raceIQ

Running races in Westminster, CO

12 upcoming running races in Westminster, CO — 10Ks and half marathons, with dates and field depth before you enter.

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Most competitive fields

Ranked by how fast the front of the field ran in recent editions, compared with every race we track at that distance.

  1. 1All-Out Beat the HeatSat, Apr 24Westminster5K10KHalf marathon Competitive
  2. 2All-Out Fa La LaSat, Dec 5Westminster5K10KHalf marathon Competitive
  3. 3Westy Half & 5kSun, Oct 10Westminster5KHalf marathon Competitive
  4. 4All-Out Fall FestSat, Sep 18Westminster5K10KHalf marathon Competitive
  5. 5Pioneer Prairie Dog Half, 10k & 5kSun, Aug 22Westminster5K10KHalf marathon Competitive

Which of these could you place in? raceIQ ranks them by where your pace would finish, in your age group and gender.

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December 2026

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October 2027