Info: New entries for this event closed on Thursday 15th October 2026.

| Marathon (per person) | £49.99 | |
| Half Marathon (per person) | £29.99 | |
| 50 Mile Ultra (per person) | £79.99 | |
| 50 Mile Pair Relay: 26 miles + 24 miles (per team) | £99.99 | |
| 50 Mile Trio Relay: 10 miles + 16 miles + 24 miles (per team) | £119.99 | |
| 100 Mile Ultra (per person) | £124.99 | |
Half Marathon Student Discounted Entry - £24.99 |
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For the marathon or ultras, register from 8:00am and start your journey at 9:00am and follow the Fens Way on a flat and fast journey of resilience and discovery. If that sounds too early, register by 10:00 and start at 11:00 on the Half Marathon!
The inaugural CamLynn (Cambridge to Kings Lynn) Ultra , with Half Marathon/Marathon/Relay options is designed by experienced trail and Ultra runners who care about inclusivity, safety and adventure.
This event comes with full GPS tracking (except for the Half-Marathon), maps and GPX files, race bibs, first aid cover, generous aid stations and a welcoming community party vibe - You will be fully supported every step of the way!
Choose the half marathon from Milton to Ely, the marathon from Cambridge to the 1st Ely Scouts Hut, or push on in the main event for the full 50 miles to a track finish at Kings Lynn Lynnsport.
With a 6.5hr marathon cut off and a 14hr 50 mile cut off, the event is open to brisk walkers, charity runners and first timers – as well as experienced ultra athletes looking for a cracking time!
Go solo, or in a relay as a duo (26 miles +24 miles) or trio (10 miles+16 miles +24miles), or take on our 100 mile option (with a 32hr cut off and varied mixed terrain).
Bag drop, and option to send your own drink to the final aid station, free photos, medal and your country’s flag and lots of cheer (& a drink 😉) waiting for you at the finish!
Optional Extras – Event T Shirt / Coach Transfer to Start from Kings Lynn or Ely: Booking details and prices tbc.
We would like to thank the 1st Ely Scouts, Decathlon and Lynnsport for their support .
Early entries appreciated! Spread the word!
View the Event Disclaimer / Terms and Conditions.
View the Event Cancellation / Refund Policy.
This event offers the option to purchase XCover, so that participants may be able to get a refund if they are unable to attend due to unforeseen circumstances.