Fastest marathon run by farther and son
Who
Ben Green, Graham Green
What
5 hours 2 minutes 12 seconds hour(s):minute(s):second(s)
Where
United Kingdom (London)
When

The fastest marathon run by parent and child on aggregate is 5 hr 2 min 12 sec and was achieved by Graham Green and his son Ben Green (both UK) at the 2015 Virgin London Marathon, in London, UK, on 25 April 2015.

Graham and Ben were also the previous holders of this record from 2014.