Our Story

He Spent 15 Years Learning Why Runners Break Down. Then He Built Something Different.

Steve Gonser is a Doctor of Physical Therapy who spent a career patching up injured runners — and noticing, every time, what came before the injury. RunSmart is what he built when he decided to stop treating the symptom and fix the cause.

Steve Gonser post-race at Boston Marathon with his son

Our mission is to build lifelong runners.

Not faster runners. Not one-race runners. Runners who are still out there in twenty years — because they trained in a way that worked with their body, their schedule, and their life.

Every plan, every workout, and every decision RunSmart makes is measured against that single question: does this keep people running for the long term?

Steve Gonser's first marathon was in Buffalo, 2008. He weighed 195 pounds, trained off spreadsheets, went out too fast, and survival-moded the last ten miles to a 4:06 finish. He signed up for another one six months later — Niagara Falls — ran the same time, ended up in the med tent, and discovered that his future in-laws had been watching from the course. His parents were there too. The only race they ever attended. He did not celebrate.

What he did instead was go back to the drawing board. He read Jack Daniels' running formula, worked through Tim Noakes' Lore of Running, and started understanding what load management actually meant — not running hard and hoping the body cooperated, but building a real system grounded in how physiology actually works. That process — building something out of failure and curiosity — became the foundation for everything that followed.

Steve Gonser at the start line of his first marathon
Steve Gonser working with a runner at his physical therapy clinic

He graduated from his Doctor of Physical Therapy program on a Friday in 2009 and started at Buffalo Rehab Group on Monday. Within months, the pattern was impossible to ignore. Injured runner after injured runner — different people, different goals, different distances — same root causes. Missing strength work. Mileage that ramped too fast. Training programs built for someone who runs full-time, handed to someone with a job, a family, and three runs a week. The plan wasn't built for them. It was built for someone else.

He started running strength classes before and after clinic shifts. 5:30am setup, run the class, treat patients all day, run another class after. PT-designed, load-managed, built around how recreational runners actually train — not how they're supposed to train in theory. Those classes, taught in the margins of a 7-to-7 clinic day, were the first version of RunSmart. The system existed long before the app did.

The app started with one workout. He recorded a strength session, called it "butt camp," and sent a private link to a single athlete. She shared it. Her friends shared it further. Strangers were doing his workout through a chain of recommendations he never started — a private link that traveled because it worked and people wanted to pass it on.

He taught himself to code by reverse-engineering open source software. Built a first version of the platform. Put one workout behind a $10/month paywall. It worked. RunSmart launched as an app in March 2020 — the same month COVID shut gyms, cancelled races, and sent millions of people outside looking for something to do. A fitness app at the start of a pandemic turned out to be good timing. He still gets up at 4:15am. Still treats patients. Still races. Still building.

Steve Gonser post-race with family

"The runners who kept ending up in my clinic weren't doing anything dramatically wrong. They were following plans that were never designed for them — their schedule, their history, their body. A plan built for an elite athlete, handed to someone with a job and three runs a week, isn't a training plan. It's an injury waiting to happen.

What I noticed was always the same: missing strength work, load that ramped too fast, and no real accounting for what happens when life gets in the way. I had a template. I'd customize it to each person — but within a system built around what actually prevents injury. People who'd been hurt for years got healthy, got on a plan, and started running consistently again.

That's the whole point. I don't want people to finish one race and never run again. I don't want them pushing hard for six months and spending the next six hurt. I want them still running in year five. Still running at 60. That's what RunSmart was built for."

— Steve Gonser, PT DPT
The Philosophy

Three things every RunSmart plan is built on.

Consistency before speed.

Speed is a byproduct of showing up — week after week, month after month, without getting hurt or burning out. Every RunSmart plan is structured to keep you running consistently first. Everything else follows from that.

Load management is injury prevention.

Injury prevention isn't a feature you toggle on. It's why the mileage increases the way it does, why the recovery days are where they are, and why the plan is structured the way it is. A physical therapist designed those decisions on purpose — because the alternative is what he spent 15 years treating.

The right plan for a human, not an elite.

Most training plans are built for athletes who run for a living, with fresh legs and professional recovery support. RunSmart was designed around real training lives — and built to produce results within them.

Steve Gonser at his first Ironman in Louisville
Steve Gonser, PT DPT
Doctor of Physical Therapy · Partner, Buffalo Rehab Group · Buffalo, New York

Fifteen years treating runners at every level — and building the clinical system that keeps them training year after year.

  • 15+ years of clinical practice treating injured runners at Buffalo Rehab Group
  • Boston Marathon × 2. Chicago. New York City. Berlin. Grandma's Marathon.
  • Personal best: 2:51:57 at Grandma's Marathon
  • Two Ironman finishes
  • 50-mile ultramarathon, Buffalo — 8:24/mile average
  • Hamilton Marathon, November 2025: 2:59:38 — 21 seconds under three hours

Host of Early Miles — an ad-free podcast about running stories and making research usable for real runners. Supported by RunSmart members.

He gets up at 4:15am. Answers emails. Talks to developers. Treats patients. Runs.

Early Miles podcast cover art
The RunSmart Podcast
Early Miles
with Steve Gonser, PT DPT

Expert conversations with elite athletes, sports practitioners, and the people shaping performance nutrition — hosted by a physical therapist who has run a 2:51 marathon and treated runners for 15 years. Ad-free. Supported by RunSmart members.

Listen to Early Miles →
From the RunSmart Community
They kept running.

Not sponsored. Not filtered. Real runners who stayed healthy, stayed consistent, and got faster as a result.

Tammy Moore
★★★★★

"What a great day! Thanks for keeping me running strong and injury free!"

Tammy Moore
Race day · healthy at the line
Jane Kersh
★★★★★

"Thank you RSO for keeping me injury free through another training cycle!"

Jane Kersh
Full training cycle · zero injuries
Sheila Cintron
★★★★★

"I can't say THANK YOU enough. The training plans and strength training has kept me injury free and running strong! Onto the next one."

Sheila Cintron
Injury-free · running strong
Charlotte Hey
★★★★★

"I followed it exactly as Steve has it written out and I'm happy to report I've been running a whole month now with no pain."

Charlotte Hey
One month back · zero pain
Scott Arrol
★★★★★

"Thanks to the Midfoot Project I've been able to get back to running following a knee injury. I'm also going faster than ever and injury free by sticking to the RSO strength programme!"

Scott Arrol
Back from knee injury · faster than ever
Susanna Musser
★★★★★

"I joined RSO about a year ago when I had only been running for a few months, and it was one of the best decisions I've ever made. I overcame the IT band injury that made me seek out help in the first place — and I've remained injury-free."

Susanna Musser
IT band comeback · one year injury-free
The plan Steve wished his patients had before they ended up in his clinic.

Start free. No credit card, no commitment, no Olympic expectations. Just a PT-designed plan built for the runner you actually are.

Start Free — No Card Needed →
Free forever tier · No credit card · Cancel Pro anytime