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Runner Profile
Colin Grierson
Belmont Hill School / All-time PR 18:42.00
Course-adjusted PR 18:09.30
Adjusted-best source course
Oct 25, 2025
Rankings use the course-adjusted PR, not the raw race time.
Progress graph
Results over time
Each season gets its own line. Hover a dot for the race name and click it to open the race page.
2025
2026Latest
Race History
Most recent results first
Showing every imported race for this runner.
| Date | Race | Course | Raw / Adj. | Place |
|---|---|---|---|---|
| Sep 19, 2026 | Belmont Hill, BB&N, Tabor at Governor'sSep 19, 2026 · Place 9 | Governor's 5K Course | Raw 19:09.00Adj. 18:40.63 | 9 |
| Sep 5, 2026 | Bobcat Invitational 2026 - Boys VarsitySep 5, 2026 · Place 52 | DeMeritt Hill Farm | Raw 19:44.6Adj. 19:11.38 | 52 |
| Aug 29, 2026 | USATF-NE Summer 5000m on the Track - Men (Track exhibition)Aug 29, 2026 · Place 11 | Track 5000m | Raw 19:50.76Official track mark | 11 |
| Nov 8, 2025 | NEPSTA Division I Championship (JV)Nov 8, 2025 · Place 24 | Taft School 5K | Raw 19:31.00Adj. 18:59.88 | 24 |
| Oct 31, 2025 | Independent School League (ISL) Championship (JV)Oct 31, 2025 · Place 3 | Wrentham Championship 5K | Raw 18:02.24Adj. 18:30.77 | 3 |
| Oct 25, 2025 | Nobles, Rivers, Belmont Hill at Lawrence AcademyOct 25, 2025 · Place 17 | LA 5K Course | Raw 18:42.00Adj. 18:09.30 | 17 |
| Oct 18, 2025 | St. Sebastian's vs. Belmont HillOct 18, 2025 · Place 8 | St. Sebastian's 5K Course | Raw 19:17.00Adj. 18:32.84 | 8 |
| Oct 11, 2025 | St. Mark's vs Brooks vs Belmont Hill vs BB&NOct 11, 2025 · Place 11 | St. Mark's School Championship Course | Raw 18:23.00Adj. 18:12.65 | 11 |
| Sep 27, 2025 | Boys Varsity Results: St. Mark's vs Belmont Hill vs Nobles vs ThayerSep 27, 2025 · Place 18 | St. Mark's School Championship Course | Raw 18:44.00Adj. 18:33.45 | 18 |
| Sep 20, 2025 | BB&N at Belmont HillSep 20, 2025 · Place 12 | Rock Meadow Short Loop 5K | Raw 18:38.00Adj. 18:24.28 | 12 |