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Runner Profile
Colin Grierson
Belmont Hill School / All-time PR 18:42.00
Course-adjusted PR 18:07.93
Adjusted-best source course
Oct 25, 2025
Rankings use the course-adjusted PR, not the raw race time.
Progress graph
Season progression
Each race appears as a dot in chronological order. Hover a dot for the race name and click it to open the race page.
Race History
Most recent results first
Showing every imported race for this runner.
| Date | Race | Course | Raw / Adj. | Place |
|---|---|---|---|---|
| Nov 8, 2025 | NEPSTA Division I Championship (JV)Nov 8, 2025 · Place 24 | Taft School 5K | Raw 19:31.00Adj. 18:58.44 | 24 |
| Oct 31, 2025 | Independent School League (ISL) Championship (JV)Oct 31, 2025 · Place 3 | Wrentham Championship 5K | Raw 18:02.24Adj. 18:29.37 | 3 |
| Oct 25, 2025 | Nobles, Rivers, Belmont Hill at Lawrence AcademyOct 25, 2025 · Place 17 | LA 5K Course | Raw 18:42.00Adj. 18:07.93 | 17 |
| Oct 18, 2025 | St. Sebastian's vs. Belmont Hill (JV)Oct 18, 2025 · Place 8 | St. Sebastian's 5K Course | Raw 19:17.00Adj. 18:31.43 | 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. 18:11.27 | 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. 18:32.05 | 18 |
| Sep 20, 2025 | BB&N at Belmont HillSep 20, 2025 · Place 12 | Rock Meadow Short Loop 5K | Raw 18:38.00Adj. 18:22.89 | 12 |