PaceStack is an AI fitness agent that monitors your training, adapts your plan in real time, and works 24/7 — so you just show up and train.
Securely imports your last 90 days of training data — distance, pace, heart rate, and perceived effort. No manual logging required.
Tracks volume and intensity week over week to detect when you're accumulating fatigue or entering peak fitness — adjusting your plan accordingly.
Every morning at 6am you receive today's session with reasoning — including fatigue score, fatigue trend, and volume trend so you know exactly why.
Your plan, metrics, and recent activity — all in one place. Connect or disconnect Strava anytime. Revisit any past briefing.
One-click OAuth sign-in. PaceStack reads your activities — up to the last 90 days. That's all we need.
Volume, intensity, and fatigue trends are computed daily. The model learns your baseline and adapts as you train.
Each morning you get today's session with clear reasoning. No jargon, no guesswork — just what to do and why.
Most training apps show you what you already did. PaceStack tells you what to do next — and explains exactly why, based on your real data.
It doesn't just look at today's session. It tracks your fatigue accumulation, your volume trajectory, and your intensity balance over weeks — so you're always training at the right load for your current fitness.
You can do this yourself with a spreadsheet, a heart rate monitor, and hours of analysis every week. Or you can connect Strava and let the AI do it.
Your data stays yours. We read your Strava activity to generate your plan — nothing else.
Connect Strava — It's free