Saturday, August 8th, 2026
14982 W 69th Ave, Arvada CO
Half · 10K · 5K
60–87°F · low rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
66–98°F
dry
2024
62–77°F
rain
2023
52–81°F
dry
2022
61–87°F
dry
2021
57–91°F
dry
2020
65–94°F
dry
2019
64–84°F
rain
2018
58–81°F
dry
2017
54–72°F
dry
2016
58–86°F
dry
Best months to race in Colorado →
About this race
As the summer mornings start to cool, join us for a fantastic end-of-season celebration at our 14th annual Runapalooza! From our new venue at Colorado Tap House, you'll have the chance to tackle relatively gentle 5K and 10K courses that go along the acclaimed Ralston Creek Trail, taking you through shady, creekside beaty along Arvada's picturesque open spaces and charming golf course communities. Or our challenging half marathon course that combines the beauty of the Ralston Creek Trail with the challenging Blunn Reservoir loop with its gorgeous Denver and Front Range views. This event, paired with its Endless Series' counterpart Mardi Crawl, offers a can't-miss opportunity to experience the best of what Colorado has to offer!
Course map
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