StayStacking

Keep stacking healthy training blocks.

STAGING
StayStacking
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Morning Check-In

Suggested Today

Save morning check-in to see suggestions.

Evening Check-In

Injury Tracking

Enable to track an active injury and monitor load density.

Load Density Index — —

Show:
This Week Distance —
This Week Elevation —
This Week Time —
W Saved — re-sync to update power zones
Cut at:

No activity data yet. Sync your Strava activities to get started.

Aerobic
Fitness (CTL)—
Fatigue (ATL)—
Form (TSB)—

How Load Is Calculated

Tap any day to set your planned distance, elevation, and time.

Showing actual Strava activities for the 6-week window.

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← Back Costs

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StayStacking

StayStacking helps endurance athletes build fitness without breaking down. It tracks your training load so you can stack healthy weeks, not injuries.

Getting Started

Sync Hit the Sync button to pull your last 8 weeks of activities from Strava.
HR Zones Heart rate zones are pulled from your Strava profile. Update them in Strava's settings, then hit Sync to refresh.
Pace Zones Calculated from your recent race results. You can also set a custom pace to see time spent above or below a specific threshold.
Plan Ahead Map upcoming weeks in the Training Plan tab to set targets for distance, elevation, and time.

About Load Tracking

Your weekly load is tracked across distance, elevation, time, and heart rate zones. Use the buttons above the chart to switch between views. Sudden week-over-week spikes are the primary warning sign of injury risk — a gradual, consistent build is the goal.

You can revisit this guide any time by tapping the ? button at the bottom right of the screen.

Edit Plan