- Who
- Sunita (Suni) Williams
- Where
- Not Applicable (International Space Station)
- When
The fastest time to complete a marathon in orbit was achieved by NASA astronaut, Sunita Williams (USA), of Needham, Massachusetts, USA, above Earth on board the International Space Station. Ms Williams, who ran the 42 km (26.2 miles) strapped to a treadmill with bungy cord, competed as an offical entrant of the 111th Boston Marathon (USA) on 16 April 2007, finishing in a time of 4 hr 24 min.
Ms Williams circled the Earth at least twice in the process, running as fast as 12.8 km/h (8 mph), but flying more than 8 km (5 miles) each second.
