Goring-on-Thames, Oxfordshire, England, United Kingdom · Saturday, October 16, 2027

100 mi

Centurion Autumn 100

379 days away

161 km Distance

1,500 m Climbing

10.0 Grit · Elite / extreme

51.5222° N, 1.1255° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 9 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.

Time limit 28 hours 10:26 min/km average. Tight. Room to walk the climbs and stop at aid. Tighter than 82% of 100 mi races. Measured against 41 races of the same distance. Cut-off calculator →

Typical conditions, October

Daylight 10 h 43 m of light

Course notes

terrain This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 161 km of trail with 1,500 m of ascent.

Trail Running Shoes 161 km of trail — cushioning that is still there in the last quarter.
Race Nutrition Past 161 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Flask capacity for 161 km, without the bounce.
Headlamps A 28 h limit puts you out there after dark.
Accessories Chafe and blisters end more 161 km races than fitness does.

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Maurten