How long it takes to build endurance So I remember when I first started to jump rope, I saw that 10 minutes of Jump Rope at a good pace is like 30 minutes of being on the treadmill. So naturally, I tried to go 10 minutes straight.... Nah, wasn't gonna happen. Eventually figured out that I'll 10 1-minute intervals with rest in between. Did that for a few weeks, and now I'm trying to go for 90 seconds 6 times, then do 1 minute to close out for the 10 minute total.... But I do eventually wanna get to where I can do a full 30 minute workout. Maybe 6 sets of 5 minutes would be good. Am I just really that out of shape that I can't even go for 5 minutes straight right now? I had been getting back into the weight room for about 2-3 weeks before I started to do jump rope, but basically had been doing almost nothing for cardio during that time.