Saturn 7 Hour Time Challenge - Wraysbury

Event details

This is a 7 hour timed running event on 7 August 2026. Entrants may run any distance they choose during the 7 hour period. The event limit is 300 entrants and the minimum age is 12 years. Entries close on 06/08/2026. Transfers are allowed online for £2.50 up to the day before the event; a deferral to another event is available for an £18 fee. Distance pins are awarded for half-marathon, mega-half, marathon, 50 km and ultra distances. A finisher medal is awarded to anyone who completes at least 3 km. Goody bags are provided, including a vegan option.

• 3 km minimum
• 7 km lap (4.37 miles) - may change to a 3.28 mile loop
• Half marathon = 3 laps
• Marathon = 6 laps
• Ultra = 7 or more laps
• 50 km distance available

Course and facilities

The course runs along a stretch of the River Thames and is fully signed. Surfaces are mainly well made paths and tarmac with a very short grass section; road shoes are suitable. The regular course may change subject to health and safety review and land owner approval. There is an aid table and drinks at the start/finish with savoury, sweet, fruit, cheese and vegan items. Toilets and changing facilities are at the race HQ, which also has a cafe. A bag drop is available but is unmanned. Parking is available at Runnymede Pleasure Grounds (pay on exit). Headphones are allowed. Visit the organization's website for the most recent information.