Completed Event: Men's Track & Field at Penn Relays on April 23, 2026 ,
Final

Men's Track & Field
at Penn Relays

Men's Track & Field
at Penn Relays
Final

Men's Track & Field
at Jay Carisella Invite
Men's Track & Field
at Battle Road Meet

Men's Track & Field
at The FIRE Meet

Men's Track & Field
at Ivy League Outdoor Championships

2011-2012 (Freshman): Terwilliger had a succesful first season for the Big Green, highlighted with a 19th place finish at the New England Championships, helping the sub-varsity team defend its title. Placed 65th at the Mayor's Cup.
Before Dartmouth: A four-year letterwinner in track and cross country at Cheverus High School ... his senior year he captained both the cross country and track teams ... From 2008 to 2011 he won the 4 x 800m Maine State Championship for track ... his senior year he was selected as an All State 1st Team member for both cross country and track. Outside of athletics, he was a member of the National Honor Society and a member of the BHS Marching Band.
Personal: Jack Terwilliger is the son of David and Elizabeth Terwilliger and he has one brother. His father, David, was a member of the University of Vermont ski team (1980-1981).
| 2014-2015 Highs | Indoor | Outdoor |
| Mile | 4:15.68 (Valentine's - 2/14/15) | |
| 1000m | 2:30.00 (Y-C - 1/24/15) | |
| 1500m | 4:04.44 (Lowell - 4/18/15) |
| 2013-2014 Highs | Indoor | Outdoor |
| Mile | 4:29.78 (Dart Relays - 1/12/14) | |
| 3000m | 9:14.46 (Dart. Classic - 2/1/14) |
| 2012-2013 Highs | Indoor | Outdoor |
| 1000m | 2:32.73 (Dartmouth Classic - 2/2/13) | |
| Mile | 4:16.01 (Heps - 2/23/13) | |
| 1500m | 3:55.30 (NB Twi. II - 5/18/13) |