TABLE 3
Modified Bruce Protocol
Stage
Minutes
Speed (mph)
Grade (%)
0
3
1.7
0
1/2
6
1.7
5
1
9
1.7
10
2
12
2.5
12
3
15
3.4
14
4
18
4.2
16
5
21
5.0
18
6
24
5.5
20
7
27
6.0
22
1 mile = 1.6 km.