Pairwise course analysis
Bouchard Park 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
+0.66%
Roughly 7.9 seconds slower for a 20:00 runner
Paired observations
195
Deep evidence
Median difference
+0.04%
Middle runner-season comparison
Overall estimate
+0.66%
Network-adjusted course estimate
Middle 50% range
+4.50%
Observed variation (IQR)
Direction and magnitude
Relative course speed
Groton School fasterEvenGroton School slower
Confidence interval
-0.37% to +0.87%
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 | Bouchard Park 5K | Groton School | Difference |
|---|---|---|---|---|
| Oliver Colbert | 2025 | 25:09.001 race | 21:19.001 race | -15.24% |
| CJ Briere | 2025 | 22:52.501 race | 19:48.001 race | -13.44% |
| Oscar Caprano | 2019 | 24:47.201 race | 21:43.001 race | -12.39% |
| Nate Hagerty | 2025 | 20:36.601 race | 18:07.001 race | -12.10% |
| Keira Amick | 2025 | 30:31.401 race | 27:07.001 race | -11.16% |
| George Yerid | 2025 | 23:57.901 race | 21:38.001 race | -9.73% |
| Emmett Kellogg | 2025 | 26:35.801 race | 24:34.001 race | -7.63% |
| Miles Johnson | 2025 | 25:04.301 race | 23:16.001 race | -7.20% |
| Peter Duhamel | 2025 | 19:17.001 race | 17:57.001 race | -6.91% |
| Zane Davis | 2019 | 23:43.301 race | 22:12.001 race | -6.41% |
| Priya Devavaeam | 2019 | 26:46.701 race | 25:13.001 race | -5.83% |
| Wesley Lindstrom-Chalpin | 2022 | 26:09.001 race | 24:42.001 race | -5.54% |
| Daniel Wang | 2019 | 25:12.401 race | 24:00.001 race | -4.79% |
| Amy Li | 2019 | 30:59.101 race | 29:40.001 race | -4.25% |
| Mathew Hong | 2019 | 19:24.801 race | 18:36.001 race | -4.19% |
| Andrew Monsalve | 2019 | 21:30.601 race | 20:37.001 race | -4.15% |
| Peter Gnazzo | 2025 | 24:00.701 race | 23:02.001 race | -4.07% |
| Corrine Waters | 2019 | 22:26.901 race | 21:33.001 race | -4.00% |
| Ines Levy | 2019 | 22:23.401 race | 21:30.001 race | -3.97% |
| Julia Maimones | 2019 | 23:49.501 race | 22:53.001 race | -3.95% |
| Louis Levy | 2019 | 21:21.901 race | 20:32.001 race | -3.89% |
| Nicholas Tao | 2019 | 20:27.901 race | 19:43.001 race | -3.66% |
| Phoebe Lu | 2019 | 25:52.301 race | 24:56.001 race | -3.63% |
| Cordelia Loomis | 2019 | 24:08.901 race | 23:18.001 race | -3.51% |
| Sam Modur | 2019 | 23:30.301 race | 22:41.001 race | -3.50% |
| Charles Chen | 2019 | 22:31.101 race | 21:45.001 race | -3.41% |
| Rosie Qin | 2019 | 26:04.801 race | 25:12.001 race | -3.37% |
| Alex Wu | 2019 | 18:39.801 race | 18:03.001 race | -3.29% |
| Shreya Jain | 2019 | 28:25.901 race | 27:30.001 race | -3.28% |
| Abigail Rabieh | 2019 | 23:53.801 race | 23:08.001 race | -3.19% |
| Ellie Berman | 2019 | 24:20.701 race | 23:35.001 race | -3.13% |
| Cameron Regonini | 2025 | 22:05.601 race | 21:26.001 race | -2.99% |
