Preparing an Ultra Trail: 40km, Beyond

4.5

4.7

5

4.2

4.8

4.6

4.8

3.8

4.1

4.3

4.9

4.7

4.6

4.7

4.7

4.7

4.5

4.7

4.6

4.6

4.6

4.7

4.7

4.7

4.8

4.8

4.9

4.8

4.1

4.5

4.6

4.6

4.2

4.8

4.8

4.8