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

Chiltern 50 Challenge Logo
Ultra Challenge

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 Run Series
Third Party Challenges

Basingstoke Half Marathon, 10K & 5K Run

Date & Time:

Registration Fee:

£15 - £48

Whether 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.

London Marathon
Third Party Challenges

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.