Denver's Trail Fitness Gym · Est. 2019

Train
for the
Mountain.

Strength training, trail conditioning, and movement coaching built for athletes who take their fitness outside. Open 5 AM to 10 PM, every day of the year.

16,000
Square Feet
35+
Weekly Classes
6 Yrs
In Denver
5 AM
Opens Every Day
Weekly Schedule

Train
Strong.
Train
Outside.

Every class at MindTreks Fitness is led by a certified coach with real-world experience in trail running, alpine climbing, or competitive strength sports. We run barbell strength, trail conditioning, kettlebell circuits, mobility, and open lifting throughout the week.

All classes are included in every membership tier. Drop-in rates are available for visitors. Schedule runs on Mountain Time. Contact us about specialty clinics held monthly for trail athletes.

Time Monday Tuesday Wednesday Thursday Friday Saturday Sunday
5:30 AM Barbell StrengthCoach Torres Trail ConditioningCoach Brennan Barbell StrengthCoach Torres Trail ConditioningCoach Brennan Barbell StrengthCoach Torres Open LiftingStaff
7:00 AM Kettlebell CircuitCoach Reyes Mobility & RecoveryCoach Torres Kettlebell CircuitCoach Reyes Mobility & RecoveryCoach Torres Kettlebell CircuitCoach Reyes Trail ConditioningCoach Brennan Open LiftingStaff
12:00 PM Open LiftingStaff Barbell StrengthCoach Torres Open LiftingStaff Barbell StrengthCoach Torres Open LiftingStaff Kettlebell CircuitCoach Reyes Mobility & RecoveryCoach Torres
5:30 PM Trail ConditioningCoach Brennan Kettlebell CircuitCoach Reyes Trail ConditioningCoach Brennan Kettlebell CircuitCoach Reyes Trail ConditioningCoach Brennan
7:00 PM Barbell StrengthCoach Torres Trail ConditioningCoach Brennan Mobility & RecoveryCoach Torres Trail ConditioningCoach Brennan
The Coaching Staff
01
Marco Torres
Head Coach · Barbell Strength & Movement

Former collegiate track and field athlete and NSCA-certified strength coach with 10 years of coaching experience. Marco built the MindTreks programming system when the gym opened in 2019. He specializes in developing athletes who are strong, mobile, and capable across multiple outdoor disciplines.

NSCA-CSCS USA Weightlifting L1 FMS Level 2
02
Sienna Brennan
Trail Conditioning Coach

Competitive ultramarathon runner with seven finishes at 50-mile and 100-mile events across Colorado and Utah. Sienna designs and leads all trail conditioning programming at MindTreks, helping athletes build the specific strength and endurance needed for technical mountain terrain.

NASM-CPT RRCA Running Coach Wilderness First Aid
03
Luis Reyes
Kettlebell & Conditioning Coach

StrongFirst-certified kettlebell instructor and eight-year competitive CrossFit athlete. Luis runs the kettlebell circuit and conditioning sessions at MindTreks, focusing on the kind of general physical preparedness that translates directly to trail running, climbing approaches, and backcountry travel.

StrongFirst SFG II NASM-CPT CPR/AED

Membership Plans

All plans include full facility access and unlimited group classes. No initiation fees. Cancel anytime with 30 days notice.

Day Pass
$22 / day

Drop in anytime during staffed hours. Includes full facility access and one group class.

  • Full facility access
  • One group class included
  • Locker room & showers
  • No commitment required
Buy a Day Pass
Annual + Coaching
$139 / month

Annual membership with two personal coaching sessions per month. Built for serious athletes.

  • Everything in Monthly
  • 2 personal coaching sessions / month
  • Individualized trail programming
  • Priority class booking
  • Annual billing — save $216/year
Get Started

FAQ

Is MindTreks right for beginners?
Yes. We train athletes at every level, from people who have never touched a barbell to competitive ultrarunners. Every new member gets a free orientation session so you understand the facility and which classes fit your starting point. You will not feel out of place.
Do I need to book classes in advance?
Booking is recommended for the 5:30 AM and 5:30 PM sessions, which fill quickly. You can book through the member portal or at the front desk up to 48 hours ahead. Walk-ins are welcome if space allows. Open Lifting sessions never require booking.
What equipment is available?
16,000 square feet of strength and conditioning equipment including 10 barbell platforms, a full rack of kettlebells from 8 to 48 kg, ski erg and rower conditioning section, cable machines, a turf lane for sled work, and a dedicated mobility area. Free parking behind the building on Tennyson.
Can I try before committing?
Yes — all new members get a free first week with no credit card required. Come in, meet the coaches, take a few classes, and decide if this is the right gym for your training. We earn your membership before you pay for it.

From the Gym All posts →

Strength
Why Trail Runners Need the Barbell
Most trail runners train their aerobic system and ignore strength entirely. Coach Torres explains why that is a mistake — and what to do about it before your next big objective.
March 8, 2025
Conditioning
Building the Engine for High-Altitude Objectives
Ascending a Colorado fourteener is a conditioning event. Coach Brennan breaks down how to build the aerobic base and muscular endurance that makes big days manageable.
February 22, 2025
Mobility
The 3 Movements Every Outdoor Athlete Should Be Doing
Hip mobility, ankle dorsiflexion, and thoracic rotation — Coach Torres on why these three patterns matter for everything from trail running to ski touring, and how to address them in under 15 minutes a day.
February 6, 2025

Come Train
with Us.

Free first week for all new members — no credit card required. Come meet the coaches and try the classes before you decide.

4218 Tennyson Street, Suite 101
Denver, CO 80212
+1 (720) 284-0193
train@mindtreks.com

Mon–Fri: 5 AM – 10 PM
Sat–Sun: 7 AM – 8 PM

No credit card required. A coach will reach out within one business day to set up your first visit.