Running Physical Therapist’s Reaction to AI Coaching
Why I Tried the Runna App as a Sports Physical Therapist (And If It Actually Helped Me PR)
As a physical therapist, I spend a lot of time helping patients build smart, progressive running programs. So when multiple patients started telling me they were using the Runna app, I figured it was time to see what it was all about. I know that AI running apps are very controversial right now, and my opinion is based solely on my background as a PT and my experience using the app for one training block.
My Running Background
Running has been a consistent part of my life for the past 5–6 years. I’ve completed a marathon, four half marathons, and multiple relay races, so I wouldn’t consider myself a beginner, but I also wouldn’t say I’ve ever trained in a super structured way. Up until this point, my approach was simple: I ran based on how I felt that day. No specific plan and no true speed work. I planned to use Runna for about a 12-week period leading up to the Eugene Half Marathon. My previous half marathon PR was 1:59 (at the Portland Half Marathon), and going into Eugene, I set a goal to be under 1:50.
Why I Decided to Try Runna
I’ve always programmed my own workouts, so using an app felt a little out of my comfort zone. But hearing multiple patients talk about Runna made me curious and feel the need to experience the programming before advising patients on whether to use the app or not. So I committed to using it for my race training and followed the program all the way through.
First Impressions
The app is very user-friendly. Everything is clearly laid out, and one of my favorite features was how seamlessly it synced with my calendar and my Garmin watch. It made it easy to plan my week. The initial AI-generated program seemed doable, and I liked the running workouts it had planned for me. Mileage per week progressed at a sustainable rate, and workouts seemed to have a thoughtful progression. I was curious how this plan would compare to one created with ChatGPT. I gave ChatGPT the same information I plugged into Runna, and the program was almost exactly the same. So right off the bat, my impression was mixed, and I questioned whether this was worth paying a monthly subscription for.
Customization: Honest Input Matters
Runna builds your program based on an initial survey, asking questions such as how many times you want to run per week, your current weekly mileage, past races, whether you want strength training included, and upcoming events or goals. You have to be honest. If you overestimate your fitness level, your workouts will reflect that. The program can get challenging, so accurate input upfront makes a big difference in how sustainable it feels. From my experience working with runners in a rehab setting, runners can easily overestimate what is doable for their body at a given point. One of the common complaints with Runna is an increased injury rate. I believe this mainly comes from too many moderate- to high-intensity runs. This is easily avoided by how you fill out the survey. It is very important to make sure less than 20–30% of your weekly mileage is moderate to high intensity. It can be very hard to critically evaluate the program the app creates for you if you’re not sure what too much volume or intensity looks like.
What Actually Changed with My Training
Speed work and consistency (running 4x/week). Before using Runna, I never intentionally programmed speed workouts. The app introduced structured intervals, tempo runs, and pacing strategies that I hadn’t been doing on my own. I chose to include only one speed workout per week, and the rest of my runs were at an easy pace.
What I Liked
Structure without overthinking – I didn’t have to decide what kind of run to do each day Flexibility – I could adjust for vacations and real life without feeling behind Purposeful runs – Each workout had a goal, which kept training more engaging A PT’s Perspective: A Few Cautions Even though I had a good experience overall, there are a few things I’d highlight: Don’t jump into speed work too soon. If you don’t have a solid running base, this can increase injury risk or lead to overtraining. I had been consistently running around 20 miles per week prior to starting the program. Listen to your body. No app can fully adjust for fatigue, stress, or soreness the way a coach can. Pushing through when injuries pop up is not going to get you the results you want. Critically evaluate volume and intensity.
Strength Programming
The strength training portion didn’t quite hit the mark for me. There wasn’t a clear progression, and exercises changed too frequently. It didn’t feel like you could truly build strength over time. I also didn’t love that the program provided could have been created by a free platform like ChatGPT.
My Results
So… did it work? I went into the Eugene Half Marathon with a goal of breaking 1:50. I finished in 1:47, a 12-minute PR! I credit a lot of that to the structure, the addition of speed work, and simply spending more time running. Would I Use It Again? Yes and no. I liked the ease and convenience of the app, but I could create a higher-quality, more customized running program with a coach.
Would I Recommend It?
Also yes, with some context. I think Runna is a great option if you: Want a structured plan without hiring a coach Are training for a race and need guidance Like having flexibility built into your schedule Are not currently rehabbing an injury Feel confident identifying when a program has too much volume or intensity But I’ll also say this: Nothing replaces working with a real person. An app can guide you, but it can’t fully individualize, adjust in real time, or understand your body the way a coach or physical therapist can.
TL;DR
Trying Runna was an overall positive experience for me. It added structure, introduced intentional speed work, and ultimately helped me hit my goal. You get what you pay for. Runna provides an algorithm-based program that is customizable to an extent. I think Runna can be a great place to start, but it won’t be the right program for every runner. As a physical therapist, I would not recommend it for someone with a history of running-related injuries or concerns about overtraining. A truly customized and tailored program can really only come from a coach.