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Rat Race 100 ultramarathon

Bamburgh Castle to Edinburgh Castle

The Rat Race 100 Series is the UK’s most inclusive and accessible 100-mile ultramarathon series, built for people who never thought they could complete a 100 miler. Whether you choose to run, walk or mix the two, our three fully supported 100-mile endurance events are designed to help everyday adventurers achieve an extraordinary bucket-list finish line. With no qualifying times, walker-friendly cut-offs, fully waymarked routes, stocked pit stops and unmatched on-course support, this is ultra running without barriers. 

Journey between some of the UK’s most iconic castles and historic landscapes as each event delivers a spectacular point-to-point adventure packed with unforgettable scenery and inspiring finish lines.

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Essential InfoEnter

Dates

4 - 6 July 2026 (sold out)

3 - 5 July 2027

Duration

48 hours

Distance

100 miles (160km)

Event Type

Mass Participation Events

Highlights

Buckle

Earn your Trilogy buckle if you do all 3

The Rat Race 100 is a unique three-part 100-mile ultramarathon series where each edition picks up exactly where the last one finished, creating an epic continuous journey. Complete all three over three years, or tackle them all in a single year if you’re feeling ambitious, to earn the prestigious Rat Race Trilogy Finisher buckle.

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No barriers to entry

With no qualifying times needed, a walker friendly 2.5mph completion pace, fully waymarked routes, fully supported in event logistics and fully stocked pit stops. The Rat Race team are here to help you go the distance and support you to this bucket list finish line, no matter your pace or background.

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Highest completion rate in the UK

In our inaugural 100 miler we’re proud to have achieved the highest completion rate for this distance in the UK. 65% of the field claimed this glorious medal at the foot of Edinburgh castle. We're looking to beat that in 2026!

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Generous completion window

We believe in making big adventures accessible. That’s why this route is waymarked, fully supported, and set at a pace that allows everyone to take part. There are no strict cut-offs and you have 48 hours to cross the finish line.

Itinerary

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Friday: Registration Day

The adventure begins! You will need to attend Registration on Friday at Bamburgh to complete tracker collection. This is at the Pavilion by the castle and Registration is open from 1200 - 2000. 

Rat Race 100

Saturday: Rat Race 100 begins

It's time to run or walk 100 miles!

Bag drop opens at 0530 in the Links Car Park. 

The start is at 0700 at Bamburgh Castle, please follow our signage to get to the start. 

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Sunday: Keep going Rat Racers!

Our course is open until 0700 on Monday morning and hundred of Rat Racers will be making their way towards Edinburgh Castle! 

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Monday: Rat Race 100 finishes

We will welcome our incredible final Rat Racers over the line in the morning and celebrate everyone's amazing achievements over the weekend! 

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Shetland Ultra_2

Your Adventure Leader

James

Our multi-lingual running machine, James brings extensive sports event experience, having delivered events of all shapes and sizes across the industry. A UK Athletics qualified running coach and author of the Rat Race 100 training plans, he combines expert endurance expertise with a sharp eye for route design, logistics and participant experience. James has a knack for crafting running routes you’ll genuinely love, always seeking out the very best trails, roads and hidden gems in every destination to create unforgettable adventure experiences.

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Raise £750 and get your entry fee refunded

Find out more

FAQs

What kit do I need?

Some of the kit listed is to help you have a safe experience and have the best chance of finishing the ultramarathon. Some of this kit is to ensure that if you are unable to continue without our assistance then we can be confident of you having the level of equipment required to keep you as comfortable as possible whilst you wait for that assistance. Spot checks are carried out throughout the event and you will not be able to continue if you are found not to be carrying the requisite items.

View mandatory and recommended kit

 

Do you have a training plan?

James, our resident running coach, has designed 3 training plans for the Rat Race 100. They are split into 4 x 6 week blocks so you can work through them. They are also categorised by 3 different pace goals, so choose the one that best aligns with the finish time you are shooting for.

