that needs to be taken into account when planning and assessing your training. The results of your treadmill test were interesting. If you really did reach your maximum effort at 177 heart rate then yes, you are training too hard every run. As you say, 165
an hour (eight and a half minute miling), you should be able to ride at between 10.5 and 17.5mph. But while bike miles burn less energy, you will be able to train for longer periods and repeat the mileage without the associated leg tiredness that running
