Challenge Events Calendar
We have guaranteed places in some of the UK's best challenges so join the race for our world today. We would love to welcome you to the team.
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© Tristan Fewings / WWF-UK
Events in 2026
April
- Sunday 26 April - TCS London Marathon
May
- Saturday 2 - Sunday 3 May - Isle of Wight Challenge
- Saturday 16 - Sunday 17 May - Jurassic Coast Challenge
- Sunday 17 May - Hackney Half Marathon
- Saturday 23 - Sunday 24 May - London 2 Brighton Challenge
- Sunday 24 May - Edinburgh Half Marathon
- Sunday 24 May - Edinburgh Marathon
© Tristan Fewings / WWF-UK
June
- Saturday 6 - Sunday 7 June - Lake District Challenge
- Saturday 13 - Sunday 14 June - Cotswold Way Challenge
July
- Saturday 4 - Sunday 5 July - Peak District Challenge
- Sunday 12 July - Saucony London 10K
- Saturday 18 - Sunday 19 July - Gower Peninsula Challenge
- Saturday 25 July - South West Coast 50 Challenge
August
- Saturday 1 August - North Downs 50 Challenge
- Saturday 22 August - London Summer Walk
© Tristan Fewings
September
- Saturday 5 - Sunday 6 September - South Coast Challenge
- Sunday 6 September - The Big Half
- Friday 11 September - Thames Moonlight 10 Walk
- Saturday 12 September - Richmond 10K
- Saturday 12 September - Thames Bridges Trek
- Saturday 12 - Sunday 13 - Thames Path Challenge
- Sunday 13 September - Great North Run
- Sunday 13 September - Richmond Half Marathon
- Sunday 13 September - Richmond Marathon
- Saturday 19 September - Swim Serpentine (2 miles)
- Saturday 26 September - Chiltern 50 Challenge
October
- Sunday 4 October - Cardiff Half Marathon
- Saturday 10 October - Kent Downs 50 Challenge
- Sunday 11 October - Royal Parks Half Marathon
- Saturday 31 October - Halloween Walk