Threshold workout

Over-Unders 3×12

Three 12-minute blocks that alternate 2 minutes at 93% FTP and 1 minute at 103%, each block followed by 6 minutes at 65%.

Duration
1 h 24 min
Workout Score
95
Intensity Ratio
0.82
Blocks
29

Free, no account needed. The file is created in your browser and stores targets as a share of FTP, so Zwift and other apps that import .zwo files scale them to your FTP.

Interval profile

20min
65% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
6min
65% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
6min
65% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
2min
93% FTP
1min
103% FTP
6min
65% FTP
10min
55% FTP
0 min42 min84 min

Intervals

Targets are a percentage of FTP. Watts are shown for an FTP of 250 W; set your own FTP to recalculate them. Nothing is saved.

FTP
±1/5/10 W
250W
#BlockDurationTargetWattsZone
1Warm-up20 min65% FTP163 WZ2
2Work: under2 min93% FTP233 WZ4
3Work: over1 min103% FTP258 WZ4
4Work: under2 min93% FTP233 WZ4
5Work: over1 min103% FTP258 WZ4
6Work: under2 min93% FTP233 WZ4
7Work: over1 min103% FTP258 WZ4
8Work: under2 min93% FTP233 WZ4
9Work: over1 min103% FTP258 WZ4
10Recovery6 min65% FTP163 WZ2
11Work: under2 min93% FTP233 WZ4
12Work: over1 min103% FTP258 WZ4
13Work: under2 min93% FTP233 WZ4
14Work: over1 min103% FTP258 WZ4
15Work: under2 min93% FTP233 WZ4
16Work: over1 min103% FTP258 WZ4
17Work: under2 min93% FTP233 WZ4
18Work: over1 min103% FTP258 WZ4
19Recovery6 min65% FTP163 WZ2
20Work: under2 min93% FTP233 WZ4
21Work: over1 min103% FTP258 WZ4
22Work: under2 min93% FTP233 WZ4
23Work: over1 min103% FTP258 WZ4
24Work: under2 min93% FTP233 WZ4
25Work: over1 min103% FTP258 WZ4
26Work: under2 min93% FTP233 WZ4
27Work: over1 min103% FTP258 WZ4
28Recovery6 min65% FTP163 WZ2
29Cool-down10 min55% FTP138 WZ1

Time in power zones

Zones follow the 7-zone model used across TrainCraft, measured as a percentage of FTP.

  • Z1 Active recovery (up to 55% FTP)10 min · 12%
  • Z2 Endurance (56 to 75% FTP)38 min · 45%
  • Z4 Threshold (91 to 105% FTP)36 min · 43%

How the numbers are calculated

Duration is the sum of all blocks. Workout Score and Intensity Ratio are calculated from the interval targets with the same formula as the TrainCraft workout builder, where one steady hour at 100% FTP scores 100. Warm-up and cool-down blocks in this workout hold a single target, so they count at the percentage shown in the table.

Similar workouts

Threshold 2×20
1 h 26 min · Workout Score 106
Criss-Cross Threshold 3×12
1 h 27 min · Workout Score 98
Threshold 3×15
1 h 36 min · Workout Score 115
Threshold 3×10
1 h 10 min · Workout Score 73

Want a different version?

Change durations and targets in the workout builder, or read the training plan guides to see where sessions like this fit into a week.

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