Britain's Sonia Samuels and Scott Overall speak to BBC Athletics presenter Gabby Logan and explain the process of qualifying for the 2016 Rio Olympic Games at this year's London Marathon.
WATCH MORE: Peake prepares to run Marathon in space
Get involved: Send us your London Marathon stories and messages by using the hashtag #GetInspired on social media
Feeling inspired? There are events for all abilities so use this handy guide to find the best one for you.