Workouts / Basics
Basics
Threshold Opener 4
Modern opener session with short threshold efforts to prime the system without heavy fatigue.
Duration50:00
TSS45
IF0.73
Blocks4
Time50:00
TSS45
IF0.73
Profile
Targets in % FTP
100%50%0%
0:0025:0050:00
Z1 64% · 32 minZ4 36% · 18 min
Intervals
4 blocksZ1
Warm-upInclude 2–3 short builds to tempo.
12:0055%Repeat 3×
Z4
IntervalHold solid threshold, focus on form.
6:00100%Z1
RecoveryRelax the upper body and breathe.
4:0055%Z1
Cool-down
8:0045%What it trains
Threshold work improves sustainable power near FTP and helps riders hold pace longer in time trials, breakaways, and long climbs.