Force India’s chief engineer Dominic Harlow made it back from China in time to contest the 2010 London Marathon.
He completed the 42 kilometre course around the Thames on Sunday in just over three and a half hours.
Even faster was F1’s former safety car driver Oliver Gavin, 37, whose time under 3 hours placed him 657th overall amid 35,000 runners.
"My time today should now be enough to qualify me for the Boston or New York marathons ... if I want to do either of them. My legs need to recover first!" he laughed.
Another F1-related runner was Sir Richard Branson, whose Virgin brand sponsored the event.
He crossed the line after 5 hours.