Adrenaline Night Runs
Fountain Hills, United States • 23 May 2026
Event
The Adrenaline Night Runs take place Saturday, May 23, 2026, at McDowell Mountain Regional Park in Fountain Hills, Arizona (16300 McDowell Mountain Park Dr.). The event offers multiple trail distances staged from the park:
- 50K
- 25K
- 15K
- 10K
- 6K
Registration is tiered by date and closes on Mon, May 18 at 11:59 PM MT. Race entries are non-refundable and non-transferable. A race goody is not guaranteed for registrations after May 8.
Course and logistics
All courses use rolling desert single track with long and short loops that join to return along the Shallmo Trail. Trails routed include Escondido, Cinch, and Scenic Ridge. The 50K uses repeated loops and has a 10-hour time limit with a final cutoff at 5:00 AM; specific loop cutoffs are published for later laps. Crews are allowed at the start/finish; pacers are permitted only for 50K runners beginning on the fourth loop (around 40K). A drop-bag area is provided at the start/finish.
Aid is provided at a fully stocked start/finish station and a remote Escondido aid station; a Pemberton location is water-only. Typical offerings include water, ice, electrolyte drink, salty and sweet snacks, fruit, PB&J, bean rollups, and hot food (quesadillas, grilled cheese). This is a CUPLESS event; bring a reusable cup or purchase one on site.
Additional notes: park entry charges $7 per vehicle, on-site camping is available, pets are not allowed on course and must be leashed if present, and the event will use chip timing and live split tracking. Visit the organization's website for the most recent information.