Anonymous wrote:NP here. How fast does it have to be to still count as "running"? I'm doing most of my running on a treadmill, trying to get from walk/run to running for an extended period of time. Right now I'm walking at 3.6 and running at 5.4 mph. But when I run my heart rate shoots up above 170 and I have trouble doing it for more than 3-5 minutes. Am I going too fast? What do people following a program like couch to 5k usually set the speed to?
If you're new to running, 5.0 might be a more appropriate speed, especially since you're short. I would try 5.0 mph with a 1.0 incline to better simulate running outside.
I think the key in couch to 5K, as the OP discovered, is that you have to regulate your speed enough to keep with the program. That will mean different things for different people. But If you're having trouble maintaining the speed for the time the program is requiring, that's a signal you need to slow down.