Pairwise course analysis
RL 5K Coursevs.Noble and Greenough School 5K
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
These courses run about even
+0.07%
Roughly 0.8 seconds slower for a 20:00 runner
Paired observations
172
Deep evidence
Median difference
-0.63%
Middle runner-season comparison
Overall estimate
+0.07%
Network-adjusted course estimate
Middle 50% range
+4.82%
Observed variation (IQR)
Direction and magnitude
Relative course speed
Noble and Greenough School 5K fasterEvenNoble and Greenough School 5K slower
Confidence interval
-0.81% to +0.82%
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 | RL 5K Course | Noble and Greenough School 5K | Difference |
|---|---|---|---|---|
| E.J. Hemingway | 2022 | 32:47.001 race | 29:09.001 race | -11.08% |
| Martin Erath | 2022 | 25:34.001 race | 22:51.001 race | -10.63% |
| Abner Machuca Diaz | 2024 | 23:23.001 race | 21:13.001 race | -9.27% |
| Lousia Corbett | 2024 | 27:35.001 race | 25:11.001 race | -8.70% |
| Max Kesselheim | 2024 | 21:26.002 races | 19:35.001 race | -8.63% |
| James Kerr | 2024 | 18:37.002 races | 17:01.001 race | -8.59% |
| Max Kesselheim | 2025 | 21:42.001 race | 19:58.001 race | -7.99% |
| Levi Harrison | 2024 | 18:48.002 races | 17:18.001 race | -7.98% |
| Temi Martins-Desumu | 2024 | 28:40.002 races | 26:23.001 race | -7.97% |
| Nick Glaeser | 2024 | 28:11.002 races | 26:05.001 race | -7.45% |
| Lukas Leibisch | 2024 | 23:49.001 race | 22:03.001 race | -7.42% |
| Denmark Chriunga | 2024 | 33:40.001 race | 31:11.001 race | -7.38% |
| Wes Shaller | 2024 | 22:40.001 race | 21:08.001 race | -6.76% |
| Liam Walsh | 2024 | 18:36.002 races | 17:24.001 race | -6.45% |
| Toby Harrison | 2024 | 20:20.002 races | 19:02.001 race | -6.39% |
| Isaac Scribner | 2022 | 22:50.001 race | 21:34.001 race | -5.55% |
| Jake Rosenfeld | 2024 | 25:18.001 race | 23:55.001 race | -5.47% |
| Oliver Colbert | 2025 | 24:25.001 race | 23:09.001 race | -5.19% |
| Peter Favero | 2022 | 19:47.001 race | 18:46.001 race | -5.14% |
| Toby Harrison | 2025 | 20:07.001 race | 19:10.001 race | -4.72% |
| Justin Lin | 2024 | 26:02.001 race | 24:50.001 race | -4.61% |
| Ezra Klauber | 2024 | 18:36.002 races | 17:45.001 race | -4.57% |
| Mitchell Ladd | 2022 | 24:05.002 races | 23:00.001 race | -4.50% |
| Darian Estrada | 2024 | 26:47.002 races | 25:39.001 race | -4.23% |
| Paul Tompros | 2025 | 26:24.001 race | 25:18.001 race | -4.17% |
| Alexander Wasynczuk | 2024 | 21:33.001 race | 20:41.001 race | -4.02% |
| Luke Zhang | 2022 | 22:31.001 race | 21:37.001 race | -4.00% |
| Brian Luppy | 2021 | 21:43.001 race | 20:52.001 race | -3.91% |
| Torey Mathews | 2024 | 27:49.001 race | 26:44.001 race | -3.89% |
| Tim Cassidy | 2022 | 21:05.001 race | 20:16.001 race | -3.87% |
| Alex Young | 2024 | 19:32.001 race | 18:49.001 race | -3.67% |
| Ernesto Ortiz | 2024 | 24:55.001 race | 24:01.001 race | -3.61% |
| Riley Alqueza | 2025 | 23:42.001 race | 22:51.001 race | -3.59% |
| Jason Minicozzi | 2024 | 17:53.001 race | 17:16.001 race | -3.45% |
| Lincoln Hyatt | 2025 | 18:54.001 race | 18:16.001 race | -3.35% |
