Please tell us about great fundraising challenges, family hikes, open water swims, canoeing adventures and cycling sportives and tours the world over. They can be self-guided or organised, competitive or individually challenging, as long as you were stretched somewhere close to your limits.
Send us details of your active adventure via GuardianWitness, with as much detail as you can (including website, accommodation and prices etc, if possible).
The best tips will appear in print in Guardian Travel and the winner, chosen by Tom Hall of Lonely Planet, will receive a £200 hotel voucher from UK.hotels.com, allowing you to stay in more than 260,000 places worldwide. Submit your tip by clicking the blue button and using the text tab.
You’re welcome to add a photo if you own the copyright to it – but it’s the text we’ll be judging.
Closes Wednesday, 17 January 2018, 10am GMT