| Maanasi Chintamani | 2019 | 25:54.301 race | 25:08.001 race | -2.98% |
| Jackson Pagan | 2022 | 19:11.001 race | 18:37.001 race | -2.95% |
| Quinn Mason | 2025 | 21:21.601 race | 20:47.001 race | -2.70% |
| Claire Hackel | 2025 | 21:33.101 race | 20:59.001 race | -2.64% |
| Ethan Chang | 2019 | 25:06.601 race | 24:27.001 race | -2.63% |
| Alexander Behn | 2022 | 19:14.001 race | 18:44.001 race | -2.60% |
| Somers Estwanik | 2025 | 21:07.101 race | 20:36.001 race | -2.45% |
| Konstantin Lukin-Yelin | 2019 | 19:11.701 race | 18:45.001 race | -2.32% |
| Katherine Hardy | 2025 | 31:44.901 race | 31:02.001 race | -2.25% |
| Adam Ewing | 2019 | 20:48.601 race | 20:22.001 race | -2.13% |
| John Friedmann | 2025 | 23:40.201 race | 23:10.001 race | -2.13% |
| Michael Bobo | 2022 | 21:16.001 race | 20:49.001 race | -2.12% |
| Ruby Massengale | 2019 | 28:14.601 race | 27:39.001 race | -2.10% |
| Eleanor Lial | 2025 | 20:08.101 race | 19:43.001 race | -2.08% |
| Branford Chen | 2025 | 21:09.301 race | 20:43.001 race | -2.07% |
| Andrew Bittner | 2022 | 20:16.001 race | 19:51.001 race | -2.06% |
| Ella Cuccia | 2025 | 22:51.401 race | 22:24.001 race | -2.00% |
| Jack Kastner | 2022 | 21:59.001 race | 21:33.001 race | -1.97% |
| Alex Avram | 2019 | 25:23.201 race | 24:54.001 race | -1.92% |
| Neela Soni | 2025 | 26:18.801 race | 25:49.001 race | -1.89% |
| Gabby Walsh | 2019 | 20:49.001 race | 20:26.001 race | -1.84% |
| Miles Sandoski | 2022 | 17:17.001 race | 16:58.001 race | -1.83% |
| Ford Legg | 2019 | 21:02.601 race | 20:40.001 race | -1.79% |
| Nolan McNeil | 2023 | 21:42.001 race | 21:19.001 race | -1.77% |
| Mariam Craig | 2019 | 22:52.101 race | 22:28.001 race | -1.76% |
| Flynn Coyne | 2019 | 25:02.401 race | 24:38.001 race | -1.62% |
| Maia Soni | 2025 | 24:20.501 race | 23:57.001 race | -1.61% |
| Sam Rabieh | 2019 | 17:36.301 race | 17:20.001 race | -1.54% |
| William Trautz | 2022 | 17:36.001 race | 17:20.001 race | -1.52% |
| Elizabeth Gatto | 2019 | 25:58.301 race | 25:36.001 race | -1.43% |
| Cole Miller | 2025 | 18:25.801 race | 18:10.001 race | -1.43% |
| Lucas Liu | 2019 | 21:31.001 race | 21:13.001 race | -1.39% |
| Temi Martins Dosumu | 2025 | 25:01.401 race | 24:41.001 race | -1.36% |
| Jillian Robertson | 2019 | 21:59.601 race | 21:42.001 race | -1.33% |
| Meena Menon | 2019 | 21:58.101 race | 21:41.001 race | -1.30% |
| Lucy Walker | 2025 | 20:47.701 race | 20:32.001 race | -1.26% |
| Heng Leong | 2023 | 20:36.001 race | 20:21.001 race | -1.21% |
| Grace Luettgen | 2019 | 24:40.401 race | 24:23.001 race | -1.18% |
| Reuben Siegel | 2022 | 23:23.001 race | 23:07.001 race | -1.14% |
| Alan Wang | 2025 | 23:42.401 race | 23:29.001 race | -0.94% |
| Jason Minicozzi | 2023 | 18:18.001 race | 18:08.001 race | -0.91% |
