The general rule of thumb is there is a 1:3 run-to-bike ratio, meaning one mile of running at a moderate effort equals three miles of cycling at that same effort level. Cycling 12 miles is the equivalent of running four miles, with both effort levels being the same in a very general sense for cardiovascular fitness.
Cycling helps improve running performance by developing fitness, stamina and endurance without damaging your leg muscles. It’s a great low impact cardiovascular workout too and by adding it to your weekly training regime it will help you to do more with less stress on your body.
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