| Owen Barry | 2022 | 20:47.001 race | 20:06.001 race | -3.29% |
| Alex Kovtunenko | 2024 | 24:03.001 race | 23:17.001 race | -3.19% |
| Eric Archerman | 2024 | 19:27.002 races | 18:51.001 race | -3.08% |
| Colin Bradley | 2025 | 19:28.001 race | 18:52.001 race | -3.08% |
| Catherine Bain | 2022 | 24:26.001 race | 23:41.001 race | -3.07% |
| Grant Coldren | 2019 | 21:49.001 race | 21:10.001 race | -2.98% |
| Sixing Wang | 2022 | 25:38.001 race | 24:53.001 race | -2.93% |
| Antonio Ometeotl | 2022 | 22:16.001 race | 21:37.001 race | -2.92% |
| Cameron Baylor | 2022 | 25:05.001 race | 24:23.001 race | -2.79% |
| Luis Sosa Espinal | 2024 | 22:28.001 race | 21:51.001 race | -2.74% |
| Vincent Gilbert | 2022 | 24:43.001 race | 24:04.001 race | -2.63% |
| Nick Costantino | 2022 | 19:14.001 race | 18:44.001 race | -2.60% |
| Adair Johnson | 2024 | 25:12.001 race | 24:33.001 race | -2.58% |
| David Yang | 2022 | 23:19.001 race | 22:45.001 race | -2.43% |
| Temi Martins Dosumu | 2025 | 28:08.001 race | 27:27.001 race | -2.43% |
| Terry Qi | 2022 | 24:22.001 race | 23:47.001 race | -2.39% |
| Liam Walsh | 2025 | 18:06.001 race | 17:41.001 race | -2.30% |
| Ameer Hasan | 2025 | 24:54.001 race | 24:20.001 race | -2.28% |
| Anton Balyuk | 2022 | 22:13.001 race | 21:43.001 race | -2.25% |
| Calvin Reid | 2024 | 19:23.002 races | 18:57.001 race | -2.24% |
| Lincoln Hyatt | 2024 | 18:24.002 races | 18:00.001 race | -2.17% |
| John Joyce | 2024 | 17:59.001 race | 17:36.001 race | -2.13% |
| Antonio Martinez | 2024 | 21:15.001 race | 20:48.001 race | -2.12% |
| Sawyer Rogers | 2022 | 26:23.001 race | 25:50.001 race | -2.08% |
| Vedant Deokar | 2022 | 18:30.001 race | 18:07.001 race | -2.07% |
| Justin Jang | 2024 | 19:51.001 race | 19:27.001 race | -2.02% |
| William Nass | 2024 | 20:44.001 race | 20:19.001 race | -2.01% |
| Ella Coffin | 2022 | 25:53.001 race | 25:22.001 race | -2.00% |
| Fin Reichard | 2024 | 20:20.001 race | 19:56.001 race | -1.97% |
| Alexander Wasynczuk | 2023 | 21:17.001 race | 20:53.001 race | -1.88% |
| Katie Tantillo | 2022 | 24:13.001 race | 23:47.001 race | -1.79% |
| Raymond Li | 2022 | 21:26.001 race | 21:03.001 race | -1.79% |
| Xavier Smith | 2022 | 26:35.001 race | 26:08.001 race | -1.69% |
| Cassidy Bruno | 2022 | 23:04.001 race | 22:41.001 race | -1.66% |
| Maggie Cabot | 2022 | 26:08.001 race | 25:42.001 race | -1.66% |
| Eric Archerman | 2025 | 18:41.001 race | 18:23.001 race | -1.61% |
| Jack Connors | 2021 | 18:34.001 race | 18:17.001 race | -1.53% |
| Avish Kumar | 2025 | 25:53.001 race | 25:30.001 race | -1.48% |
| Sadie Millett | 2022 | 21:48.001 race | 21:29.001 race | -1.45% |
| Olessia Zhevago | 2022 | 29:16.001 race | 28:53.001 race | -1.31% |
| Ben Romano | 2025 | 21:49.001 race | 21:34.001 race | -1.15% |
| Anika Ata | 2022 | 23:57.001 race | 23:41.001 race | -1.11% |
| David Comander | 2024 | 22:51.002 races | 22:37.001 race | -1.02% |
| James Kerr | 2025 | 16:47.001 race | 16:37.001 race | -0.99% |
| Brendan Reichard | 2024 | 22:01.002 races | 21:48.001 race | -0.98% |
| John Joyce | 2023 | 17:39.001 race | 17:29.001 race | -0.94% |
