The most marathons completed on crutches is 6 by John Sandford Hart (UK) all at the London Marathon in 2003, 2006, and 2008-11. His fastest time with the use of two legs on crutches was 6 hr 24 min 08 sec, which set a world record in 2011.

Sandford Hart uses a prosthetic leg after having his right leg amputated in 2009.