Phoenix Running - Walton-on-Thames

SEP
27
2026
Enjoy a flat riverside run along the Thames with a chocolate themed aid station. Choose your own distance from 5km to ultra marathon within a flexible seven hour time limit.
Marathon Half Marathon 10 kilometers 5 kilometers

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Event Overview

The Chocothon is a timed running event held in Walton-on-Thames along the River Thames. The course follows a 5.3 km (3.28 mile) out-and-back route on the riverside towpath. This off-road trail is flat with no elevation gain or loss, providing a fast surface for participants. The event features a flexible "rock up and run" start system within a one-hour window.

Distance Options

Participants can choose to complete as many or as few laps as they wish within a seven-hour time limit. Available distances based on lap counts include:

  • 5 km
  • 10 km
  • Half Marathon
  • Marathon
  • Ultra Marathon

The minimum distance required to be considered a finisher is one lap of 3.28 miles.

Course Records and Support

The event includes an aid station stocked with chocolate for all participants. Results are published on the same day, and runners have access to digital bibs, athlete profiles, and digital finishers' certificates.

Registration options include standard entry, which comes with a bespoke finishers' medal, or a lower-cost entry option that excludes the physical medal while maintaining access to all other event support and services. The event is open to all abilities, with specific distance restrictions applicable to participants aged 20 or under according to UK Athletics rules. Visit the organization's website for the most recent information.

Marathon
Marathon
Half Marathon
Half Marathon
10 km
10k
5 km
Minimum Distance / Lap
5 km
7 Hour Timed Event
Ultra
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