Your plan is not a calendar. It is a learning process.
Every useful session adds information: what can you tolerate, where are you getting faster, where does performance fade late, and what is still missing before your half marathon? PACE uses those answers to develop the next stimulus.
1. PACE starts from your real performance level
Instead of dropping you into an artificial “week 1”, PACE uses training history, current volume, long runs, confirmed performances and available training days. Training starts where you actually are.
2. Execution decides whether something should change
A workout is more than completed or missed. PACE compares the planned structure with what you actually ran. Pace, heart rate, RPE, distance and progression help determine whether the stimulus was right, has become too easy, or should be interpreted differently because of conditions.
One fast split changes nothing on its own. But if the improvement is confirmed, future pace targets and your half-marathon forecast can move with it.
3. PACE does not train the same system every day
Easy, recovery, threshold, HM-specific sessions, long runs, strides and faster intervals all serve different purposes. The engine distributes those stimuli based on training phase, current level and race date. That creates contrast instead of making every run moderately hard.
4. Your half marathon becomes more specific with every phase
Earlier phases emphasize durability and aerobic foundation. Later phases give more weight to HM-specific blocks, durability, race pace and tapering. The same fitness level needs a different next stimulus eight weeks before race day than eight days before it.
5. Your race becomes part of the next training block
PACE does not analyze a confirmed race only as history. Pacing, heart rate, race phases and late fade can indicate whether pacing discipline or HM durability is the bigger lever. Those learnings can influence the next specific block and the next race strategy.
Recovery and safety support progress
Sleep, HRV, resting heart rate, fatigue, symptoms and recent training load still matter. But the goal is not to train less. These signals help PACE decide when a high-quality stimulus makes sense and when an adjustment prevents a poor training decision from slowing your development.
PACE CULTURE TRAIN is a running and fitness training application. It supports training decisions but does not diagnose illness or injury and does not replace medical or physiotherapy assessment.
The difference should not be that you see more data. It should be that you train better.
PACE develops the path to your half marathon with your actual performance.
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