Kilometres per week against the periodised plan
Longest single run each week, building toward race distance
Weekly average pace; goal marathon pace shown as reference (faster is higher)
Weekly average HR while running, from Strava; a lower average at the same effort means the aerobic engine is improving
Metres covered per heartbeat (distance ÷ total beats) — the combined pace-and-HR signal; rising means you go faster for the same effort
Every week of the build to race day
Weekly averages from Oura; rising sleep / falling resting HR signal good adaptation