Dog Days of Summer
Longmont, CO
Sat, Aug 7, 2027
In 300 days · Sat, Aug 7, 2027
Don't let race day sneak up
One email during race week. That's it.
Saturday, August 7th, 2027
Dawson Park @ Lake McIntosh, Longmont CO
59–85°F · some rain risk
See last 10 years
On this date: rain 4 of the last 10 years
2025
63–98°F
dry
2024
61–71°F
rain
2023
52–78°F
rain
2022
61–82°F
dry
2021
53–89°F
dry
2020
66–93°F
dry
2019
62–82°F
rain
2018
58–81°F
dry
2017
53–73°F
rain
2016
60–87°F
dry
Best months to race in Colorado →
Race week?
Don't forget the small stuff.
Gels, anti-chafe, throwaway layers — the checklist runners re-buy every race.
Race-day forecast · Saturday, Aug 7
Cloudy · 62–100°F
Saturday, Aug 7starts near 62°F · 8% chance of rain · wind up to 21 mph
About this race
Come join us on August 8, 2026 for a race around the entirety of beautiful Lake McIntosh! This 3.5 mile race is a half paved/half dirt course surrounded by wonderful mountain views, vast farmlands, and beautiful aquatic wildlife! Gather at Dawson Neighborhood park near the pirate ship playground where you will find an assortment of vendors, music, games, and fun! All are welcome to participate in this awesome event! Doggos are encouraged to participate!
We are SO excited to announce the partnership with our Charitable Sponsor, The Longmont Humane Society! By joining the optional Wag Wave in your registration, the added price to your ticket will be directly donated to support the wellbeing of all animals sheltered at our local humane society! We will also be donating a portion of all proceeds to the shelter to further support all of our four legged friends!
Course map
Train with a club
Run clubs near Longmont to train with before race day.
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.