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registration openLake District Running Festival / ARK Consultants UK
Grasmere 24hr Ultra
Next edition: Saturday, 5 June 2027 – Sunday, 6 June 2027Grasmere Sports Field, England
A 24-hour event on a fully waymarked 5K Grasmere loop, where solo runners and teams accumulate distance while meeting an hourly minimum-lap rule.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
DistanceVariable · 5km loop
AscentNot verified
Event window24h
EntryNot yet published
Formatfixed time · looped
Navigationfully marked
Start interval60 minutes
Next edition
5 June 2027 – 6 June 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
- Variable · 5 km loop
- Ascent
- Not verified
- Event window
- 24h
- Entry
- Not verified
- Format
- fixed time · looped
- Stage layout
- Not applicable
Successful source check: 2 Sept 2026Source confidence: medium2026 is stored as a fixed-time 24-hour event on a 5K loop, not as a fixed-distance race or true backyard. Total distance and ascent remain result-dependent, so the conventional predictor is blocked.
Check Grasmere 24hr Ultra 2026 source (opens in a new tab)
Non-standard fixed-time endurance event
Conventional metrics are not applicable.
The selected 2027 edition is a fixed-time format with no truthful fixed headline distance. Race For You records the verified objective, loop and event-window facts separately. Conventional Difficulty V2, Cutoff Pressure V2, cutoff pace and personal-finish calculations are unavailable because they would require fake inputs.
This format is intentionally not converted into a normal 50K, 100K or 100-mile comparison. Its event window is not relabelled as a conventional cutoff. Check the organiser before entering, travelling or using these details for training decisions. An older edition may appear in the archive, but its course facts are not silently carried into this one.
Verification
What we know today.
- Successful source check
- 2 Sept 2026
- Catalogue record updated
- 2 Sept 2026
- Source confidence
- high
- Official source
- Available
How the format works
A real objective, not a fake distance.
Accumulate distance for 24 hours; complete at least one 5K lap in every hour to remain in the event. Additional laps within each hour are allowed.
Source transparency
Verify the final event detail.
2027 is stored as a fixed-time 24-hour event on a 5K loop, not as a fixed-distance race or true backyard. Total distance and ascent remain result-dependent, so the conventional predictor is blocked.
Spot a format change?
Help keep this race accurate.
If the organiser changes the objective, loop, event window, category pricing or support model, prepare a device-only correction draft with the official source.
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Browse compatible formats
Use the catalogue's explicit format and evidence filters. Variable-total events are not converted into conventional distances.