When is the Thames Path 100 2027?

The Thames Path 100 is on Saturday, 1 May 2027, with the start at 09:00 local time.

How hilly is the Thames Path 100?

The course has 560 m of climbing and 505 m of descent. We rate it very hilly. It is a point to point course on trail.

What is the weather usually like at the Thames Path 100?

Around the race date in 2016–2025, the temperature at the 09:00 start averaged 12°C, rising to about 15°C during the race, with 61% humidity. It rained on about 21% of those days.

How do you get a place in the Thames Path 100?

Entry is first come, first served. The standard entry fee is about $300. Check the official site for the current registration dates.

What is the cut-off time for the Thames Path 100?

Runners have 30 hours to finish.

161 kmTrail🇬🇧 London, United Kingdom

Thames Path 100

Saturday, 1 May 2027In 6 months · Start 09:00

Official site Hotels & flights

Course recordsMen 13:43:42 · Richard McDowell (2021)Women 16:00:09 · Samantha Amend (2016)

A flat, fast 100 miles upstream along the Thames from Richmond in south-west London past riverside towns and meadows to the centre of Oxford, mostly on groomed towpath and trail.

The Thames Path 100 is a trail 161 km ultra in London, United Kingdom, on Saturday, 1 May 2027, starting at 09:00. The point to point course has 560 m of elevation gain (very hilly), and the start temperature on race day has averaged 12°C in recent years. Entry is first come, first served, and the standard fee is about $300. The cut-off is 30 hours.

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Facts checked 31 Oct 2026 against centurionrunning.com.

Elevation gain

560 m

Very hilly · ↓ 505 m

Start altitude

6 m

above sea level, from terrain data

Temp at start

12°C

Peaks around 15°C

Entry fee

≈ $300

Open entry

Finishers

—

typical year

Course

Point to point

30h cut-off

Getting thereFly into LHR (London), about 11 km from the start

Plan your trip to London

Race weekends book up early. Searches are set for the race dates.

Photo: Ilya Grigorik · CC BY-SA 3.0

Hotels near the start lineFri 30 Apr – Sun 2 May · 2 nights · closest to the start firstSee hotels on Booking.com Flights to LondonArrive Thu 29 Apr, fly home Mon 3 MaySee flights on Google Flights

Things to do in LondonKlook Mobile data in United KingdomAiralo Airport transfer from LHRKiwitaxi Rent a carEconomybookings

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Thames Path 100 course map

A detailed route is not available for this race yet. The marker shows the race location.

Thames Path 100 elevation profile

Very hilly: about 560 m of climbing and 505 m of descent. A detailed profile isn’t available for this race yet.

Thames Path 100 race-day weather

At start

12°C

Peak during race

15°C

Humidity

61%

Chance of rain

21%

Wind

14 km/h

1 May in past years

Historical averages for 1 May ±3 days, 2016–2025, from 09:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Thames Path 100 finish times by age group

No data yet. We’re collecting age-group results race by race.

Course records

Men: 13:43:42 · Richard McDowell (2021)
Women: 16:00:09 · Samantha Amend (2016)

As of the 2025 season.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Thames Path 100: questions and answers

When is the Thames Path 100 2027?: The Thames Path 100 is on Saturday, 1 May 2027, with the start at 09:00 local time.
How hilly is the Thames Path 100?: The course has 560 m of climbing and 505 m of descent. We rate it very hilly. It is a point to point course on trail.
What is the weather usually like at the Thames Path 100?: Around the race date in 2016–2025, the temperature at the 09:00 start averaged 12°C, rising to about 15°C during the race, with 61% humidity. It rained on about 21% of those days.
How do you get a place in the Thames Path 100?: Entry is first come, first served. The standard entry fee is about $300. Check the official site for the current registration dates.
What is the cut-off time for the Thames Path 100?: Runners have 30 hours to finish.

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<a href="https://irun42.com/race/thames-path-100" title="Thames Path 100 on iRun42"><img src="https://irun42.com/badge/thames-path-100.svg" width="300" height="120" alt="Thames Path 100: course, elevation and race-day weather on iRun42" /></a>

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