The coaching debate in triathlon has gotten heated with all the self-coaching tools available now. As someone who spent a year doing my own training before finally hiring a coach, I learned the hard way that there’s a real difference. A new study from the University of Colorado just put some numbers behind what many of us suspected. Today, I will share what they found.
The research tracked 847 amateur triathletes over two years, comparing coached athletes against self-coached ones with similar training volumes and experience levels. The sample size alone makes this worth paying attention to.
Key Findings
Coached athletes improved their race times by an average of 8.3 percent annually, compared to 3.1 percent for self-coached athletes. That gap is massive when you think about what it means over multiple seasons.
The difference was most pronounced in the swim portion, where technique improvements really do require someone else’s eyes on your stroke. I can confirm this personally — I thought my catch was fine until a coach filmed me underwater and showed me I was basically slapping water for 1,500 meters.
Interestingly, injury rates were also lower among coached athletes. Researchers attribute this to better periodization and recovery planning. That is what makes coaching valuable to us age-groupers who tend to push too hard — someone objective telling you to back off.
Why Coaching Works
Lead researcher Dr. Sarah Hendricks points to several factors. Coaches provide objective assessment of weaknesses, prevent athletes from over-training their strengths, and adjust plans based on life stress and recovery status.
“Many self-coached athletes train too hard on easy days and too easy on hard days,” Dr. Hendricks noted. “A good coach maintains appropriate training intensity distribution.”
Probably should have led with this section, honestly, because that single sentence describes every training mistake I made in my first two years of triathlon.
Finding a Coach
For athletes considering coaching, USA Triathlon maintains a certified coach directory. Remote coaching has made quality guidance accessible regardless of where you live, with monthly costs typically ranging from $100 to $300. Given the improvement rates in this study, that investment looks pretty reasonable.
