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    Tinman-Style Training Pace Calculator

    Turn one honest race result into practical pace ranges and equivalent performances — with miles first and kilometer conversions beside them.

    Race distance
    Unit
    Finish time

    Use a recent race or measured time trial that reflects your current fitness.

    What this calculator does

    Enter a recent race distance and finish time. The calculator estimates a Daniels-style VDOT performance score, converts it into broad easy and tempo ranges, and solves the same model for equivalent race times.

    The layout is inspired by Tinman-style training calculators, but this is an independent educational tool. It is not an official Tinman Elite or Tom “Tinman” Schwartz calculator, and it does not reproduce a proprietary coaching prescription.

    The math

    Race velocity is converted to meters per minute. The Daniels–Gilbert equations estimate the oxygen cost of that velocity and divide it by the fraction of maximum oxygen uptake sustainable for the entered duration. This produces VDOT.

    Easy pace spans 59%–74% of estimated VDOT oxygen cost; tempo spans 83%–88%. Equivalent performances are found by solving the same VDOT equations for each distance. These bands are intentionally broad because weather, terrain, fatigue, and workout purpose matter more than a single second on the watch.

    Worked example: 5K in 25:30 produces a VDOT estimate of about 37.4, an average pace of 8:12 per mile, an easy range of roughly 11:51–9:55 per mile, and a tempo range of roughly 9:04–8:39 per mile.

    Use the ranges without racing your workouts

    • Easy pace should remain conversational. Slow down for hills, heat, poor footing, or accumulated fatigue.
    • Tempo work should feel controlled and repeatable, not like a race or a time trial.
    • Use the result from current fitness, not the race time you hope to run months from now.
    • Equivalent performances assume similar preparation and conditions; they are estimates, not predictions.

    Limitations and safety

    One result cannot describe running economy, speed, endurance durability, heat adaptation, terrain skill, or injury status. Short races may overstate marathon readiness, while a marathon result can understate speed after poor fueling or pacing. Never force a pace through pain, illness, dizziness, chest discomfort, or unusual breathlessness. See our medical disclaimer.

    Sources

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