Peter Callahan

Collegiate Callahan first attended and ran at Princeton University, where he graduated in 2013. While at Princeton, he was coached by Steve Dolan and Jason Vigilante and set the school record in the indoor 1,000 meters at 2:20.78. He first broke four minutes for the mile in the winter of his Junior year at Princeton with a time of 3:58.86 at the Sykes-Sabock Invitational at Penn State University.

Callahan earned 7 Ivy League titles, 1 NCAA Division I Indoor Track title as a part of the Distance Medley team and 1 All-America at Princeton University.

Due to skipping two seasons from multiple injuries, he got fifth year NCAA eligibility when he enrolled in a graduate program at University of New Mexico.

While at University of New Mexico, Callahan placed fourth in the NCAA outdoor men's 1500 meters finals for two consecutive years, in 2014 and 2015. Callahan earned a Mountain West Conference Outdoor Track 1500 meter title.

Callahan finished a graduate degree in Master of Science in geography (Concentration in Environmental Studies) from University of New Mexico.

Post-collegiate Callahan made an appearance as a professional rabbit in the 2015 Diamond League men's 3000 meters. In May 2016, the IAAF approved Callahan to represent Belgium in international competition. He was eligible to represent Belgium due to his mother having been born in Antwerp. On July 22, 2016, Callahan raced in the men's mile at the 2016 Morton Games in Dublin, Ireland, where he finished in 3:56.14 for fourth place.

Callahan placed first at 2017 European Team Championships in the 1500 meters.

Callahan placed fourth in the 1500 meters in 3:54.71 at the 2018 Belgium Athletics Championship on July 8.

Callahan placed eighth in the first heat (30th overall) at 2018 European Athletics Championships in the 1500 meters.

Seconds Away is an athlete documentary directed by Benjamin Kegan that follows Peter Callahan and his longtime coach, Patrick McHugh, during the process of training for the qualifications to the Tokyo 2020 Summer Olympics. Callahan failed to qualify by 1.15 seconds.

Coaching Northwestern University has added four-time All-American Peter Callahan as a women's cross country coach under head coach 'A Havahla Haynes February 2018. Callahan, the Evanston native attended North Shore Country Day School in Winnetka, Illinois.

University of Chicago has added four-time All-American Peter Callahan as an assistant cross country coach under head coach Chris Hall