Progress (2 days apart): Distance +3% (3.65 → 3.76 km). Pace improved 8:09 → 7:55/km +3%. Same duration (~30 min) but covered more ground at a faster pace. HR slightly higher (146 → 149 avg) — pushed harder, not less fit. Z4 increased from 6% to 15% — more sustained effort in the back half. TRIMP up 76 → 82 reflecting higher training load. Both runs had calf + foot pain — shoes arriving Mar 31.