Durabilityby Darren Ware
← The training log

Run · Thursday, 13 August 2026

Run, 5 miles

33 weeks to MDS

My write-up for this run isn't up yet. Everything the watch recorded is below.

Distance
5 mi
8.1 km
Moving time
1h 07m
started 20:12
Average pace
13:17
per mile
Heart rate
125
average · max 144
Climb
308 ft
94 m
Conditions
–
30% humidity

Mile by mile

MilePaceAvg HRClimb
113:14122102 ft
212:1712520 ft
314:26128115 ft
413:3712546 ft
513:091267 ft

Figures from my watch via Intervals.icu, read by the Ultra Event Training app. Heart rate from a watch is a proxy for effort, not a lab measure. The efficiency figures compare speed per heartbeat early and late in a run with a hill correction; they show what changed, not the cause.

Run, Thursday, 13 August 2026 | The Coach's Lab | Durability