Sub 24

Sub 24 Part 1

Sub 24 Part 2

Sub 24 Part 3

Sub 24 Part 4

Sub 30

Sub 30 Part 1

Sub 30 Part 2

Sub 30 Part 3

Sub 30 Part 4

Sub 48

Sub 48 Part 1

Sub 48 Part 2

Sub 48 Part 3

Sub 48 Part 4

Are there cut offs?

Yes, there are cut-offs on the event after the 60 mile mark, but these are generous and designed for a 2.5mph moving pace.

  • PS1 - No enforced cut off
  • PS2 - No enforced cut off
  • PS3 - No enforced cut off
  • PS4 - No enforced cut off
  • PS5 - No enforced cut off
  • PS6 - 60 miles 12:00 Sunday
  • PS7 - 74 miles 18:25 Sunday
  • PS8 - 83 miles 22:45 Sunday
  • PS9 - 93 miles 03:30 Monday

 

Is the route likely to change?

It is worth knowing that the course may change if we deem it prudent for your safety or for other operational or weather-based reasons, and we must always reserve the right to do so. Please always follow our arrows and signage over any gpx files you may download.

Can I see the route?

You can view the GPX route online. Please note this is subject to last minute changed so always follow the waymarking on the day. 

Download the GPX file

 

How old do I need to be?

Rat Race require you to be over 18 on the day of Registration for this adventure.

What bags will you move for me?

We will move up to 5 bags for you at the Rat Race 100. You will drop all of these with us on the Saturday morning at the start line.

If you have a support team they can bring your bags to you if you prefer, they can also take them from you when you are finished with them. You do not have to use this service but it's there if you need it. Note: supporters cannot access Pit Stop 4 so if you want to use the Dowlaw drop bag option you will need to leave that with us at bag drop.

IMPORTANT: Your drop bags/contents MUST be waterproofed as they will be exposed to the elements at various stages during their transport. Your bag labels will be provided in your adventure pack.  

BAGS WE WILL TRANSPORT:

1) Eyemouth Drop Bag (PS3 – 33 miles) up to 5kg and 15L 

This bag is intended as a small resupply bag of your nutrition or a spare pair of socks etc. This comes before the most technical and difficult section of the route as you go over St Abb’s head – if it’s wet you might appreciate new socks in your pack to put on! We would recommend a dry bag of about 10L as an easily transportable option. 

​After you have finished with this bag we will transport it to the finish for you. 

2) Dunbar Drop Bag (PS6 – 60 miles) up to 5kg and 15L 

Recommended items for here would be spare clothes, a change of shoes as the route from here is predominantly road, spare socks, toothbrush and toothpaste, a top up of snacks and nutrition.  

After you have finished with this bag we will transport it to the finish for you. 

If you want to sleep at this stop, please see 'Sleep Station Bag' section. You are permitted 25L and 10kg.

3) North Berwick Drop Bag (PS7 – 74 miles) up to 5kg and 15L 

Recommended items for here would be spare clothes, toothbrush and toothpaste, a top up of snacks and nutrition.

After you have finished with this bag we will transport it to the finish for you. 

If you want to sleep at this stop, please see 'Sleep Station Bag' section. You are permitted 25L and 10kg

​ 

4) Aberlady Drop Bag (PS8 – 83 miles) up to 5kg and 15L 

Recommended items for this bag would be spare clothes, spare socks, a top up of snacks and nutrition. Maybe something to help push you through this last section!  

After you have finished with this bag we will transport it to the finish for you. 

If you want to sleep at this stop, please see 'Sleep Station Bag' section. You are permitted 25L and 10kg.

​ 

5) Finish line bag up to 15kg and 70L 

We ask that these are duffel style vs hard suitcases. This will go straight to the finish from the start and it will be waiting for you in Edinburgh. 

