Completed Event: Men's Cross Country at Friar Invitational on September 5, 2025 , , 2nd - 59 Pts.
Final

Men's Cross Country
at Friar Invitational
2011-2012 (Freshman): O'Sullivan made an immediate impact during his first season with the Big Green. Placed 6th at the Dartmouth Invitational, helping the Big Green to the team sweep. Finished 43th at Heps and 23rd at the New England Championships. In indoor, O'Sullivan had a season-best time of 8:31.81 for 3000m at the Yale-Columbia meet. Finished 5th at Outdoor IC4A Championships in the 10000m with a time of 30:15.32.
Before Dartmouth: A four-year track and cross country team member at Sydenham High School ... From 2007 to 2011 he competed in the Eastern Ontario (EOSSAA) Championships for both track and cross country. Sophomore year he placed 12th at the OFSAA Championships for the 3000m in track ... Senior year he placed 2nd for the Nationals Team in cross country... Outside of athletics, he was a member of the Debate Team and Math League for his high school.
Personal: Dylan O'Sullivan is the son of Ron and Arline O'Sullivan and he has one sister. At Dartmouth, he plans to study Human Biology and participate as a member of the Debate Team.
2014-2015 Highs | Indoor | Outdoor |
5000m | 14:38.04 (Mason - 4/11/15) | |
10,000m | 30:27.28 (Penn R - 4/23/15) |
2013-2014 Highs | Indoor | Outdoor |
3000m | 8:34.84 (BU-Val. - 2/8/14) | |
5000m | 14:21.12* (Terrier - 1/25/14) |
2012-2013 Highs | Indoor | Outdoor |
3000m | 8:22.64 (Dartmouth Relays - 1/13/13) | |
5000m | 14:27.73 (Terrier - 1/26/13) | |
10000m | 30:32.96 (Heps - 5/3/13) |
2011-12 Top Performances |
||
1500m | 4:00.87 | NBB Twilight II 5/19/12 |
3000m | 8:31.81 | Yale-Columbia 1/21/12 |
5000m | 14:28.84 | Prin-Ellis 4/19/12 |
10000m | 30:15.32 | IC4A 5/11/12 |