Pairwise course analysis
Williston Northampton School 5Kvs.LA 5K Course
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
LA 5K Course runs slower
+0.92%
Roughly 11.1 seconds slower for a 20:00 runner
Paired observations
19
Developing evidence
Median difference
-0.93%
Middle runner-season comparison
Overall estimate
+0.92%
Network-adjusted course estimate
Middle 50% range
+3.06%
Observed variation (IQR)
Direction and magnitude
Relative course speed
Confidence interval
-1.97% to +0.26%
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 | Williston Northampton School 5K | LA 5K Course | Difference |
|---|---|---|---|---|
| James Fair | 2025 | 19:01.001 race | 18:14.001 race | -4.12% |
| Raphael Klauber | 2025 | 18:53.001 race | 18:07.001 race | -4.06% |
| Nahman Mack | 2025 | 18:48.001 race | 18:06.001 race | -3.72% |
| Alex Cai | 2025 | 21:00.001 race | 20:19.001 race | -3.25% |
| Warren Turner | 2025 | 20:59.001 race | 20:20.001 race | -3.10% |
| Tate Corcoran | 2025 | 19:30.001 race | 19:00.001 race | -2.56% |
| Ollie Smith | 2025 | 19:55.001 race | 19:37.001 race | -1.51% |
| Jonas Wilderman | 2025 | 18:59.001 race | 18:46.001 race | -1.14% |
| Emery Nordahl | 2025 | 19:35.001 race | 19:24.001 race | -0.94% |
| Jaden Huang | 2025 | 17:59.001 race | 17:49.001 race | -0.93% |
| Jayden Leung | 2025 | 19:04.001 race | 18:54.001 race | -0.87% |
| Justin Lee | 2025 | 19:17.001 race | 19:10.001 race | -0.61% |
| Tomas Hernandez | 2025 | 18:33.001 race | 18:30.001 race | -0.27% |
| Anders Ulrich | 2025 | 19:02.001 race | 19:01.001 race | -0.09% |
| Devin Reid | 2025 | 17:41.001 race | 17:45.001 race | +0.38% |
| William Johnson | 2025 | 19:32.001 race | 19:40.001 race | +0.68% |
| Will Grace | 2025 | 17:30.001 race | 17:42.001 race | +1.14% |
| Alex Cheng | 2025 | 16:27.001 race | 17:05.001 race | +3.85% |
| Henry McLane | 2025 | 16:35.001 race | 17:28.001 race | +5.33% |