| Oliver Colbert | 2024 | 21:49.002 races | 21:37.001 race | -0.92% |
| Sebastian Culleton | 2023 | 18:21.001 race | 18:11.001 race | -0.91% |
| Leighton Glass | 2022 | 23:15.001 race | 23:03.001 race | -0.86% |
| Ryan Connolly | 2024 | 20:39.001 race | 20:30.001 race | -0.73% |
| Joseph Koh | 2024 | 19:44.001 race | 19:36.001 race | -0.68% |
| Julian Vidal | 2025 | 22:32.001 race | 22:24.001 race | -0.59% |
| Luke Taylor | 2022 | 19:07.001 race | 19:01.001 race | -0.52% |
| Nick Glaeser | 2025 | 24:20.001 race | 24:14.001 race | -0.41% |
| Emlyn Joseph | 2024 | 20:50.001 race | 20:45.001 race | -0.40% |
| Maddie Stearns | 2019 | 25:29.001 race | 25:23.001 race | -0.39% |
| Meg Dugan | 2019 | 21:19.001 race | 21:16.001 race | -0.23% |
| Henry Horvath | 2022 | 19:08.001 race | 19:06.001 race | -0.17% |
| Elizabeth De Ramel | 2024 | 23:42.001 race | 23:40.001 race | -0.14% |
| Florence Morlock | 2022 | 26:23.001 race | 26:22.001 race | -0.06% |
| Katie Wipf | 2019 | 24:28.001 race | 24:29.001 race | +0.07% |
| Kailyn Love | 2024 | 23:43.001 race | 23:45.001 race | +0.14% |
| Tommy Gaffey | 2019 | 17:46.001 race | 17:48.001 race | +0.19% |
| Chris Thompson | 2023 | 20:00.001 race | 20:04.001 race | +0.33% |
| Noah Douglas | 2021 | 19:24.001 race | 19:28.004 races | +0.34% |
| Carter Bartel | 2021 | 19:06.001 race | 19:10.004 races | +0.35% |
| Mike Gao | 2024 | 26:41.001 race | 26:48.001 race | +0.44% |
| Lilly Bradley | 2019 | 21:04.001 race | 21:10.001 race | +0.47% |
| Joseph Koh | 2023 | 20:43.001 race | 20:49.001 race | +0.48% |
| Ben Guenther | 2021 | 19:11.001 race | 19:18.003 races | +0.61% |
| Khalid Abdulle | 2021 | 19:33.001 race | 19:41.003 races | +0.68% |
| Armand Matijasevic | 2024 | 20:50.001 race | 20:59.001 race | +0.72% |
| Arnav Harve | 2021 | 20:21.001 race | 20:32.003 races | +0.90% |
| Samantha Noonan | 2019 | 27:03.001 race | 27:18.001 race | +0.92% |
| Ethan Anderson | 2021 | 19:35.001 race | 19:46.003 races | +0.94% |
| Phoebe Quinn | 2024 | 23:55.001 race | 24:09.001 race | +0.98% |
| Matt Wing | 2022 | 17:03.001 race | 17:13.001 race | +0.98% |
| Sam Millay | 2021 | 19:40.001 race | 19:52.004 races | +1.02% |
| Richard Federico III | 2025 | 17:40.001 race | 17:52.001 race | +1.13% |
| Margot Murphy-Hara | 2024 | 25:00.001 race | 25:17.001 race | +1.13% |
| Jason Louie | 2024 | 19:02.001 race | 19:16.001 race | +1.23% |
| Emilia Raviola | 2024 | 23:54.001 race | 24:12.001 race | +1.26% |
| Sophia Lee | 2021 | 25:13.001 race | 25:35.004 races | +1.45% |
| William Hansen | 2021 | 20:35.001 race | 20:53.001 race | +1.46% |
| Charlotte Hayward | 2021 | 23:13.001 race | 23:34.005 races | +1.51% |
| David Hermanson | 2021 | 19:28.001 race | 19:47.003 races | +1.63% |
| Will McLane | 2021 | 19:26.001 race | 19:45.004 races | +1.63% |
| Felix Stuart | 2024 | 21:28.001 race | 21:49.001 race | +1.63% |
| Kajsa Harrington | 2021 | 23:54.001 race | 24:19.003 races | +1.74% |
| Aidan Humphreys | 2019 | 21:00.001 race | 21:22.001 race | +1.75% |
| Samuel Hinman | 2021 | 18:29.001 race | 18:49.001 race | +1.80% |