Supporters may bring you additional items to the Pit Stops. 

What is a sleep station bag?

SLEEP STATION BAG GUIDANCE

​You will choose in advance your designated sleep station, the options are: 

  • Pit Stop 6: 60 miles 

  • Pit Stop 7: 73 miles 

  • Pit Stop 8: 82 miles 

All of these pitstops have a standard dedicated drop bag logistic to them anyway (5kg and 15l), however, if you wish to sleep at one of these, you are permitted an increased allowance of up to 25L and 10kg to accommodate your sleep kit.

Please note you cannot change your sleep station once you have dropped your bag off with us at the start. It cannot be transported to another location. This bag will only be transported onwards to the finish. 

You are not obliged to sleep. If you do plan to sleep, we would recommend a power nap of no longer than 90 minutes - 3 hours max.  ​

If you do plan to sleep. the additional kit you would need to add to your pitstop bag should be no more than:  

  • Sleeping bag 

  • Small pillow 

  • Rollmat ​ 

  • Eye mask & Earplugs ​​

SLEEP STATIONS - WHAT TO EXPECT

​​​Sleep station facilities will be in the same room as the pitstop, this will be a warm room where you can find space in the sleep area to set up and get some shut eye. Please bring earplugs as there will be other participants and crew in and out of this pitstop. There are no beds provided so we recommend a good roll mat or thermarest style inflatable mat for comfort but it is personal choice. 

When utilising pitstop facilities at a pitstop that also has a sleep station, please be mindful of those sleeping and keep noise to a minimum where possible, 

What is at the Pit Stops?

The Pit Stops are the points where you can grab a snack, interact with the Rat Race team and also your own supporters if you have them. Our Pit Stops have a few staples that you'll see at all stations and also some which are bespoke to that Pit Stop location.​Standard provisions include:

  • Water

  • Juice

  • Sweet snacks

  • Salty snacks

  • Fruit

  • Toilets

  • Medical team

Our Pit Stops are well stocked but they do not contain any sports nutrition products as we know you will have your own that you have trained with. The last thing you want to do in an ultra is try an untested gel and suffer the consequences! You should plan to bring your own supplements and be self contained when it comes to gels/electrolyte tablets.​

We aim to cater to a wide variety of dietary needs, every Pit Stop will have options for vegetarians and vegans, plus we have a box of gluten free/dairy free snacks for those with intolerances that are kept separate please ask our staff for more info when you arrive. While every effort is made to keep these snacks separate we cannot guarantee there is no cross contamination from allergens such as gluten/peanuts due to the nature of the Pit Stop during a live event.

ENHANCED Pit Stops will have all of the services available at the SIMPLE Pit Stops but they will have enhanced food offerings which will vary by location. Examples of enhanced food selections include porridge pots, noodles, soup, hot catered food, sandwiches, pizza, sausage rolls etc to help keep you fuelled on this adventure.

 