| Kate Tarr | 2025 | 20:49.901 race | 20:40.001 race | -0.79% |
| Maksim Roman | 2022 | 19:17.001 race | 19:08.001 race | -0.78% |
| Kaia Eckton | 2019 | 28:27.501 race | 28:16.001 race | -0.67% |
| Juliana Lynch | 2023 | 25:35.001 race | 25:25.001 race | -0.65% |
| Adrian Tan | 2022 | 23:27.001 race | 23:18.001 race | -0.64% |
| Owen Richer | 2025 | 18:03.401 race | 17:57.001 race | -0.59% |
| Mia Peng | 2019 | 27:29.401 race | 27:20.001 race | -0.57% |
| Percy Gao | 2025 | 20:44.701 race | 20:38.001 race | -0.54% |
| Theo Goldman | 2019 | 21:15.501 race | 21:09.001 race | -0.51% |
| Lincoln Hyatt | 2025 | 17:42.801 race | 17:38.001 race | -0.45% |
| Paul Tompros | 2025 | 23:21.201 race | 23:15.001 race | -0.44% |
| Fitz Courtney | 2022 | 17:34.001 race | 17:30.001 race | -0.38% |
| Alana Brownstein | 2025 | 25:24.201 race | 25:19.001 race | -0.34% |
| Toby Harrison | 2025 | 18:07.501 race | 18:04.001 race | -0.32% |
| Flynn Coyne | 2022 | 22:24.001 race | 22:20.001 race | -0.30% |
| Peter Favero | 2019 | 18:43.201 race | 18:40.001 race | -0.28% |
| Catherine Maloney | 2025 | 25:43.101 race | 25:39.001 race | -0.27% |
| Emme Salyer | 2023 | 23:13.001 race | 23:10.001 race | -0.22% |
| Lucas Miller | 2025 | 18:19.201 race | 18:17.001 race | -0.20% |
| Aaron Stanger | 2022 | 17:42.001 race | 17:40.001 race | -0.19% |
| Alene Fernandes | 2019 | 21:42.201 race | 21:40.001 race | -0.17% |
| Megan Shi | 2019 | 31:42.201 race | 31:39.001 race | -0.17% |
| Amelia Stevens | 2019 | 24:16.001 race | 24:16.001 race | 0.00% |
| Caleb Krueger | 2019 | 18:43.801 race | 18:44.001 race | +0.02% |
| Nicole Fallon | 2025 | 22:39.401 race | 22:40.001 race | +0.04% |
| Juan-Pablo Fernandez Del Castillo | 2022 | 20:24.001 race | 20:25.001 race | +0.08% |
| Asher Parker-Sartori | 2019 | 24:46.701 race | 24:48.001 race | +0.09% |
| Julian Li | 2019 | 18:50.901 race | 18:52.001 race | +0.10% |
| Raymond Li | 2019 | 22:14.101 race | 22:16.001 race | +0.14% |
| Zan Danoff | 2019 | 18:35.801 race | 18:39.001 race | +0.29% |
| Julian Vidal | 2025 | 20:29.001 race | 20:34.001 race | +0.41% |
| Henry Ramanathan | 2022 | 19:22.001 race | 19:28.001 race | +0.52% |
| Ameer Hasan | 2025 | 22:04.101 race | 22:13.001 race | +0.67% |
| Tim Cassidy | 2019 | 24:31.501 race | 24:42.001 race | +0.71% |
| Matt Wing | 2019 | 17:49.201 race | 17:57.001 race | +0.73% |
| Davis Woolbert | 2022 | 17:40.001 race | 17:48.001 race | +0.75% |
| Jake Elkins | 2019 | 19:31.301 race | 19:41.001 race | +0.83% |
| Tobias Jonas | 2022 | 21:58.001 race | 22:10.001 race | +0.91% |
| Luca Mezzanotte | 2022 | 19:42.001 race | 19:54.001 race | +1.02% |
| Annabelle Rogers | 2019 | 21:21.901 race | 21:35.001 race | +1.02% |
| Grace Hu | 2019 | 21:04.301 race | 21:18.001 race | +1.08% |
