On the same day as the London Marathon a 26.2 mile Kayakathon will be held on the river Thames.
The London Kayakathon hopes to build on the success of last years Kayakathon and get even more experienced kayakers on the river Thames. The main aim of the event is to raise money for a variety of charities.
Kayakers paddle from Tower Bridge to Chiswick Bridge and back as a group.
For more information and to sign up, please visit http://www.londonkayakathon.com/