SwimFast Tools
Trusted by 500+ triathletes worldwide
Calculators, guides, and courses built for age group triathletes. Each tool below is free — no catch.
6 tools available
Find your Critical Swim Speed from two time trials and get the exact training paces you should be working at.
Open tool →Compare your race swim times against 150,000+ results from 23 races and see exactly where you rank in your age group.
Open tool →An objective look at age group swim standards from 150,000+ results across 23 races. See what it takes to be average, good, and Kona-ready.
Open guide →Why your legs sink in freestyle, and how to improve balance, body position and alignment. A short quiz is included if you want a diagnosis.
Open guide →The complete 13-part Sinking Legs series — covering all 19 root causes of poor body position with drills and video explanations for each. 12,000 words, fully free.
Browse guides →Technique, fitness, and open water skills — the complete starting point for any triathlete who wants to understand what actually matters in the water.
Open guide →