By Limitless LL

Limitless Bike Strategy HR

Ironman Bike Pacing Strategy by Heart Rate

Upload your bike course, enter your maximum heart rate and target Ironman heart-rate intensity, and create a terrain-based pacing plan using pulsacions instead of FTP watts.

1. Upload Bike Course

GPX supported. The app analyses distance, elevation and terrain changes.

Upload GPX bike course

Using fallback sample course. Upload a GPX file to replace it.


Sample Ironman-style course
Demo course
Sample
km
m
m
m
m
terrain based
Elevation profile · coloured by HR intensity

Terrain-based segments. Heart-rate targets are shown over the mountain profile.

<70%70–78%78–84%84–88%>88%

2. Athlete & Heart Rate Intensity

Target Ironman HR % Max74%

Typical Ironman bike HR is often controlled. 84–90% FCmax is aggressive and mainly useful for testing scenarios.

HR Drift Safety+5 bpm

Adds a warning when climbs or long duration may push HR above the target range.

bpm
max - rest
scenario adjusted
weighted
segment target
marathon risk

3. HR Pacing Scenarios

4. Terrain Segments

The track is divided by terrain changes. Climbs receive slightly higher HR targets; descents receive lower HR targets for recovery.

SegKmElev +/-GradientTypeTarget HR%HRmaxZoneSpeedTimeCoach note
Limitless LL · Heart Rate Strategy MVP