Running
Colworth Marathon Challenge
42.2 km
Start: Jun 24, 10:00 PM
Colworth Marathon Challenge
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Road runs in United Kingdom, Sharnbrook
Distances
Running
Colworth Half Marathon
21.1 km
Running
Colworth Half Marathon
13.1 km
Start: Jun 24, 10:30 PM
Running
Colworth Trail
13.1 km
Running
Colworth Trail 8.1
8.1 km
Start: 12:00 AM
Running
Colworth 5
8 km
Running
Family Fun
8 km
Running
Colworth 5
5 km
Start: 07:30 AM
About
A unique running event set in the beautiful Colworth Estate, North Bedfordshire, UK, combining three races across three days totaling 26.2 miles: Colworth 5, Colworth Trail 8.1, and Colworth Half Marathon, with free camping and family entertainment.
Catering & aid stations
Food and drinks available for purchase on all three days; bar is cashless only.
Pacers
Pacers will be provided for the Colworth Half Marathon and selected Trail and 5 events. Specific target times per start wave and pacer flag details are published on the event schedule (Renntag für Laufende) and registration materials.
Results
View official resultsSurface mix
- 100% asphalt
Typical weather in Sharnbrook
Monthly averages based on historical data (2000–present).
Jan7°2°
↑ 08:04
↓ 16:18
Feb8°2°
↑ 07:19
↓ 17:14
Mar10°3°
↑ 06:16
↓ 18:07
Apr13°5°
↑ 06:05
↓ 20:00
May16°8°
↑ 05:08
↓ 20:50
Jun20°11°
↑ 04:41
↓ 21:25
Jul22°13°
↑ 05:00
↓ 21:16
Aug21°13°
↑ 05:47
↓ 20:27
Sep19°11°
↑ 06:37
↓ 19:18
Oct15°9°
↑ 07:27
↓ 18:09
Nov10°5°
↑ 07:23
↓ 16:11
Dec8°3°
↑ 08:05
↓ 15:51
Sign up now
Register on the official organiser website.
Sign up nowWhat's included in entry
- Colworth 5 race entry
- Colworth Trail 8.1 race entry
- Colworth Half Marathon race entry
- Free camping (must be booked)
- Kids races and family entertainment
FAQ
Is on‑day entry available for the Colworth 5?
No on‑day entry for the Colworth 5. Late entry for the Trail and Half Marathon is available in the marquee up to an hour before their start times.
What are the age limits for each race?
Colworth 5: 16+. Colworth Trail 8.1: 18+. Colworth Half Marathon: 18+. Family Fun races have separate kids categories.
Are there aid stations and toilets on course?
Yes. There are water stations at approximately halfway on the Colworth 5; three water stations on the Trail route at 2, 3.5, and 5.5 miles; and several water stations on the Half Marathon course. Toilets and limited changing facilities are available at the venue.
Is camping available and what are the rules?
Free camping is available to race participants and non‑race participants but must be booked in advance. Arrival Friday 9:00–15:00, departure Sunday by 15:00. No vehicles on the camping field; pets allowed on a short lead except on Trail and Half Marathon days.
Last updated: Jun 5, 2026, 11:43:43 PM
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