Cambridge Half Marathon + 5K
Sat, Oct 31 · in 4 days Cambridge, MA
Half marathonHalf marathon5K5K
Race website & registration Your chances
Where would you finish?
Enter your race pace or connect Strava, and raceIQ compares you with this race's past finishers in your age group and gender.
See your predicted place7th
of ~140
Age group
Finish times
From the 2025 results.
| Distance | Finishers | Winner | Top 5% | Top 25% | Median |
|---|---|---|---|---|---|
| 5K | 1,072 | 14:41 | 19:47 | 25:46 | 29:20 |
Field strength
5KVery competitive
Faster up front than 87% of the 5K races we track, based on 2,866 finishers over 3 editions.
Half marathonVery competitive
Faster up front than 94% of the half marathon races we track, based on 21,764 finishers over 3 editions.
Finishers by year
| Year | 5K | Half marathon |
|---|---|---|
| 2025 | 1,073 | 9,312 |
| 2024 | 1,165 | 7,309 |
| 2023 | 628 | 5,143 |
| 2022 | — | 3,959 |
| 2021 | — | 2,908 |
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