With the vast majority of the 80,000 hopefuls wanting to ride August's second edition of the Prudential RideLondon-Surrey 100 set to be disappointed this week when the results of the ballot are announced, childbirth charity Tommy's is calling on people who miss out to sign up for one of its places and raise money for the cause.

The charity, which funds medical research into the causes and prevention of miscarriage, premature birth and stillbirth, also has places available on the 100km Nightrider on 7-8 June, a moonlit ride past many of London's most iconic landmarks.

To secure one of the places on the Prudential RideLondon-Surrey 100 on Sunday 10 August, you'd need to commit to raising a minimum of £650 in sponsorship to cover the charity's costs, while for Nightrider, the figure is £175, in both cases excluding gift aid.

If you're lucky enough to have your own place, you can still ride for Tommy's, and in that case no minimum donation is required.

In return, fundraisers get a Tommy's cycling top as well as full support to help maximise their sponsorship efforts.

Cycling events have in recent years become a big way for charities to raise money, and there are plenty that advertise in print and online to attract supporters. That's not an option for many smaller organisations such as Tommy's, which have to rely on word of mouth to fill places.

You can find more information on both events as well as how to sign up to ride them for Tommy's here.