Sun, Oct 4, 2026
Dedham, MA
The course runs through Barnes Memorial Park in Dedham. The race supports the Dedham Education Foundation and its public schools, so the crowd skews local, with plenty of families in the mix. Age-group awards go out after the race, and there is food, drink, and music at the finish area.
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Going by the 2025 results, this is a small, friendly field, with a competitive front end and a big recreational middle.
3.1 Miles · 2025 results
Top 3: Henry Humphreys (17:12) · JACOB BERMAN (18:00) · Eric Sullivan (18:10)
The DEF Dash 5K has been held every year since at least 2019. That is as far back as RunSignup's records for this race go, so it may well be older.
Enter a finish time to see where it lands against the most recent 3.1 Miles results.
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
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Almost certainly not. Half the 3.1 Miles field finished slower than 30:28, and the last recorded finisher came in around 1:02:01, so there is a long tail of runners behind the middle of the pack. Most fields are far slower than people expect.
A field of 244 is big enough that you will have company at your pace without feeling lost in a crowd. There is no qualifying time, and the finish-time spread above shows how varied the field really is. If it is your first 3.1 Miles, that spread matters more than the winner's time.
The 3.1 Miles winner ran 17:12 while the median finisher took 30:28. That spread points to a mixed field, with a competitive front and a big recreational middle.
