Cardio Target Distance for Weekly Volume

Plan weekly running/cycling/swimming mileage from target weekly time ร— pace. 10% rule progression alerts + ACSM guideline check.

Inputs

ACSM: โ‰ฅ 150 min/wk moderate or โ‰ฅ 75 min/wk vigorous aerobic for adult health.

0 if building from scratch.

Result

Target weekly running distance
30.00 km (18.64 mi)
180 min ร— 4 sessions @ 6.00 min/km (9.66 min/mi). Per-session: 7.50 km (45.0 min).
  • SportRunning
  • Target weekly time180 min (3.00 hr)
  • Sessions per week4
  • Pace / speed6.00 min/km (9.66 min/mi)
  • Total weekly distance30.000 km (18.641 mi)
  • Per-session distance7.500 km (4.660 mi)
  • Per-session time45.0 min
  • โ€” Progression check โ€”
  • Current weekly distance25.00 km
  • Safe next-week target (10% rule)27.50 km
  • Aggressive ceiling (15%)28.75 km
  • Progression verdictExceeds the 15% threshold โ€” high injury risk. Cut target back to โ‰ค 27.5 km/wk and ramp over multiple weeks.
  • โ€” ACSM guideline โ€”
  • ACSM checkMeets ACSM minimum for moderate intensity โ€” solid health baseline.
  • DisclaimerIllustrative training-planning tool. Not medical advice. Consult coach / physician for high-volume or injury-recovery contexts.

Step-by-step

  1. Distance = time / pace = 180 min / 6 minยทkmโปยน = 30.000 km.
  2. Split into 4 sessions: 7.500 km/session, 45.0 min/session.
  3. 10% rule: next-week ceiling = 25 ร— 1.10 = 27.50 km. Target 30.00 km is above the 15% โ€” injury risk.
  4. ACSM 2018: โ‰ฅ150 min/wk moderate or โ‰ฅ75 min/wk vigorous; 180 min is at health-maintenance baseline.

How to use this calculator

  • Pick your sport โ€” pace conventions differ (min/km for running, km/h for cycling, sec/100m for swimming).
  • Enter target weekly time and sessions/week.
  • Enter the relevant pace field for your sport (the others are ignored).
  • For "current weekly distance" enter your actual recent average; 0 to skip the 10%-rule check.

About this calculator

Plan a week of cardio training: enter target weekly minutes + pace, get the weekly distance + per-session breakdown + a 10%-rule safety check against your current volume. The 10% rule (popularised by Joe Henderson and Tim Noakes in the 1980s) says weekly mileage should not increase by more than 10% week-over-week to keep injury risk manageable โ€” empirical injury-rate studies (e.g. Buist et al. 2008 Br J Sports Med) put the inflection point closer to 15% but agree that beyond that, injury rate roughly doubles. The ACSM 2018 Physical Activity Guidelines (US) recommend โ‰ฅ150 min/wk moderate OR โ‰ฅ75 min/wk vigorous aerobic for adult health, and โ‰ฅ300 min/wk moderate for further fitness improvements. WHO 2020 guidelines mirror these. This calc surfaces both numbers so a user knows whether they are below maintenance, at maintenance, or in the fitness-improvement zone.

Frequently asked

It is a heuristic, not a proven law. The original studies (Henderson 1985, Noakes 1990) drew on injury surveys without controls. Modern data (Buist 2008 Br J Sports Med; Damsted 2018 Sports Med) supports the SHAPE of the rule (large jumps = more injuries) but the exact threshold is individual. 10% is conservative; 15% is the empirical inflection in some studies.

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