Both Jez and Joe stress the importance of training in your outfit for a long time before attempting a marathon in it.
“Half a mile is not enough – you must do long distances to make sure it works,” Joe says.
He regularly ran in his swimming trunks on Wimbledon Common – with the goggles, armbands and snorkle – and got lots of “double and triple takes” from passers-by.
Jez says cars beep at him when he runs as a stormtrooper, but it’s vital to do it as he finds where his costume cuts and chafes him and he can work out wear to put tape and lubricant.
He also sees it as a good fund-raising opportunity – he advises putting your social media handle clearly on your costume so people who see you out running can easily find you later to donate money.