- Eoin Hughes, Tommy Hughes
- 4:59:22 hour(s):minute(s):second(s)
- Germany (Frankfurt)
The fastest marathon run by parent and child on aggregate is 4 hr 59 min 22 sec and was achieved by Tommy and Eoin Hughes (both Ireland) at the 2019 Frankfurt Marathon, in Frankfurt, Germany, on 27 October 2019.
Tommy is a long distance runner who represented Ireland in the 1992 Summer Olympics. Eoin is his son.