Welcome to
Frontline Fitness 302
We understand the importance of mental toughness, accountability, and having people in your corner.
Founded by a retired Delaware State Trooper, we proudly support first responders, veterans, and everyday people looking to become stronger physically and mentally.
Who do we help?
Everyday adults building strength, losing weight, and staying consistent through expert-led group training designed for all fitness levels.
Stronger together
Small group training and personal training for all levels. Functional strength, real coaching, and a crew that shows up for each other.
How we help
Expert coaching
Every class is guided by coaches who teach proper technique, modifications, and progressions.
Structured training
No random workouts. Every session is part of a bigger plan designed to help you improve safely and consistently.
Community accountability
You’ll train alongside supportive people who encourage you, challenge you, and help you stay committed.
Rob Costlow
Rob played Div-3 basketball at Wesley College and began his law enforcement career in 2007. By 2015 he had become the most unhealthy version of himself, so he started back on his journey to health — and saw how many busy parents were in the same spot. In 2019 he earned his ISSA certification and started Frontline Fitness 302. In 2023 he retired from law enforcement to make the gym his full-time mission.
He and his wife Amy are proud parents of twins. His belief is simple: health and happiness are for everyone.
Schedule your session
Check out our availability and book the date and time that works for you.