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Runner Profile
Arielle Guo
St. Mark's / Current / projected PR 31:13.00
Course-adjusted PR 30:39.84
Adjusted-best source course
Oct 4, 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 past results before the 2026 season begins.
| Date | Race | Course | Raw / Adj. | Place |
|---|---|---|---|---|
| Nov 8, 2025 | NEPSTA Division II Championship (JV)Nov 8, 2025 · Place 52 | Williston Northampton School 5K | Raw 27:44.00Adj. 27:08.35 | 52 |
| Oct 31, 2025 | Independent School League (ISL) Championship (JV)Oct 31, 2025 · Place 79 | Wrentham Championship 5K | Raw 27:28.84Adj. 28:10.17 | 79 |
| Oct 25, 2025 | Middlesex Cross Country hosting St. Mark's, Tabor, Governor's (JV)Oct 25, 2025 · Place 51 | Middlesex 5K Course | Raw 28:58.00Adj. 28:24.08 | 51 |
| Oct 18, 2025 | XC @ Tabor (JV)Oct 18, 2025 · Place 27 | Washington Park 5K Course | Raw 28:04.00Adj. 28:24.83 | 27 |
| Oct 11, 2025 | St. Mark's vs. BB&N vs. Brooks (JV)Oct 11, 2025 · Place 25 | St. Mark's School Championship Course | Raw 27:43.00Adj. 27:25.31 | 25 |
| Oct 4, 2025 | St. George's (G), Lawrence (L), St. Mark's (M) Girls CombinedOct 4, 2025 · Place 24 | St. Georges 5K | Raw 31:13.00Adj. 30:39.84 | 24 |
| Sep 27, 2025 | St. Mark's vs. Nobles vs. Winsor (JV)Sep 27, 2025 · Place 35 | St. Mark's School Championship Course | Raw 30:57.00Adj. 30:37.25 | 35 |