About
Fierce45 brought its high-intensity, low-impact reformer Pilates to Castle Rock in summer 2026, taking over the Unit C space at 658 Genoa Way that most recently housed the boxing-circuit gym 30 Minute Hit. Classes run 45 minutes on the studio's signature FierceFormer — the brand's own tagline is "low-impact on your joints, high-intensity on your muscles" — in small groups led by alignment-focused coaches. The Denver-born studio was named Westword's Best Pilates Studio in the 2026 Best of Denver.
What To Expect:
- 🔥 45-minute full-body reformer Pilates on the FierceFormer
- 💪 Low-impact on your joints, high-intensity on your muscles
- 👯 Small-group classes, mornings and evenings, with coaches like Jessica Mack and Patti Lonsbury
- 🆕 New-client intro: two weeks unlimited for $65
- 💳 Memberships $119–$229/month; class packs from $160; drop-in $35
- 📍 658 Genoa Way, Unit C, Castle Rock (Castleton Center, alongside Gracie Barra and The Rock Salt Spa)
New to the studio? Read our first look at Fierce45 Castle Rock. See current pricing and book classes on the Fierce45 site.
Part of our guide to Pilates in Douglas County →
📍 Local Insights
🔥 What it is: A faster, higher-intensity take on reformer Pilates — 45 minutes of low-impact work on the FierceFormer, in small groups.
🏆 Award-winning: The Denver-born brand won Westword's Best Pilates Studio in the 2026 Best of Denver, and its early Google reviews in Castle Rock are a perfect 5.0.
🔁 What was here before: The Unit C space was previously the boxing-circuit gym 30 Minute Hit.
💳 Pricing: New clients get two weeks unlimited for $65; memberships run $119/month (4x) up to $229/month unlimited, with military, senior, student, and teacher discounts. Drop-ins are $35 and class packs start at $160.
🕗 Schedule: Classes run seven days a week — early mornings (from 5:30 a.m.) plus some weekday evenings, with weekend classes in the morning only. Book the live schedule online.
⏰ Hours
Monday: 8:15 – 10:30 AM, 4:30 – 7:00 PM
Tuesday: 5:15 – 7:30 AM, 10:30 AM – 1:00 PM
Wednesday: 8:15 – 10:30 AM, 4:40 – 7:00 PM
Thursday: 5:15 – 7:30 AM, 10:40 AM – 1:00 PM
Friday: 8:15 – 10:30 AM
Saturday: 7:15 – 10:30 AM
Sunday: 7:15 – 10:30 AM
👉 Best For
- •Reformer Pilates
- •Low-impact strength training
- •Small-group classes
Also In
Best Fitness in Castle Rock →Location
658 Genoa Way Unit C, Castle Rock, CO 80109❓ Frequently Asked Questions
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