Chester Ultra 100 Mile

APR
17-18
2027
A 102 mile trail ultramarathon around Chester with 1590 m ascent, 12 supported checkpoints, mandatory kit requirements and a 32 hour overall cut off.
ITRA 5 102 miles

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Chester Ultra 100 Mile

The Chester Ultra 100 is a 102 miles trail ultramarathon around Chester with approximately 1590 m of ascent and 400 race places. The route links local trails and paths including Chester city loops, Beeston Castle, Delamere Forest, the Sandstone Trail, Frodsham, Warrington, Helsby Hill and canal towpaths such as the Bridgewater Canal. The event is supported by GB Ultras at 12 checkpoints along the course and is licensed by the Trail Running Association and held under UK Athletics rules. It also awards ITRA and UTMB mountain performance index points.

Entry fees are quoted at £229 for unaffiliated runners and £227 for affiliated club members, with a small affiliated discount applied at checkout. The event enforces a 32 hour overall cut off and strict checkpoint cut offs.

Mandatory kit must be carried at all times and includes items such as a waterproof coat with sealed seams, a long sleeved base layer, at least 1 litre water capacity, a charged mobile phone in waterproof protection, a survival or thermal bag, a primary headtorch of minimum 75 lumens plus a secondary light, a whistle and the GPS tracker supplied by the organiser. Dropbags are permitted at the halfway location and again later on the same site; one labelled bag only, maximum 56 x 45 x 25 cm and 7 kg.

Supporter and crew access is limited at several checkpoints and some locations are event team only. One pacer is allowed from the halfway point; pacers must be self sufficient and carry mandatory kit except for the race tracker. Live online GPS tracking is provided via GB Race Tracker with an SOS function on each tracker. Visit the organization's website for the most recent information.

Events nearby

MoRunning at Croxteth Park offers chip timed 1.5 km, 5 km, 10 km and half marathon distances while raising funds and awareness for Movember.
Trail races of 10K, 21K and 42K through Delamere Forest with marked routes, aid stations, chip timing and a finisher medal.
A trail half marathon at Loggerheads Country Park with solo and teams of three relay options, varied terrain and feed stations each 7 km lap.
Cross country meeting at Sefton Park on 28 November 2026 with multiple age-category races, European trials and prize money for senior and U20 fields.
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