United Kingdom · England
Autumn 100
Distance
161 km
Date
October 17, 2026
Entry fee
220 GBP
€ / km
€1.57
UK fall classic: fast, runnable 100-mile trails with crisp weather and elite-level organization.
Elevation and Terrain
Total Meters
1500m
D+/KM
9.32m/km
For context, the Tor des Géants 330 loop has 73 D+/km.
Avg Uphill Gradient
4.6%
Avg Downhill Gradient
-4.6%
Uphill gradient distribution
Route Profile
Analysed 2026-05-01Terrain breakdown
Terrain
Climbs
Top climbs
3.9 km · 130 m gain
starts km 53 · avg 3.4% · max 18.3%
1.8 km · 88 m gain
starts km 84 · avg 4.9% · max 9.7%
1.0 km · 59 m gain
starts km 61 · avg 6.2% · max 25.6%
Top descents
3.8 km · 130 m drop
starts km 64 · avg -3.4% · max -18.3%
2.1 km · 91 m drop
starts km 115 · avg -4.3% · max -9.2%
1.0 km · 59 m drop
starts km 59 · avg -6.0% · max -25.4%
Race files
Logistics
Nearest airport
London Heathrow (LHR)
Notes
Start: ~1–1.5 hrs / Public transport: Good (train to Goring and Streatley) / Accommodation: Easy (Oxford/Reading area)
