This recovery run was still controlled, but it felt heavier than the previous easy sessions: 8.5 km in about one hour, with heavy legs and a more tedious feeling despite good sleep.
The effort stayed reasonable, but the combination of heavy legs, 60 minutes of duration, and a higher heart rate for a recovery day suggests some accumulated fatigue from the growing marathon block.
This is not a bad signal. It is useful feedback: recovery runs should stay easy, smooth, and capped when the legs feel heavy, rather than becoming longer just to complete extra volume.
Takeaway. Keep the four-run rhythm around Saturday, Sunday, Tuesday, and Thursday. Skip short midweek recovery runs when they sit between quality days, and use walking or mobility instead if extra recovery is needed.
Next step. W03D6 Intervals. Controlled moderate-hard interval session with 2 x 10 minutes. Run by effort, especially if using hills or false flats.