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Strength & ConditioningAnswer

HOW MUCH CYCLING EQUALS RUNNING?

By Anthony WalshRoadman CyclingUpdated

WHO THIS IS FOR

IS THIS YOU?

The runner moving aerobic work to the bike

You want a bounded planning reference without treating the ride as identical to the run.

The cyclist adding running

You need to account for a new session while respecting running impact and tissue tolerance.

THE ROADMAN VIEW

The Roadman view

A conversion only makes sense after naming the outcome. Energy cost, tissue load and race preparation are three different jobs.

Roadman uses the 2024 Compendium to expose the population-average MET arithmetic. We do not predict FTP from a running time or running race performance from FTP.

If symptoms, recovery or event specificity matter, those signals outrank a generic conversion output.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

  • Barbara Ainsworth, Bryce Herrmann and colleagues2024 Adult Compendium research team

    The Compendium standardises population activity-energy costs with named MET values. It supports transparent MET-minute arithmetic, not claims that two sports are interchangeable.

  • Menges and colleagues2026 running/cycling cross-training review authors

    Their seven-trial meta-analysis found no clear between-group differences in the assessed outcomes, but limited, heterogeneous evidence did not establish interchangeability.

PRACTICAL APPLICATION

DO THIS WEEK

  1. Name both speeds

    Choose the source and target activity categories rather than applying one ratio to every run and ride.

  2. Match one metric

    For estimated energy cost, multiply source MET by minutes and divide by target MET. Do not rename that result training equivalence.

  3. Restore the missing load

    Review impact, symptoms, sport-specific purpose, terrain, wind, drafting and recovery before changing the programme.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

  • MISTAKEMultiplying every run by a fixed three-to-one ratio.

    FIXName the selected speeds and metric. The result changes when either activity category changes.

  • MISTAKECalling equal MET-minutes equal training stress.

    FIXTreat MET-minutes as an energy-cost estimate and monitor biomechanical, physiological and subjective load separately.

  • MISTAKEUsing the result as injury-rehabilitation clearance.

    FIXA calculator cannot assess tissue tolerance or symptoms. Follow an appropriately qualified rehabilitation plan.

FAQ

FREQUENTLY ASKED QUESTIONS

How many cycling miles equal one running mile?
There is no universal number. At selected moderate categories the energy-cost answer can land near two or three cycling miles, but speed, terrain, wind, drafting and the outcome being matched change it.
What cycling distance is equivalent to a 5K run?
For a 5K at 6 mph matched to the 12 mph cycling category, the population-average energy-cost result is about 7.2 miles or 11.6 km. It does not match running impact or race specificity.
Can I use TSS or TRIMP instead?
They can add useful sport-specific load context when their inputs are valid, but a matched score still does not match impact, symptoms, recovery or adaptation across modes.
Can I convert running pace to cycling FTP?
Not with a reliable universal equation. Use a cycling-specific FTP method because efficiency, economy, threshold and training history differ between modes.
Can cycling replace a run during injury?
It may preserve some aerobic work with less impact, but the decision is clinical and programme-specific. The conversion does not assess symptoms or readiness to run.
Is 30 minutes cycling equal to 30 minutes running?
Only when the selected categories carry the same MET value, and then only for population-average energy cost. Tissue load, recovery and sport-specific effects remain different.

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