| Ford Legg | 2022 | 19:40.001 race | 19:53.001 race | +1.10% |
| Arden Conine | 2019 | 24:28.701 race | 24:45.001 race | +1.11% |
| Linda Qin | 2019 | 29:01.401 race | 29:22.001 race | +1.18% |
| Ryan Loughran | 2019 | 18:34.601 race | 18:48.001 race | +1.20% |
| Cooper Austen | 2019 | 16:42.801 race | 16:55.001 race | +1.22% |
| Richard (Ricky) Li | 2019 | 21:52.801 race | 22:09.001 race | +1.23% |
| Max Kesselheim | 2025 | 18:37.601 race | 18:52.001 race | +1.29% |
| Josie Silk | 2019 | 22:00.501 race | 22:18.001 race | +1.33% |
| Jasper Hyatt | 2025 | 20:42.301 race | 21:00.001 race | +1.42% |
| Camille Destefano | 2023 | 27:35.001 race | 27:59.001 race | +1.45% |
| Ian Schmidek | 2022 | 26:25.001 race | 26:48.001 race | +1.45% |
| Rhaya Nestor | 2025 | 24:09.801 race | 24:31.001 race | +1.46% |
| Vedant Deokar | 2019 | 21:27.501 race | 21:47.001 race | +1.51% |
| Ben Luo | 2019 | 21:45.401 race | 22:06.001 race | +1.58% |
| Stone Shen | 2019 | 19:44.701 race | 20:04.001 race | +1.63% |
| Sebastian Canizares | 2019 | 21:41.101 race | 22:03.001 race | +1.68% |
| Austin Reid | 2025 | 18:39.101 race | 18:58.001 race | +1.69% |
| Joshua Curhan | 2022 | 19:17.001 race | 19:37.001 race | +1.73% |
| Quinn McCaffrey | 2025 | 21:25.701 race | 21:49.001 race | +1.81% |
| Nick Glaeser | 2025 | 22:08.601 race | 22:34.001 race | +1.91% |
| Jonathan Andreoli | 2022 | 23:48.001 race | 24:16.001 race | +1.96% |
| Alex Young | 2023 | 17:50.001 race | 18:11.001 race | +1.96% |
| Eloise Finley | 2025 | 24:21.801 race | 24:51.001 race | +2.00% |
| Sid Chopra | 2025 | 28:45.301 race | 29:20.001 race | +2.01% |
| Colin Bradley | 2025 | 17:34.601 race | 17:56.001 race | +2.03% |
| Quinn Taylor | 2023 | 26:16.001 race | 26:49.001 race | +2.09% |
| David Xiong | 2022 | 19:06.001 race | 19:30.001 race | +2.09% |
| Nathaniel Voss | 2022 | 17:39.001 race | 18:02.001 race | +2.17% |
| Sean McLaughlin | 2019 | 19:43.501 race | 20:10.001 race | +2.24% |
| Caleb Stokes | 2025 | 22:09.201 race | 22:41.001 race | +2.39% |
| Parker Lewis-Pierce | 2022 | 22:52.001 race | 23:25.001 race | +2.41% |
| Pepper Taylor | 2023 | 25:35.001 race | 26:12.001 race | +2.41% |
| Alana Kramer-Gomez | 2022 | 21:50.001 race | 22:22.001 race | +2.44% |
| Nina Douge | 2019 | 22:10.001 race | 22:43.001 race | +2.48% |
| Justin Jang | 2023 | 18:27.001 race | 18:57.001 race | +2.71% |
| Michael Cheng | 2019 | 21:50.601 race | 22:29.001 race | +2.93% |
| Sam Blank | 2023 | 19:53.001 race | 20:28.001 race | +2.93% |
| Maya Sidhu | 2019 | 23:59.601 race | 24:42.001 race | +2.95% |
| Henry Horvath | 2019 | 20:27.901 race | 21:05.001 race | +3.02% |
| Gillian Griffin | 2025 | 23:48.101 race | 24:33.001 race | +3.14% |