| Hans Vigener | 2021 | 19:14.001 race | 19:35.001 race | +1.82% |
| Alena Mulhern | 2019 | 26:24.001 race | 26:53.001 race | +1.83% |
| Jack Butterworth | 2024 | 20:44.001 race | 21:07.001 race | +1.85% |
| Will Frazier | 2024 | 21:06.001 race | 21:30.001 race | +1.90% |
| Jack Connors | 2023 | 17:43.001 race | 18:04.001 race | +1.98% |
| Taylor Holmes | 2023 | 20:32.001 race | 20:57.001 race | +2.03% |
| James Joyce | 2021 | 22:05.001 race | 22:32.001 race | +2.04% |
| Jessie Shi | 2024 | 26:30.001 race | 27:03.001 race | +2.08% |
| Sophia Hansen | 2019 | 22:37.001 race | 23:06.001 race | +2.14% |
| Sophie Majernik | 2021 | 24:20.001 race | 24:52.004 races | +2.19% |
| Ben Luo | 2022 | 21:04.001 race | 21:35.001 race | +2.45% |
| Kylie Bogar | 2019 | 28:56.001 race | 29:41.001 race | +2.59% |
| Isaac Wu | 2024 | 22:30.001 race | 23:05.001 race | +2.59% |
| Kailin Shi | 2024 | 27:01.001 race | 27:45.001 race | +2.71% |
| Eloise Daniello | 2019 | 22:40.001 race | 23:17.001 race | +2.72% |
| Joe Jia | 2024 | 22:04.001 race | 22:44.001 race | +3.02% |
| A Raycroft | 2019 | 29:03.001 race | 29:56.001 race | +3.04% |
| Zifu Song | 2024 | 22:26.001 race | 23:07.001 race | +3.05% |
| Cormac Anderson | 2024 | 23:49.001 race | 24:36.001 race | +3.29% |
| Erin Farmer | 2019 | 32:31.001 race | 33:41.001 race | +3.59% |
| Zidan Graham | 2024 | 24:51.001 race | 25:45.001 race | +3.62% |
| Esme Campbell | 2024 | 20:46.001 race | 21:38.001 race | +4.17% |
| Masan Porter | 2024 | 22:03.001 race | 23:00.001 race | +4.31% |
| Lindsay Popeo | 2021 | 23:29.001 race | 24:31.003 races | +4.40% |
| Gigi Gillard | 2019 | 32:05.001 race | 33:31.001 race | +4.47% |
| Molly Epker | 2021 | 23:52.001 race | 24:59.003 races | +4.68% |
| Ching Hei (Andre) Leung | 2024 | 23:06.001 race | 24:13.001 race | +4.83% |
| Avish Kumar | 2024 | 25:09.002 races | 26:24.001 race | +4.97% |
| Jace LiVigni | 2024 | 19:10.001 race | 20:13.001 race | +5.48% |
| Virginia Thompson | 2019 | 28:08.001 race | 29:51.001 race | +6.10% |
| Ally Gilbert | 2019 | 27:09.001 race | 28:55.001 race | +6.51% |
| Wesley Xue | 2024 | 24:54.001 race | 26:41.001 race | +7.16% |
| Sid Chopra | 2025 | 29:14.001 race | 31:23.001 race | +7.35% |
| Emmett Burghardt | 2024 | 21:29.001 race | 23:11.001 race | +7.91% |
| Hudson Li | 2024 | 22:45.001 race | 24:35.001 race | +8.06% |
| Jasper Hyatt | 2025 | 22:32.001 race | 24:52.001 race | +10.36% |
| Lindsay Saunders | 2021 | 24:08.001 race | 26:39.003 races | +10.43% |
| Jonah Rothman | 2019 | 24:51.001 race | 27:42.001 race | +11.47% |
| G Quealy | 2019 | 27:47.001 race | 30:59.001 race | +11.52% |
| Chris Peng | 2024 | 24:57.001 race | 28:12.001 race | +13.03% |
| Emily English | 2019 | 26:34.001 race | 30:08.001 race | +13.43% |
| Grace Stanton | 2019 | 25:26.001 race | 29:02.001 race | +14.15% |
| Alice Wang | 2024 | 25:28.001 race | 29:20.001 race | +15.18% |
| Jacquelyn Gao | 2022 | 25:48.001 race | 30:59.001 race | +20.09% |
| Katie Chen | 2022 | 25:57.001 race | 32:29.001 race | +25.18% |
| Gaby Alonso | 2022 | 25:08.001 race | 32:47.001 race | +30.44% |