River Thames Run
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Event overview
RIVER THAMES RUN takes place on 31 December 2025 at Wraysbury Skiff and Punting Club, Riverside, Egham TW20 0AA. The event is a 6-hour timed challenge on a flat, multi-terrain course and has a maximum of 100 entrants. It is licensed by the TRA and run under UKA Athletics rules.
Course and distances
The route is an out-and-back course of 3.28 miles along the River Thames. A 5k option uses an earlier turn point; the 10k is two laps of the 5k course. The 6-hour challenge allows participants to run distances from 5k up to ultra marathon. Participants may start a final lap up to 5:59:59 hours into the event.
- 5k : earlier turn point; open to entrants aged 12 and over.
- 10k : two 5k laps; open to entrants aged 16 and over.
- Half marathon
- Marathon
- Ultra marathon
- 6 hours timed entry
Prices vary by distance, with listed fees ranging from £16–£35 depending on the entry category.
Facilities and rules
Toilets and changing facilities are available at the rowing club. There is no official bag drop; bags may be left next to the start/finish line but are unmanned and left at participants' own risk. Parking is available at Runnymede Pleasure Grounds for a fee. An aid table is provided at the end of each lap offering water, squash, fizzy drinks and a variety of foods.
Maximum permitted distances under the event rules: 12-13 years: 5,000m; 14-15 years: 6,000m; 16 years: 10,000m; 17 years: 25,000m; 18-19 years: 45,000m; 20+ years: no maximum. Visit the organization's website for the most recent information.
