Momentum Fitness is a boutique, appointment-based fitness studio located at the cellar level of 246 Columbus Avenue on the Upper West Side, just one block from the 72nd Street subway station. Founded in 2010 by longtime UWS resident Marco Guanilo, this locally owned and family-run studio has become a neighborhood staple for adults seeking intentional, personalized fitness without the chaos of big-box gyms.
The 8,000 sq ft facility includes a main training floor, strength and conditioning rig, kettlebell sets, a dedicated yoga and Pilates studio, and private locker rooms with showers. There are no membership fees or monthly dues — sessions are pay-per-class or package-based, with group classes capped at just 8–10 participants for personalized coaching and hands-on corrections.
Momentum is particularly well-regarded for its prenatal and postnatal programming. A dedicated Pre/Post Natal STRENGTH class is offered, led by multiple trainers holding ProNatal Fitness certifications and pre/postnatal specializations through NASM. Programming is trimester-specific, accounting for pelvic floor load, joint stability changes, and postpartum recovery. Named prenatal specialists on staff include Juliet Beach, Jen Ares-Cruz, Isabella Stansbury, David Tepattaporn, and Victoria Mithen.
In addition to group classes and personal training, the studio offers physical therapy and massage therapy services on-site. Classes are bookable via MindBody and ClassPass, and first-time personal training sessions are free. Note: the studio is at cellar level — parents with strollers should call ahead to confirm accessibility.
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