How long do I have to ride an exercise bike for, to get the equivalent of running 2.5 km?

Question

I have a Recumbent bike and the resistance is on medium.

Please give a Time and not a distance

Answer 1

The best indicator of you bodies exertion is your heart rate. It doesn't matter what kind of exercise you do if you elevate your heart rate to the same level for the same amount of time you will achieve an equivalent work out.

The best heart rate to exercise at is around 70% of your maximum heart rate. If you do not have a heart rate monitor this is the pace where it is difficult to hold a conversation but you are not gasping. This is the best exercise zone to burn fat and work your heart.

The longer you can stay in this zone the better.I

If it takes you say 10 minutes to run 2.5 km at this heart rate 10 minute on the bike at the SAME heart rate would be about equal. I would recommend trying to push it out to at least half an hour.

Answer 2

Not an easy question to answer. How hard would you be running ? Flat ground ? Also depends on how good of shape you're in, or not in, as the case would be. I'd guess 30 minutes non stop.