Musician
Sean "Diddy" Combs
Rapper and record producer (P. Diddy, Bad Boy Records)
All evidence
1 record, newest first. Strength changes with age and weight class, so check the date and context before you compare.
2003
- Marathon4:14:54
“completed the New York City Marathon on Sunday in 4 hours, 14 minutes, 54 seconds.”
Some celebrity lists (e.g. Wikipedia list of non-professional marathon runners) give 4:14:52; AP figure kept.