All-Out Runapalooza
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!
Join fellow runners on August 8, 2026 for the All-Out Runapalooza. It's a fantastic Half-Marathon, 10K, 5K featuring a flat and fast course in Arvada.
Pick your distance
Running
Half Marathon
Half marathon athletes will head out of the Colorado Tap House then east on Ralston Creek Trail for a short dogleg and aid station, then head westbound before running the clockwise Blunn Reservoir loop. 9 opportunities to fuel up (+5 toilets).
10K
10K athletes will head out of the Colorado Tap House then west on Ralston Creek Trail. As an out & back course, they will run 3.1 miles before turning around to return the way they came. 4 opportunities to fuel up (+2 toilets).
5K
10K athletes will head out of the Colorado Tap House then west on Ralston Creek Trail. As an out & back course, they will run 1.55 miles before turning around to return the way they came. 2 opportunities to fuel up (+2 toilets).
VIRTUAL Half Marathon
Participate virtually! Get all of the SWAG, including a finishers medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get distance credit towards the Run Amok Championship!
VIRTUAL 10K
Participate virtually! Get all of the SWAG, including a finishers medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get distance credit towards the Run Amok Championship!
VIRTUAL 5K
Participate virtually! Get all of the SWAG, including a finishers medal, shipped to you the week after the event, maintain eligibility for series finisher award and alumni brag tags, and get distance credit towards the Run Amok Championship!
Weather Overview
These values represent the 13-year monthly averages for August in Arvada.
About Arvada
All-Out Runapalooza takes place in Arvada, Colorado, United States. The local timezone is America/Denver.
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🏃 Plan Your Next Race in Arvada
Find upcoming events by distance:
- Arvada 5K Races Best Arvada routes for beginners and speed work.
- 10K Run Events in Arvada The most popular local distance in Colorado.
- Arvada Half Marathons Top-rated 21.1K courses in the Arvada area.
- Arvada Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
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