Smarter training.
Better racing.
Free, science-backed tools built by a coach and athlete who’s raced everything from Olympic triathlons to full-distance Ironman and ultras.
No email required · Personalized in 60 secondsTrain smarter, not just harder
Built from real coaching experience. No fluff, no signup walls, just tools that work.
AI Marathon Training Plan Creator
A personalized, periodized training plan generated in seconds. Built on the same principles I use coaching real athletes.
- Adapts to your experience, race date, and goal time
- VDOT-based pace zones & 80/20 intensity balance
- Marathon, half, 10K, 5K, plus Couch-to-5K and Couch-to-10K
- Built-in strength training & printable weekly schedule
Running Watch Finder
Match the right GPS watch to your training, budget, and goals. No more guesswork.
Find Your WatchRunning Shoe Finder
Find the perfect shoe for your foot, gait, and training needs in just a few questions.
Find Your ShoeMarathon Finder
Browse marathons by date, location, and difficulty. Find your next race goal.
Find a RaceMore Free Tools
Pace calculator, race predictor, VO₂ max estimator, heart rate zones, and more — all free.
View All Tools
Hi, I’m Justin.
I’ve spent the last two decades chasing finish lines – from Olympic-distance triathlons to full Ironmans, road marathons to mountain ultras. Along the way I became a triathlon coach, because I love helping other runners figure out what actually works.
RunningGearLab exists because most running advice on the internet is either generic or trying to sell you something. The tools here are built from real coaching experience and tested on real athletes – including me.
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