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Grim Challenge

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Grim Challenge

Save this event for later and come back to it when you're ready.

Price increases soon
£10 - £32
The origins of this event can be traced back to 2003, and there's good reason for why participants keep coming back to this cracker of a day out. You'll slip and scramble your way through a variety of fun natural obstacles over an action-packed 4 or 8-mile course. Enjoy a custom finishers medal too.
4 Miles and 8 Miles
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Sun, 1 Dec 2024
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Aldershot, United Kingdom
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(374 Reviews)
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Fleet Rd, Aldershot GU11, UK
Start times
Sunday, 1 Dec 2024
4 Miles: 10:00 am8 Miles: 10:10 am
Here are the distances available for Grim Challenge
The GRIM is one of the original muddy/trail/obstacle races with a history that dates back to 2003. After a COVID absence in 2020 it bounced back strongly in 2021, growing to more than 1000 runners taking part in the event in 2022 and 2023. We expect the Grim Challenge's popularity to continue to grow in 2024.
The event returns in 2024 in much the same format: the route takes you over an Army vehicle testing ground in Aldershot with two distance options, a main race 8-miler and a lighter version over a shorter 4-mile course.
Although the GRIM is a tough trail race in which you will certainly find yourself at times cold, wet and dirty, it is not an obstacle race, it's a running event. We don't build any ramps, walls or swings on the course.
All the obstacles are natural, formed by tanks driving over the route or by incessant rain in the weeks leading up to the event. Of course at this stage, we can't guarantee the rain but it's never let us down before. In a few places you will be crawling under cargo nets or wading through waist high water.
The distance may not sound daunting but don't take this lightly, on a cold December morning, the GRIM is a challenge and you will think it is aptly named when you have run it.
  • Finisher's Medal
  • *NEW* Grim Challenge Beanie
  • Prizes for race winners
  • Free parking
  • Bag and Key Drop
  • Toilets
  • Marked and marshalled course
  • Post race refreshments available to purchase.
Fleet Rd, Aldershot GU11, UK
Get full directionsExternalLink
There will be free parking onsite for all entrants.
  • Entrance Gate to The Grim Challenge Car Park: ///serves.part.rainy or ///fuels.model.globe
  • Race HQ/ Registration Tent: /// plays.hidden.merit
  • Start/ Finish: ///horn.mason.third
  • Toilets: ///hero.flip.asking
  • Spectator Area: ///pulse.hits.comet This gives the general location for Spectators – Please also pay careful attention to signs and marshal instructions/ directions.
10:00 4 miles starts
10:10 8 miles starts
Age Requirements
All entrants must be 16 and older to enter the 8 mile challenge, and 13 and older to enter the 4 mile challenge.
Race packs will be available to collect on the day at Race HQ.
Optional T-Shirt
If you choose to purchase an event T-shirt, the unisex sizes are as follows:
  • XS - (Chest = 45cm Length = 66cm)
  • S - (Chest = 48cm Length = 68cm)
  • M - (Chest = 51cm Length = 70cm)
  • L - (Chest = 54cm Length = 72cm)
  • XL - (Chest = 57cm Length = 74cm)
Medical Support
Medical support will be provided by Codeblue Medical Services.
Toilets are located at the start/finish area.
Aid Stations
Water and Gels will be available on the 8-mile course and at the finish line for both races.
Headphones and Electronics
Headphones and electronic equipment are discouraged though not explicitly forbidden, please use your judgement.
Changing Facilities
Changing facilities are provided on-site, please note that there are no showers at the event area so please bring a change of clothes.
Can I bring my dog to the Grim Challenge?
Unfortunately dogs are not permitted at the event.
Can I run with a buggy at the Grim Challenge?
No, unfortunately buggies and pushchairs are not permitted.
Is the Grim Challenge suitable for wheelchairs?
No, this course is not wheelchair friendly.
374 reviews

Early bird entry - ends soon

Early bird entry - ends soon

Price increases soon
£10 - £32

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