Pairwise course analysis
Andover 5Kvs.Groton School
Based on runners who competed on both courses during the same season. Positive values mean the second course ran slower; negative values mean it ran faster.
Model verdict
Groton School runs slower
+0.51%
Roughly 6.1 seconds slower for a 20:00 runner
Paired observations
37
Developing evidence
Median difference
+0.91%
Middle runner-season comparison
Overall estimate
+0.51%
Network-adjusted course estimate
Middle 50% range
+4.22%
Observed variation (IQR)
Direction and magnitude
Relative course speed
Confidence interval
-0.91% to +1.67%
Scale shown
-5% to +5%
Course context
The two courses
Underlying runner comparisons
Same-season evidence
Each row represents one runner-season with valid results on both courses. Median performances reduce the effect of one unusually good or poor race. JV and varsity results are included.
| Runner | Season | Andover 5K | Groton School | Difference |
|---|---|---|---|---|
| Molly Sheehan | 2021 | 25:55.001 race | 22:28.001 race | -13.31% |
| Claire Choe | 2021 | 23:25.001 race | 21:15.001 race | -9.25% |
| Nathaniel Voss | 2021 | 18:56.001 race | 18:17.001 race | -3.43% |
| James Good | 2021 | 21:20.001 race | 20:40.001 race | -3.12% |
| Julia Torrey | 2021 | 21:58.001 race | 21:19.001 race | -2.96% |
| Kailin Shi | 2021 | 23:23.001 race | 22:56.001 race | -1.92% |
| Gabriel (Gabby) Guerrero | 2021 | 17:39.001 race | 17:20.001 race | -1.79% |
| Aston Chan | 2021 | 18:26.001 race | 18:07.001 race | -1.72% |
| Angus Harrison | 2021 | 19:17.001 race | 18:58.001 race | -1.64% |
| Natalie Williamson | 2021 | 20:38.001 race | 20:19.001 race | -1.53% |
| Connor Steele | 2021 | 18:52.001 race | 18:38.001 race | -1.24% |
| Ruby Tsai | 2021 | 24:08.001 race | 24:04.001 race | -0.28% |
| Arec Keomurjian | 2021 | 18:39.001 race | 18:36.001 race | -0.27% |
| Carver Porter | 2021 | 20:33.001 race | 20:33.001 race | 0.00% |
| Michael Bobo | 2021 | 19:31.001 race | 19:32.001 race | +0.09% |
| Aaron Stanger | 2021 | 18:17.001 race | 18:22.001 race | +0.46% |
| Alexander Cesaretti | 2021 | 19:50.001 race | 19:57.001 race | +0.59% |
| Jackson Pagan | 2021 | 19:29.001 race | 19:37.001 race | +0.68% |
| Jeremy Eaton | 2021 | 20:07.001 race | 20:18.001 race | +0.91% |
| Peter Leitzes | 2021 | 19:09.001 race | 19:20.001 race | +0.96% |
| James Donahue | 2021 | 15:36.001 race | 15:46.001 race | +1.07% |
| Akshaya Sundraraj | 2021 | 32:07.001 race | 32:30.001 race | +1.19% |
| Ryan Wei | 2021 | 17:51.001 race | 18:05.001 race | +1.31% |
| Yaman Habip | 2021 | 18:58.001 race | 19:14.001 race | +1.41% |
| Torey Mathews | 2021 | 25:41.001 race | 26:07.001 race | +1.69% |
| Davis Woolbert | 2021 | 18:24.001 race | 18:47.001 race | +2.08% |
| Evan Zhang | 2021 | 19:29.001 race | 19:58.001 race | +2.48% |
| Louis Chiasson | 2021 | 19:44.001 race | 20:15.001 race | +2.62% |
| Teddy Ellis | 2021 | 17:53.001 race | 18:24.001 race | +2.89% |
| Ellie Sullivan | 2021 | 25:45.001 race | 26:36.001 race | +3.30% |
| Sam Dunn | 2021 | 17:37.001 race | 18:15.001 race | +3.60% |
| Zoe Campbell | 2021 | 20:46.001 race | 21:37.001 race | +4.09% |
| Kevin Farmer | 2021 | 20:35.001 race | 21:26.001 race | +4.13% |
| Andrew Bittner | 2021 | 20:41.001 race | 21:35.001 race | +4.35% |
| Elliot Smith | 2021 | 19:53.001 race | 20:55.001 race | +5.20% |
| Sofia Mraz | 2021 | 23:05.001 race | 24:20.001 race | +5.42% |
| Matthew Abati | 2021 | 19:42.001 race | 21:23.001 race | +8.54% |