Ultramarathon

Centurion Autumn 100

Four out-and-back spurs form this fast British trail 100, mixing the Thames Path and Ridgeway with darkness, damp ground and a strict 28-hour cutoff.

Next raceSaturday, October 17, 2026
RegistrationSold out
Distance categoryUltramarathon
LocationGoring-on-Thames, United Kingdom
Get alertsLast checked August 18, 2026

Quick facts

  • Four 25-mile out-and-back legs return to the same race hub.
  • Thames Path and Ridgeway trails produce a relatively fast 100-mile profile.
  • A 28-hour cutoff rewards steady pacing and efficient hub stops.
  • Qualification standards apply before runners can take the start.

Is the 2026 Centurion Autumn 100 sold out?

The 2026 Centurion Autumn 100 is sold out.

About the Centurion Autumn 100

Centurion's Autumn 100 is built around race headquarters in Goring and Streatley. Runners return to the same hub after each 25-mile spur, making pacing, crew-free planning and disciplined aid-station stops central to the race.

Course

Four separate out-and-backs use the Thames Path and Ridgeway. The profile is modest for a trail 100, but wet ground, repeated turnarounds and a long night can erase the apparent speed advantage.

Race-day weather

Mid-autumn on the Thames can bring cool temperatures, rain and wind. Mud and many hours of darkness often shape the race more than outright elevation gain.

Past Centurion Autumn 100 dates and results

YearDateStatusResults
2026Saturday, October 17, 2026Upcoming

Centurion Autumn 100 FAQ

When is the Centurion Autumn 100?

The 2026 Centurion Autumn 100 is on Saturday, October 17, 2026.

Is the 2026 Centurion Autumn 100 sold out?

The 2026 Centurion Autumn 100 is sold out. View the official registration details at centurionrunning.com.

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