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entries openCenturion Running
Thames Path 100
Centurion Running
Next edition: Saturday, 1 May 2027 – Sunday, 2 May 2027Richmond New Waterfront, Richmond upon Thames, London, England
A flat, fast 100-mile journey from Richmond to Oxford, following the Thames on predominantly groomed trail and paved path with distance and overnight pacing as the defining challenges.
Start · approximate race area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.
Location evidence
Official 2027 source explicitly Richmond New Waterfront by Old Town Hall on Thames; London locality disambiguated from Yorkshire Richmond. Uses new source refinement checked in this pass. GeoNames supplies a representative locality or named-landmark point. This is approximate event area, not exact start-line coordinates. GeoNames, CC BY 4.0; https://www.geonames.org/about.html
Location checked 2026-09-14.
Official race site (opens in a new tab)
Optional device-only history; never synced to your account. Shared-device users can leave it off.
Distance100 mi
Ascent560m
Climb / km3.5m
Cutoff30h
Cutoff pace11:11/km
Technicality2.8/10
EntryFrom £225
FormatPoint-to-point
Next edition
1 May 2027 – 2 May 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 Past edition
These facts belong to the 2026 edition only. Missing values have not been copied from another year.
- Distance
- 161 km
- Ascent
- 560m
- 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 start date, 161K distance, 560m ascent, 30-hour cutoff, £220 fee, 300-runner field and 13-aid-station headline. The end date follows the published overnight schedule.
Check Thames Path 100 2026 source (opens in a new tab)
Race For You difficulty
6.7/ 10
Hard
High input evidence · 94% evidence coverage
The main recorded demands are substantial race distance. Course difficulty and cutoff pressure describe different challenges: more approachable terrain can still require a demanding pace to beat the deadline. Neither score assesses your personal fitness, safety or readiness.
Scoring details and version
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. Evidence coverage describes the recorded inputs, not prediction accuracy or your likelihood of finishing.
Weather, conditions and individual preparation can change the real difficulty significantly.
How the score works Distance, weighted 30 percent6.8 out of 10
Climbing, weighted 25 percent1.7 out of 10
Technicality, weighted 15 percent2.8 out of 10
Accumulated burden, weighted 17 percent5.6 out of 10
Exposure & support, weighted 13 percent5.5 out of 10
Course analysis
What shapes this race
Expect largely runnable, non-technical surfaces.
trailmixednon-technical
Climbing density
3.5m 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 30h, the raw average required is 11:11 per kilometre (18:00 per mile), including every stop.
Raw pace11:11/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.
4.9/10 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 Thames Path 100, your potential buffer and the biggest change in demand.
Practical detail
Support & logistics
Aid stations13 listed
StartRichmond
FinishOxford
Support levelfully supported
LogisticsPublic transport possible
LogisticsAccommodation nearby
LogisticsBag drop
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 HighChecked 13 September 2026. Entry status: Open. The official 2027 event and entrants pages verify the 1–2 May schedule, 161K distance, 560m ascent, 30-hour cutoff, £225 affiliated fee, 300-runner field. The aid table has 12 intermediate stops while the official vital-stat headline counts 13. Other stored facts retain their previous source review from 2026-09-01. Field-scoped check 2026-10-20: 1–2 May 2027, 161 km, 560 m and 30 hours remain confirmed. Registration accepts entries; £225 UKA / £227 general. Closure 3 April 10:00 BST. Organiser says 2027 route diversions are still being assessed; no new GPX or route version inferred. Other facts retain their earlier field evidence.
- Successful source check
- 20 Oct 2026
- Catalogue record updated
- 20 Oct 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.
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