Fastest marathon by a mascot (male)
- Who
- Jason O Byrne
- What
- 3:14:49 hour(s):minute(s):second(s)
- Where
- Ireland (Dublin City Marathon)
- When
- 26 October 2025
Age Restriction: Applications for this record title will only be accepted if the applicant is 16 years of age or over.
The fastest marathon by a mascot (male) is 3 hr 14 min 49 sec, and was achieved by Jason O'Byrne (Ireland), at the 2025 Irish Life Dublin Marathon, in Dublin, Ireland, on 26 October 2025.
Jason has performed as Leo the Lion, the mascot for Leicester Rugby Club, since 2022.