Running Science
Analyses produced by running our own planner across many runner profiles. Each one lists its assumptions and limits.
- October 30, 2026
Analysis · Plan basics
Goals our planner declines, and why
When the planner says no to a goal, it explains why and offers options. Four real examples, generated from the engine.
- October 30, 2026
Analysis · Plan basics
How many weeks do you need, by starting mileage?
Our planner's answers for the 5K, 10K and half marathon across six starting mileages, under stated assumptions including run-time limits.