Run
Race-derived pacing and run fitness tools for triathletes and runners.
Run tools should convert race evidence into practical training guidance.
VDOT Calculator
Turn a recent race result into practical run training paces, track splits, equivalent performances, and triathlon-aware interpretation.
VDOT works best when it turns current race evidence into useful pace guidance without pretending that triathlon running happens on fresh legs.
Results: VDOT score • Training paces • Equivalent performances • Triathlon run context
Run TSS
Calculate run Training Stress Score from session pace and threshold pace to quantify run load, plan recovery, and balance run stress within triathlon training.
Run TSS helps you quantify session intensity and load so you can balance run training with bike and swim without overreaching.
Results: Run TSS (rTSS) • Intensity Factor • Training load classification • Triathlon context • Cross-sport TSS comparison