PIT STOP 1 / FENHAM 

Pitstop classification: Simple

Distance: 10 miles 

Postcode: TD15 2PL 

Distance to next Pit Stop: 12 miles 

STRICTLY NO SUPPORTERS HERE 

PIT STOP 2 / BERWICK VENUE TBC

Pitstop classification: Enhanced

Distance: 22 miles 

Postcode: TBC

Distance to next Pit Stop: 11 miles 

PIT STOP 3 / EYEMOUTH COMMUNITY CENTRE 

Pitstop classification: Enhanced

Distance: 33 miles 

Postcode: TD14 5DE 

​Distance to next Pit Stop: 10 miles 

PIT STOP 4 / DOWLAW FARM SIMPLE  

Pitstop classification: Simple

Distance: 43 miles 

Distance to next Pit Stop: 5 miles 

STRICTLY NO SUPPORTERS HERE 

PIT STOP 5 / COCKBURNSPATH VILLAGE HALL

Pitstop classification: Enhanced

Distance: 48 miles 

Postcode: TD13 5XY 

Distance to next Pit Stop: 12 miles 

STRICTLY NO SUPPORTERS HERE 

PIT STOP 6 / DUNBAR LEISURE CENTRE HOT FOOD CATERING 

Pitstop classification: Enhanced

Distance: 60 miles 

Postcode: EH42 1EU 

Distance to next Pit Stop: 14 miles 

​​PIT STOP 7 / NORTH BERWICK PAVILION

Pitstop classification: Enhanced

Distance: 74 miles 

Postcode: EH39 4DG

Distance to next Pit Stop: 9 miles 

 

​​PIT STOP 8 / ABERLADY VILLAGE HALL 

Pitstop classification: Enhanced

Distance: 83 miles 

Postcode: EH32 0RA 

Distance to next Pit Stop: 10 miles 

PIT STOP 9 / THE FISHERROW CENTRE,  MUSSELBURGH

Pitstop classification: Simple

Distance: 93 miles 

Postcode: EH21 6AT

Distance to the FINISH: 7 miles 

Can I transfer my entry?

If you find yourself unable to join us on the start line of this event, you are able to transfer your entry into an event credit voucher once for use on a new entry into an event of your choice. Transfers must be requested within the qualifying transfer window to be accepted and processed. Credit vouchers are valid for 12 months from the date of issue. Credit vouchers are exempt from the transfer process. To find out more information and how to submit a request, view of full transfer policy HERE 

How do I get a Trilogy buckle?

You can earn the epic Trilogy buckle by completing all 3 Rat Race 100 ultras. You can complete these in any order over a period of 3 years. 

What is the best way to get there?

HOW TO GET TO THE EVENT 

If you are completing this event without a support team the best way to travel to this event is in a car and parking it in our car park at Bamburgh and using our post-event bus service back to the car park. It is not a location easily reached by public transport. If you are an international participant, we strongly recommend hiring a car from the airport and driving to the event and utilising this service. You can book your parking and bus ticket in your Rat Race account.

Can my supporters join me?

We understand that you may have people attending the event who wish to support you throughout your adventure. A support team is not necessary to take part in the Rat Race 100 but for those who are using a support team here are the rules and guidelines of how you can interact with them below. 

  • Supporters and any planned support runners must be self-contained in their own vehicle, and you cannot have more than one designated support vehicle. You must pick up a pass at Registration for your support vehicle so our crew can identify you during the event, this does not gain you any privileges but allows our team to understand that you are a support vehicle. 

  • Supporters cannot access event resources such as Pit Stop food, medics, toilets, sleep stations for their own use. 

  • Supporters may not access Pit Stop 1, 4 and 5 due to limited vehicle access. They can interact with you at all other Pit Stop locations.  

  • Support runners may join you from PS6 and run with you as much as you require until the finish area in Princes Street Gardens. Once you enter the finish area support runners will be directed to the spectator area of the finish line to allow runners to run the final 100m alone.

  • ​ Support runners must join and leave the course at Pit Stop locations only. 

  • Support runners should plan to carry the mandatory kit, especially if they are running through the night.  

  • Support runners should be confident, self-supported and not rely on any Rat Race event medics, food, water or resources. Any attempt to access event resources will be denied by staff, our focus must remain on the paying participants, and we will not divert any resources to assisting support runners. If a support runner needs assistance or picking up they MUST rely on their support team to pick them up, they will not be able to access the sweeper bus service. 

  • You may only have one support runner with you at any time on the course. We have permissions in place for a certain number of runners on the route with local authorities and we cannot exceed this. 

  • Supporters must avoid driving the route where possible, they should use main roads, in particular the A1, that runs alongside to move between Pit Stop locations. 