| Caroline Kovacs | 2022 | 20:18.001 race | 20:58.001 race | +3.28% |
| Eliza Hirsch | 2019 | 38:28.001 race | 39:46.001 race | +3.38% |
| Julian Dai | 2019 | 23:11.201 race | 23:59.001 race | +3.44% |
| Christian Hernandez | 2022 | 22:37.001 race | 23:24.001 race | +3.46% |
| Liam Walsh | 2025 | 16:54.301 race | 17:30.001 race | +3.52% |
| Xander Starobin | 2019 | 24:53.101 race | 25:47.001 race | +3.61% |
| Sylvia Brennan | 2022 | 21:14.001 race | 22:00.001 race | +3.61% |
| Justine Lam | 2019 | 27:34.301 race | 28:35.001 race | +3.67% |
| Gavin Cassidy | 2019 | 20:03.501 race | 20:49.001 race | +3.78% |
| Richard Federico III | 2025 | 16:51.801 race | 17:31.001 race | +3.87% |
| Violet Safari | 2025 | 23:48.601 race | 24:46.001 race | +4.02% |
| Tim Guan | 2019 | 25:52.101 race | 26:56.001 race | +4.12% |
| Kathryn Martin | 2022 | 23:51.001 race | 24:53.001 race | +4.33% |
| Beckett Dubovik | 2022 | 21:02.001 race | 21:57.001 race | +4.36% |
| Jeremy Eaton | 2022 | 19:26.001 race | 20:17.001 race | +4.37% |
| Gabe Cooper | 2022 | 19:01.001 race | 19:51.001 race | +4.38% |
| Owen Dowden | 2019 | 25:34.501 race | 26:42.001 race | +4.40% |
| Oliver Mitchell | 2019 | 24:32.601 race | 25:38.001 race | +4.44% |
| Reagan Whitaker | 2023 | 23:35.001 race | 24:42.001 race | +4.73% |
| Carver Porter | 2022 | 19:00.001 race | 19:54.001 race | +4.74% |
| Sam Modur | 2022 | 20:36.001 race | 21:35.001 race | +4.77% |
| Alex Spindt | 2023 | 23:20.001 race | 24:29.001 race | +4.93% |
| Douglas Zhang | 2022 | 21:21.001 race | 22:29.001 race | +5.31% |
| Daniel Xie | 2022 | 20:57.001 race | 22:08.001 race | +5.65% |
| Grant Vensel | 2025 | 19:59.601 race | 21:11.001 race | +5.95% |
| Diego Abadie | 2022 | 19:42.001 race | 20:54.001 race | +6.09% |
| Gabrielle Martin | 2022 | 23:27.001 race | 24:55.001 race | +6.25% |
| Ty Wilschut | 2019 | 24:52.001 race | 26:27.001 race | +6.37% |
| Justin O'Toole | 2019 | 16:37.901 race | 17:49.001 race | +7.12% |
| Alison Leiva | 2023 | 30:41.001 race | 32:58.001 race | +7.44% |
| Walker Cox | 2022 | 21:38.001 race | 23:18.001 race | +7.70% |
| Lily Weinstein | 2019 | 32:25.401 race | 35:08.001 race | +8.36% |
| Ben Kaplan | 2022 | 23:53.001 race | 25:55.001 race | +8.51% |
| Charlie Zhang | 2022 | 22:06.001 race | 24:03.001 race | +8.82% |
| Audra Soni | 2022 | 22:32.001 race | 24:32.001 race | +8.88% |
| Alexander Cohen | 2022 | 23:24.001 race | 25:48.001 race | +10.26% |
| Andy Chefetz | 2019 | 24:33.101 race | 27:09.001 race | +10.58% |
| James Kerr | 2025 | 15:44.701 race | 17:30.001 race | +11.15% |
| Sebastian Southworth | 2022 | 22:20.001 race | 24:54.001 race | +11.49% |
| Keira McNeil | 2023 | 28:50.001 race | 32:55.001 race | +14.16% |
| Eliot Ragosa | 2019 | 30:03.801 race | 34:21.001 race | +14.26% |