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Autumn 100 2026

Goring-on-Thames, United Kingdom, 17 Oct 2026

This course is built as four out-and-back spurs from Goring and Streatley, using sections of the Thames Path and the Ridgeway to create a cross-shaped route. In dry conditions it is relatively flat and fast for a trail hundred, but runners still have to handle long stretches of darkness plus the chance of cold, wet and windy autumn weather. It is one of Centurion's established 100 mile races and is positioned as a fully marked, fully supported British trail hundred.

One distance, 158 km, up to 1,510 m of climb.

Distances

• 158 km: 158 km, 1510 m of climb, highest point 220 m, 17 Oct 2026.
  This course is built as four out-and-back spurs from Goring and Streatley, using sections of the Thames Path and the Ridgeway to create a cross-shaped route. In dry conditions it is relatively flat and fast for a trail hundred, but runners still have to handle long stretches of darkness plus the chance of cold, wet and windy autumn weather. It is one of Centurion's established 100 mile races and is positioned as a fully marked, fully supported British trail hundred.

  158 km cut-off times

  • Wallingford, 10.5 km: 10:45
  • Little Wittenham, 20.1 km: 12:30
  • Wallingford, 29.8 km: 14:15
  • Goring, 40.2 km: 16:00
  • North Stoke, 46.7 km: 17:10
  • Swyncombe, 60.4 km: 19:30
  • North Stoke, 74.0 km: 21:50
  • Goring, 80.5 km: 23:00
  • East Ilsley Down, 90.6 km: 00:45, day 2
  • Chain Hill, 100.6 km: 02:30, day 2
  • East Ilsley Down, 110.6 km: 04:15, day 2
  • Goring, 120.7 km: 06:00, day 2
  • Pangbourne, 128.6 km: 07:20, day 2
  • Reading, 140.8 km: 09:30, day 2
  • Pangbourne, 153.0 km: 11:40, day 2
  • Finish, 158.4 km: 13:00, day 2

  158 km aid stations

  • Wallingford, 10.5 km
  • Little Wittenham, 20.1 km
  • Wallingford, 29.8 km
  • Goring, 40.2 km
  • North Stoke, 46.7 km
  • Swyncombe, 60.4 km
  • North Stoke, 74.0 km
  • Goring, 80.5 km
  • East Ilsley Down, 90.6 km
  • Chain Hill, 100.6 km
  • East Ilsley Down, 110.6 km
  • Goring, 120.7 km
  • Pangbourne, 128.6 km
  • Reading, 140.8 km
  • Pangbourne, 153.0 km

  On the course: bag drop, medical, water.

  5 food and drink products on the course.

  158 km equipment

  • Back up light source, minimum 100 lumens (mandatory)
  • Cup or mug (mandatory)
  • Fully charged mobile phone including the numbers for the Race Medic and Race Director (mandatory)
  • gloves (mandatory)
  • Headtorch or primary light source, minimum 100 lumens (mandatory)
  • Long sleeved base layer or fleece top carried separately and kept dry for emergency use (mandatory)
  • Survival blanket: 1.4m x 2m minimum (mandatory)
  • Warm hat: beanie hat or buff (mandatory)
  • Water bottles or bladder capable of carrying a minimum of 1 litre (mandatory)
  • Waterproof jacket: Gore-Tex or similar, minimum 10000mm+ with sealed seams (mandatory)
  • whistle (mandatory)

Other editions

• Autumn 100 2025, 18 Oct 2025: 161K (161 km, 1184 m of climb, highest point 217 m).