The Big Half

We have five spots for London's brand new half marathon. Run through central London from Tower Bridge to the Cutty Sark.Read more

Ride London 2018

Follow in the bike tracks of some of the world’s best cyclists in a race that starts the Queen Elizabeth Olympic Park and finishes on the mall. Read more

Other challenge events

Glass Door works with Discover Adventure who are experts in trek and cycling challenge events in the UK and countries across the world. There is something to suit everyone and dates throughout the year.Read more