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Bryn Mawr College

Bryn Mawr Owls WordMark

2025 Outdoor Track and Field Roster

Maggie Balderstone
OneMoreShotPhotography - Tom Weishaar

Colby Rossmassler

  • Height 5-7
  • Year Senior
  • Hometown Hatfield, Mass.
  • High School The Putney School
  • Season at BMC Hurdles/Multi

Biography

Career Results

Career Honors
  • Centennial Conference Academic Honor Roll (2023, 2024, 2025)
  • Member of USTFCCCA All-Academic Team (2021-22; 2022-23)
Outdoor Personal Records 
  • 100m: 15.12 (2022 Ursinus College Outdoor Invitational)
  • 100m Hurdles: 19.51 (2022 Centennial Conference Championships)
  • Long Jump: 4.00m (2024 Blue Jay Tune-Up)
  • High Jump: 1.50m (2025 Millersville Invite) 
Indoor Personal Records
  • 60m: 9.38 (2023 Coach I Open) 
  • 60m Hurdles: 11.54 (2023 Princeton Indoor Invitational) 
  • 200m: 32.93 (2022 McElligott Invitational) 
  • 800m: 3:08.74 (2023 Princeton Indoor Invitational) 
  • Shot Put: 6.63m (2024 Keogh Invitational) 
  • Long Jump: 4.11m (2023 Seamus McElligott Invitational) 
  • High Jump: 1.42m (2023 Seamus McElligott Invitational) 
  • Pentathlon: 1402 (2023 Centennial Conference Championships) 
Outdoor Career Highlights

2025 

  • Placed 5th in the high jump at Centennial Conference Championships 
  • Placed 4th in high jump at Millersville Invite 
  • Competed in the high jump at Ursinus Track & Field Festival 
2024
  • Competed in the high jump at the Centennial Conference Championships
  • Competed in the high jump and long jump at Blue Jay Tune-Up
  • Placed 9th in the high jump at Ursinus Track & Field Festival
2023
  • Did not compete
2022
  • Collegiate Outdoor T&F debut at the WCU Quad+ Invitational
  • Placed 5th in the 100m hurdles at the WCU Quad+ Invitational
  • Competed in the 100m hurdles and the 4x100m at the Centennial Conference Championships

Historical Player Information

  • 2021-22First Year

    5'7"
  • 2024Junior

    5'7"
  • 2025Senior

    5'7"