Subject: RE: Timex Ironman Triathlon Fitness MonitorRio, once you reach a set distance needed for long runs (say 6-10miles for Sprint and 8-12 for oly ), then keep running that distance and over time, your speed will increase at same HR. You are basically building your aeorbic fitness. If you stay at same speed, then your HR may get too slow. I am struggling with this too. I had started some tempo runs once a week to help with race conditions. For example, for a 3 mile run, run 1st mile slow in endurance zone, second mile at a faster pace (for me building to 5K race pace ) and last mile slow again. |