Monsterdash - Denver

OCT
24
2026
A family-oriented Halloween themed run at Sloan's Lake in Denver on Oct 24, 2026, offering 5k, 10k and a kids mile with costume contests, giveaways and a festival atmosphere. The flat lakeside course includes an aid station and mountain views.
Sat 24 Oct 2026
10 kilometers 5 kilometers

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MonsterDASH Run Denver : Sloan's Lake, Oct 24, 2026

MonsterDASH Run in Denver is a family-oriented, themed running event held at Sloan's Lake. The event is part of the MonsterDASH series and changes its theme each year, with past themes including Dracula, witches, mummies and zombies. Organizers describe the event as a festival-style run with music, raffles, large blow-ups, selfie opportunities and a sports expo with snacks and freebies.

Distances offered

  • 5k one loop around Sloan's Lake, flat and fast.
  • 10k two lake loops with a small additional add-on.
  • Kids 1 Mile for younger participants.

The 5k course circles Sloan's Lake and provides views of the Rocky Mountains. One aid station is located on the course offering water, sports drink and snacks. Many participants wear costumes; about 70% of runners arrive in costume and there are multiple costume contests and age-group prizes.

Runners receive event items that vary by distance and age group. Typical giveaways include a running buff, pint glass, finisher medal, cotton candy, popcorn and other snacks. Kids receive a bib, glow sticks, a kids medal and a kids hot dog and drink. Entry fees are listed by registration period with early, regular and late rates for the 5k and 10k and a lower fee structure for the kids mile. Visit the organization's website for the most recent information.

10 km
10k Running Race
5 km
5k Running Race
Kids 1 Mile Race
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