Zwift Performance Diagnostic
Most riders train harder.
Few train smarter.
Upload your training data and discover the strengths, weaknesses and opportunities hidden in your performance profile.
Performance Score
A single clear value. A clear interpretation.
8 Sections
Power Profile · Race Readiness · Action Plan
3 Priorities
For the next 30 days. Nothing more.
What PaceLab ZPD is
Understand your performance. Not just your numbers.
Clarity over complexity
Most tools show you metrics. PaceLab explains what they mean for you — and what to do next.
Diagnosis over dashboard
No more graphs. Instead, a coach report that surfaces patterns, contradictions and levers.
Honest data
We don't invent power numbers. What we don't know, we don't state — but we tell you what helps next.
How the diagnostic works
Three steps. One diagnostic report. Clear decisions.
Profile & Power
You answer precise questions about training, racing, recovery and fueling. Optional: your power bests.
Analysis
The diagnostic engine identifies your archetype, strengths, limiters, race fit and fueling gaps.
Action Plan
You receive a coach report with a 30-day plan and a share card for the community.
Understand what's really holding you back.
Not another training app. A diagnostic that feels like a conversation with an experienced coach.