“T” for Taper = Tired – Taper Phase | Run 4 (Aerobic Endurance)

My Road to TOWaterfront 42 K

I slept well-ish, but yesterday’s speedwork definitely left its calling card.
RPE ran higher than usual, yet it was another satisfying drop in the marathon bucket.

Somewhere between kilometers 3 and 5, my mind drifted to race-day visuals – where I’d be at 10 K, 30 K, and beyond. Could I hold pace? Execute wisely? I know fun should top the list, but for me, planning and executing well is the fun.

Cool morning air, steady rhythm, and the quiet confidence that every run counts – that’s taper life.


🌡️ Conditions

MetricValue
Time of Day7 : 39 AM
Temperature12 °C
Humidity91 %
Feels Like11 °C
Wind4.7 km/h ESE

📊 Metrics – Plan vs Execution Actual

MetricPlannedExecution Actual
Duration0 : 40 : 000 : 41 : 03
DistanceN/A5.94 km
Avg Pace7 : 10 /km6 : 55 /km
rTSS / hrTSS50 / N/A58 / 42
IF (Pace / HR)0.83 / N/A0.88 / 0.75
Avg / Max HR (bpm)N/A143 / 155
Pa:HR (%)N/A7.14
Elevation Gain / Loss (m)N/A135 / 176
VAM / VAM W·kg⁻¹N/A197 / 1.02
Cadence (avg / max spm)N/A166 / 178
NGP (min/km)N/A6 : 45 /km

🔍 What the Numbers Say

  • Avg pace 6:55/km vs plan 7:10/km → a comfortable 15 s/km faster – you’re tapering, not tiring.
  • rTSS 58 and IF 0.88 (pace) mark a near-perfect aerobic stimulus.
  • Pa:HR 7.14 % reflects residual fatigue from Run 3, not inefficiency.
  • Elevation 135 m gain on rolling terrain = excellent strength maintenance.
  • Cadence 166 spm confirms rhythm held despite mental heaviness.

The metrics say “tired but trained” – exactly the zone a marathon taper aims for.


🎯 Coach’s Corner

Goal: 40-minute aerobic Zone 2 run to maintain blood flow and rhythm without adding fatigue.
Execution: ✅ Hit perfectly.

Heart-rate drift is within normal taper tolerance; pace discipline and cadence stability show you’re absorbing, not accumulating, stress. The mental fatigue you felt is a signal of taper readiness – the body is pulling resources inward for race-day restoration.

Note: This is a textbook “don’t over-interpret the RPE” run. You showed up, kept control, and let aerobic conditioning do its work.


💬 Takeaway

Sometimes the best run of the week is the one that just gets done.
Tired is temporary – adaptation is permanent.

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