The last few weeks of training have been a roller coaster ride.
Running a threshold workout on the trail is not easy!Trail miles are just not the same as road miles. I tried to run a workout (T paced) on the trail recently, and was using a heart rate monitor.
This was a crazy idea- at least on the trail I chose.
I didn't have to run very fast uphill to get my HR up (and above) tempo zone. Then, as soon as I ran downhill, my heart rate dropped and was impossible to keep in Tempo zone.