GREENWICH and Bexley Community Hospice has a limited number of places available for a 100km moonlit bike ride.
The Nightrider challenge, which raises money for more than 100 charities, takes place from 11pm on June 9 at Crystal Palace.
It is expected to finish by 10am on June, 10 although most cyclists will complete the route in around six to eight hours.
Cyclists will tour the capital's most famous landmarks, including Tower Bridge, Piccadilly Circus, Canary Wharf, London Eye and the Royal Albert Hall.
All participants will receive a medal and a breakfast including a sausage, bacon or egg roll and hot drink.
To sign up, call the fundraising team on 020 8319 9230 or email firstname.lastname@example.org
For more information about the event, visit nightrider.org.uk or communityhospice.org.uk