Twilight Runway Challenge
Date & Time:
Take on the Twilight Runway Challenge and use it to get fit, beat your personal best, take part as a sports team, with colleagues, friends or family, whilst raising funds to support Sebastian's Action Trust.
Events and challenges
From big challenges to brilliant nights out, our events bring people together to have fun and help families when it matters most
Thames Path Challenge
Date & Time:
-Prepare for an unforgettable adventure against the backdrop of England's greatest river. Join over 3000 adventurers at the iconic Putney Bridge start, where the journey begins along the famous Towpath.
Chiltern 50 Challenge
Date & Time:
Superb 50 km looped challenge in some of the Chilterns finest countryside, with historic trails, rolling hills, nature reserves, and fantastic views. At our basecamp in Henley, there’s a Saturday night celebration meal & bar, with extensive on-site camping & parking options. A route with real variety and some wonderful scenery – and easily accessible from London.
Basingstoke Half Marathon, 10K & 5K Run
Date & Time:
Registration Fee:
£15 - £48Whether you’re taking on your first 5K or pushing yourself through a half marathon, this is a great opportunity to support your community while enjoying a scenic, traffic-free course through the Hampshire countryside.
TCS London Marathon 2027
Date & Time:
The TCS London Marathon is a serious challenge, but one that brings an incredible sense of achievement. With team Sebastian’s Action Trust behind you, every mile you run will make a real difference to families facing life-limiting childhood illness.