This was a strong W15D2 interval session: 10.0 km in 57 minutes, with fresh legs and several fast segments that confirmed the speed is still there.
The workout became hotter than ideal for taper, especially with one kilometre around 4:35/km and a 191 bpm max heart rate. That is a fitness signal, but it also means the session carried real load.
At this point, the goal is not to gain more fitness by pushing harder. The goal is to keep the engine awake while arriving fresh, healthy, and confident for race day.
Takeaway. The speed is there. Do not chase more proof. Thursday should be controlled tempo work, not another all-out threshold session.
Next step. W15D4 Threshold Run. Controlled taper threshold run. Use the Garmin structure, but keep the middle block smooth and limited rather than hard.