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Brighton to London Ultramarathon

April 26th 2025

A classic race between the two cities

Classic footraces between the Capital and Brighton have taken place since 1837.  There is a rich history of many events and challenges, mainly as a road race, right up to 2005 when it was determined that a road race was no longer a viable option due to traffic concerns.

In 2024 and Cockbain Events and Beyond Marathon revived the pairing of the cities, as a trail race.  In a twist to the original, going in the reverse direction.

The 2024 event was very well received, sold out quickly and throughly enjoyed by all.  [NEW] We have made a change for the 2025 route, an alternative section to cross the dam at Ardingly Reservoir for a more picturesque route and  faster travel.  Apart from that the route remains with same. It uses a combination or major trails like the South Downs Way, Sussex Border Path and London Loop, and a few quiet sections of country lane. We have also increased capacity to 200 in response to the sell-out event in 2024.

We have an early start to the race to enable most of the participants to finish in time to be able to use rail links to get home to most of the country and not necessarily have to stay in London, unless you are making a weekend of it with the family of course!

The route has an overall cut-off time of 18.5 hours. Optional, graded medals for; Finisher, sub-14 and sub-12 hours.

Registration and Start

Kemptown Brighton, BN2 1PR. 600m walk to Brighton Pier for an iconic start location


London, Thames-side.  Kingston-upon-Thames/Teddington

Capacity (Increased capacity in 2025 due to sell out in 2024)

200  race places total. 


Distance - 101.4km  | Elevation + 1566m. 82% trail and 18% road

Download 2024 Event Guidebook

The Route

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The Schedule


Registration for April 26th 2025 

  • £90 (this now includes the 5% SiEntries ticket sales website booking fee, so is the same cost as 2024)

  • In-line with our environmental policy, an optional medal can be purchased when booking for £7.80. Medals are graded

    • Bronze - Finisher

    • Silver - Sub 14 hours

    • Gold - Sub 12 hours


Your booking also includes:

  • Small (30l) Bag transport from start to the finish

  • Hire of a GPS Tracker from Track Trail ® 

  • Electronic RFID chip RaceResult system operated by Beyond Marathon Ltd

  • Trophies for Female and Male 1st, 2nd, 3rd

  • Selection of food and drink at CP’s and the finish

  • Finisher's PDF certificate can be downloaded from the event results page

  • Experienced race directors of over 100 races

  • Medical support


Refund Policy and Rules

  • Up to 7-days before the event, you can transfer your place to person that you find yourself. Transfer using entry website transfer function. Once the recipient pays, you will be refunded. Merchandise and booking fees are not refunded by the booking system but merchadise is transferred to the recipient. Remember to include in your private sale the merchandise costs, but note that sizes cannot be changed. Whatever you originally ordered will be given to the new recipient at the finish.

  • No refunds unless the event is cancelled

  • No deferrals

  • Hiking poles not permitted (If you have a mobility/medical reason contact us)

  • Pacers not permitted

  • Guide runners are welcomed

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