We have signed-up for the Ultra Challenge Series for 2015 which allows people who wish to, to sign-up for various charity fundraising challenges:
- London 2 Brighton Challenge
- Grand Union Challenge
- Isle of Wight Challenge
- The London 2 Cambridge Challenge
- Thames Path Challenge
The two websites showing the series as a whole are www.ultrachallenge.com and www.run100challenge.com.
Only charities listed by Ultra allow you to sign-up, and of course they take a percentage of money raised for organising the events.