Adventure Fitness Athletic Club

The Verdict on Adventure Fitness Athletic Club

A practical stop for visiting HYROX athletes who want group classes, a wide machine and free weight floor, and recovery tools at a modest drop-in price. Confirm the current class fee and open gym hours by phone before you go, because the official pages give conflicting per-class prices and no official open gym price.

Best for: Visiting HYROX athletes, Drop-in class users, Recovery sessions

Equipment & Climate

Dumbbells from 5 to 100 lb, kettlebells, barbells, squat racks, full cages, cable and selectorized machines, Smith machine, landmines, trap bars, Power Plates, TRX, battle ropes, resistance sleds, VersaClimbers, Helix machines, StairMaster, rowers, Jacob's Ladder, Airdyne bikes, and a climbing cave with a double auto-belay wall. No source describes floor space or cooling.

Schedule & Drop-In Rules

Gym hours: Monday to Friday 4am to 8pm, Saturday 5am to 2pm, Sunday 7am to 12pm. Classes run Monday through Saturday from early morning to evening (source 3). Open gym drop-in is listed weekdays 7am to 9am by a third-party Instagram post (source 7). Minimum age 14 to join, according to the gym FAQ. No source states a skill or fitness requirement for drop-ins.

Pricing Notes

Official pages list $25 per class for non-members (sources 1 and 4). Official source 5 snippet says $10 per class, which conflicts and is unresolved. Instagram post (source 7, third-party) reports a $20 open gym drop-in on weekdays 7am to 9am, or a $200 monthly open gym pass. Google AI overview (source 11, third-party) repeats those figures. These are not official and are not in price columns. Official membership pages (sources 2 and 3) name Gold and Silver tiers and list no prices. Guest passes and cryotherapy sessions are paid add-ons with no price given.

Coaching

Official site says certified trainers are on the floor at all times and lead the classes. Owner Susan Schaffner teaches Nordic Walking and runs a free bariatric support group. Class size and languages spoken are not stated.

Good to Know

Bariatric support group

Free to members and non-members, led by owner Susan Schaffner on the first Tuesday of each month^[4]

Guest passes

Available as a paid add-on; members may bring a guest, contact staff for details^[1]

Cryotherapy session

Whole-body session of about 3 minutes, sold as a paid add-on^[1]

Gym age minimum

People aged 14 and older can join^[1]

Gym history

Locally owned; official membership page says the gym has operated in Thornton since 2005^[3]

Open gym flex packs

Race-prep classes and open gym flex packs, with no membership required, per city research notes

Visitor Guide