Grim Challenge

Secondary header image
1 / 9
Secondary header image
Secondary header image

Booked 40 times in the last week


Booked 40 times in the last week
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.
8 Miles and 4 Miles
View details
Sun, 4 Dec 2022
View logistics
Aldershot, United Kingdom
View location
(7 Reviews)
All reviews
Perks of booking with Let's Do This

Best price guarantee


Official booking partner

We're #1 in customer satisfaction


20 to 50m elevation gain per km

After booking your event, invite your friends to join you and you'll get £10 credit if they make it their first Let's Do This booking.

Fleet Rd, Aldershot GU11, UK
Start times
Sun, 4 Dec 2022
8 Miles:
10:10am |
4 Miles:
Here's what races are 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 with more than 1000 runners taking part in the event.
It returns in 2022 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
  • Grim Challenge Headscarf
  • Prizes for race winners
  • Free parking
  • Bag and Key Drop
  • Toilets
  • Marked and marshalled course
Secondary header image
Grim Challenge T-Shirt
Secondary header image
Secondary header image
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 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 Sharp 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.
Recommended Kit
  • A spare change of dry clothes
  • Technical Sports Top
  • Running Leggings
  • Running Shoes (spikes not permitted)
7 reviews
Did the race in 2021
My first time had fun but very very cold friendly runners cant want to see the photos which you done thankyou im doing it again next year
Did the race in 2021
Absolutely brilliant day and thoroughly enjoyed the course. Marshals were excellent and friendly and the course as always a good challenge this is my third year doing this and will 100% be back next year. Goodie bag at the end was a great bonus too! Only one small negative is the medal is the same as I got previously would of liked the date on the ribbon so I could know the difference.
Did the race in 2021
Communication was fantastic throughout! The Grim was fun and everyone seemed to love it. We'll be back. The medal and freebies at the end were a fantastic surprise glad that was included.
Did the race in 2021
First grim for me won’t be the last great venue friendly atmosphere 4 miles good starting point 8 miles next
Did the race in 2021
Pretty awful, I mean it’s been 24 hours and no results have been posted yet! Most marathons with 15000 people have the results almost instantaneously. Course wasn’t exactly an obstacle course. It had one net on an 8 mile route. Where was the actual obstacles? Pretty abysmal
Did the race in 2018
As expected. Changing was difficult after the event
Did the race in 2018
This was the last ever. No more Grim.
Less reviews

Aviation House, 125 Kingsway,

London, WC2B 6NH

Reg number 10083277

Follow Us
© Let's Do This 2022