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date confirmedCenturion Running
North Downs Way 100
Centurion Running
Next edition: Saturday, 7 August 2027 – Sunday, 8 August 2027Farnham to Ashford, England
A 103-mile marked point-to-point race from Farnham to Ashford on the North Downs Way, with varied woodland trail, 3,350 metres of climbing and a full night on course for much of the field.
Official race site (opens in a new tab)
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Distance103.8 mi
Ascent3,350m
Climb / km20.1m
Cutoff30h
Cutoff pace10:47/km
Technicality6.1/10
Entry£220
FormatPoint-to-point
Next edition
7 August 2027 – 8 August 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
- 167 km
- Ascent
- 3,350m
- Cutoff
- 30h
- Entry
- £220
- Format
- continuous · single stage · point to point
- Stage layout
- Not applicable
Successful source check: 1 Sept 2026Source confidence: highThe official completed-edition page verifies the 2026 date, 167K route, 3,350m ascent, 30-hour cutoff, £220 fee, 250-runner field and twelve aid stations.
Check North Downs Way 100 2026 source (opens in a new tab)
Race For You difficulty
7/ 10
Very hard
High evidence confidence · 94% evidence coverage
This score is driven most by substantial race distance, technical terrain. Difficulty V2's separate time-limit modifier adds 0.35 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 percent4.8 out of 10
Technicality, weighted 15 percent6.1 out of 10
Accumulated burden, weighted 17 percent5.7 out of 10
Exposure & support, weighted 13 percent5.5 out of 10
Course analysis
What shapes this race
Expect forest trail that may change character in wet conditions.
trailforestmixed
Climbing density
20.1m per km
A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.
Cutoff analysis
Very high pressure
To finish inside 30h, the raw average required is 10:47 per kilometre (17:20 per mile), including every stop.
Raw pace10:47/km
PressureVery high 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.
3.1/10 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 North Downs Way 100, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations12 listed
StartFarnham
FinishAshford
Support levelfully supported
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 2027 page verifies the 7–8 August schedule, 167K distance, 3,350m ascent, 30-hour cutoff, £220 affiliated fee, 250-runner field and twelve aid stations. Entry opens on 6 September 2026, so it is intentionally not marked open on this 1 September check.
- Successful source check
- 1 Sept 2026
- Catalogue record updated
- 1 Sept 2026
- Official source
- Available
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?
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