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South Downs 100 mile (Autumn Event)

Name: South Downs 100 mile (Autumn Event)
Start: 2026-10-03
End: 2026-10-03
Location: Lewes

Lewes, United Kingdom • 3 Oct 2026

The South Downs 100 mile (Autumn Event) is a challenging single-loop trail race held in the scenic South Downs National Park, starting at Plumpton Racecourse in Lewes, East Sussex. Covering 100 miles with over 12,000 feet of elevation, the course features rolling hills and stunning views, supported by 12 aid stations. Runners have a 34-hour cutoff time to complete the race. The event offers free onsite camping for participants over the weekend. Additionally, the race is part of the South Downs Triple Crown challenge, launching in 2025, where runners can complete three ultra-distance races within a calendar year. Visit the organization's website for the most recent information.

United Kingdom South East (England) Lewes

Race information

Registration

100 mi

100 Mile

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Nov 29

Box Hill Vertical KM

Dorking

13 mi

Join a guided Box Hill Vertical KM group run near Dorking for a tough 12.5 mile route with about 1000 m of climb through woods, heath and open fields. Enjoy expert guidance, technical terrain and a social finish.

Friday Dec 5

Winter on the Downs

Choose from 50 km, 55 miles or 100 miles on scenic South Downs trails starting and finishing in Eastbourne. Enjoy runnable grass tracks, farm and woodland paths and be ready for variable winter weather from crisp sun to wind, rain or snow.

UTMB Index

Saturday Dec 6

Sussex Downs Trail Run

Scenic trail runs from Plumpton Racecourse across the South Downs with ridge top views to the sea. Choose 9, 12 or 22 km with chip timing, water stations and a finishers medal; plastic free event so bring a reusable cup.

Sunday Dec 7

Hurtwood 50K

Dorking

50 km

Take on the Hurtwood 50k through the Surrey Hills on 7 December 2025, a fully signed trail ultra with checkpoints and a 10 hour time limit. Entries open 12 December 2024 and the event welcomes fast walkers and first time ultra runners.

UTMB Index