Each interval in a CicloZone class has a target zone. Whether the interval is completed depends on how well you executed it.
How the calculation works
For each interval, the app considers:
Zone intensity — were you in the target power zone?
RPM — were you at the target cadence range?
Riding position — seated or standing as specified.
Duration — how long you held it.
The combined result is your COL% for that interval.
Performance outcomes
You can finish each interval in one of three ways:
Match — at target. Counts as completed.
Overperform — above target. Rewarded with higher COL%.
Underperform — below target. COL% drops; if the deviation is large the interval is marked missed.
Whole-class success
Whether the class itself counts as completed and successful is calculated by summing performance across all target zones, expressed via COL%.
What's excluded
Warm-up and cool-down intervals are not counted toward COL%.
Where you'll see missed intervals
In your post-ride analytics, the Missed Intervals section shows the number not completed within tolerance, out of the total in the session.