  • Parking advice: There is no parking available at PS2 and PS3, so please park appropriately nearby and walk to the Pit Stop. PS6 there is a leisure centre car park, if this is full please park appropriately nearby and walk in. PS7 parking is available. PS8 there is no parking available at the Pit Stop please park appropriately nearby in the village being considerate of residents and driveways. PS9 parking info tbc. 

Can I volunteer?

You can view our current volunteer positions for Rat Race 100 here. You can earn Rat Race Event Credit to use on a future event entry or you can rope your supporters into volunteer while you're on the course! Volunteer credit vouchers can be gifted to others.

Where is Registration?

Registration and tracker collection is on the Friday 1200 - 2000 at Bamburgh Pavilion, NE69 7DB. You cannot collect your tracker on Saturday morning. 

Can I fundraise for charity?

You are very welcome to fundraise for any charity close to your heart while taking part in the event. Please note, however, that our Charity Refund Offer applies exclusively to participants fundraising for Children with Cancer UK.

How do I enter?

Click 'Enter' and sign into your Rat Race account and follow the sign up procedure. If you need any assistance please drop the customer service team an email on events@ratrace.com

What is Refund Protect?

Add Refund Protect to your booking during purchase and receive a full refund of your entry fee if you are unable to attend the event due to a qualifying unforeseen circumstance. PLEASE NOTE this protection is with our 3rd party partner Refund Protect and NOT Rat Race. In the event you make a refund application this is administered by the Refund Protect customer service team, Rat Race are not privy to the application and cannot intervene on your behalf to influence the outcome determined by their team.

To add Refund Protect (administered by a 3rd party) to your Rat Race booking simply select this option when presented during the entry process. Refund Protect cannot be added retrospectively. Rat Race will then send you name and booking details to Refund Protect in order to protect your transaction with them. If you opt to pay in instalments and transfer your entry before the entry cost is full paid you will be liable to ensure the cost of Refund Protect has been fully covered. This total amount will be deducted from any Rat Race credit due through the transfer process or you will be invoiced by Rat Race for the outstanding amount as Rat Race have paid this on your behalf to Refund Protect at point of entry. 

What is the difference between the 3 events?

The Rat Race 100 Trilogy

We have designed a unique trilogy format which allows you to experience each 100 miler in an unbroken journey, the next one starts where the previous one finishes. Each event has it's own personality and we recommend watching the Test Pilot videos to get a feel for each course. 

Bamburgh Castle to Edinburgh Castle - The Original One

This is the first in the series and the route that spawned the Trilogy idea, it is a stunning coastal run that follows the Northumberland coast line up to Edinburgh, it's beautiful and a great mix of trail in the first half before becoming more urban as you wind your way towards the city centre. 

Edinburgh Castle to Glamis Castle - The Fast One

This is the flattest course with a bigger ratio of road vs trail, this is good for people who maybe can't train on hills (although there is a big one at the end!) or people who are keen to push for a 100 miler PB. It is primarily urban as we work our way out of Edinburgh with lots of local facilities to take advantage of in the first half of the course. Glamis Castle is arguably the best finish line experience of any event, with a dramatic 1 mile long driveway where you can see the finish getting closer.

Glamis Castle to Stirling Castle - The Hard One

If you know Scotland the title will come as no surprise, the route here is much more remote as we skirt the Cairngorms and surrounding hills in this spectacular finale. If you've done them in order you've built up to this one, with over 1000m more elevation in the course than Bamburgh to Edinburgh it's the perfect step up to test you that little bit more. Still achievable for walkers though.

Do all 3 over 3 years (or less!) to get the Trilogy Buckle!

Pricing

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We’ve created a flexible, interest-free* instalment plan so you can choose how many months to spread the cost of your adventure. Choose to pay in full or in equal monthly instalments up to 3 months before your event date.

​* Once you sign up, Rat Race will set up a recurring monthly payment via Stripe. If a payment fails, you’ll receive reminders from Stripe and our team. After three failed contact attempts and no payment, your entry will be cancelled with no refund or transfer eligibility.

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