But after training consistently with Pierre for the past few years, I knew I had a solid foundation. That gave me the confidence to go for it—and so I entered MUT100. MUT is known for being brutal, with steep climbs and descents, but I didn’t overthink it. In my mind, any 100km would be hard. So if I was going to suffer, I figured I might as well suffer in one of my favorite mountain ranges.

The pros and cons of heart rate training for mountain, trail and ultra runners.

The Role of Subjective Feedback in the Coach-Athlete Relationship and the Importance of RPE as a Measure of Intensity.