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entries openGB Ultras
Chester Ultra 100
GB Ultras 100 Mile Series
Next edition: Saturday, 17 April 2027 – Sunday, 18 April 2027Ellesmere Port, England
A marked 102-mile loop from Ellesmere Port through the Sandstone Trail, Delamere Forest, canal paths and the North Cheshire Way, supported by twelve checkpoints.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance102 mi
Ascent1,590m
Climb / km9.7m
Cutoff32h
Cutoff pace11:42/km
Technicality4.2/10
Entry£229
FormatLooped
Next edition
17 April 2027 – 18 April 2027
This is the most relevant confirmed edition currently held for the permanent race family. Edition-specific facts should still be checked against the final organiser instructions.
Edition archive
Expand an edition to inspect its year-specific facts. Other years never replace the primary edition facts.
Past editions
2026 to Completed
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 160.93 km
- Ascent
- Not verified
- Cutoff
- Not published
- Entry
- Not verified
- Format
- Not published
- Stage layout
- Not applicable
Successful source check: 1 Sept 2026Source confidence: highThe official GB Ultras volunteer calendar verifies the Chester Ultra 100 Mile 2026 date and advertised distance. Edition-specific elevation, cutoff, price, support and route facts remain unknown rather than being copied from 2027.
Check Chester Ultra 100 2026 source (opens in a new tab)
Race For You difficulty
6.8/ 10
Hard
Moderate evidence confidence · 77% evidence coverage
This score is driven most by substantial race distance. Difficulty V2's separate time-limit modifier adds 0.15 points here and is capped at 0.70; a broad limit cannot erase extreme intrinsic demand. This is independent of the public Cutoff Pressure V2 band.
Weather, conditions and individual preparation can change the real difficulty significantly.
How the score works Distance, weighted 30 percent6.9 out of 10
Climbing, weighted 25 percent3 out of 10
Technicality, weighted 15 percent4.2 out of 10
Accumulated burden, weighted 17 percent5.7 out of 10
Exposure & support, weighted 13 percent5.9 out of 10
Course analysis
What shapes this race
Expect forest trail that may change character in wet conditions, long runnable canal sections where pace discipline matters more than technical skill.
trailforestcanalmixed
Climbing density
9.7m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
Moderate pressure
To finish inside 32h, the raw average required is 11:42 per kilometre (18:49 per mile), including every stop.
Raw pace11:42/km
PressureModerate pressure
Cutoff pressure compares the published time limit with distance, ascent and verified course demands. Lower pressure does not mean the race is easy. Raw pace includes checkpoints, food stops, navigation errors and any sleep; it is not a pacing plan.
Who this suits
First ultra?
Better suited to runners with prior ultra, mountain or technical-terrain experience than to somebody choosing their first ultra.
3.8/10 suitability
Navigation
fully marked
The route is described as marked, but runners should still read the final race instructions.
Exposure & kit
extensive kit
Significant overnight running is likely for many entrants. Lighting, temperature management and sleep strategy can materially affect the outcome.
Personal race predictor
Will you make the cutoff?
Use a previous result to estimate a realistic range for Chester Ultra 100, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations12 listed
Support levelaid stations
LogisticsParking noted
LogisticsPublic transport possible
LogisticsAccommodation nearby
LogisticsBag drop
LogisticsCrew access
Logistics are only shown where currently recorded. Confirm parking, transport, crew access and final aid-station plans with the organiser.
Latest verification
Trust the source, see the gaps.
Data HighThe official page verifies the 17–18 April 2027 schedule, 102 miles, 1,590m ascent, 32-hour cutoff, £229 unaffiliated fee, 400 places, twelve checkpoints and marked route.
- Successful source check
- 1 Sept 2026
- Catalogue record updated
- 1 Sept 2026
- Official source
- Available
Official source 1 (opens in a new tab)Official source 2 (opens in a new tab)Official source 3 (opens in a new tab)
Event details can change after a successful source check. Confirm the final route, kit, cutoff, price and entry terms directly with the organiser before entering or travelling.
Found something wrong?
Help keep this race accurate.
Wrong cutoff? Date changed? New course? Tell us what moved and include the official source if you have it.
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