Cold-Weather Endurance – Juliet Parker’s March 1st Trail Ultra

🎯 Objective

To complete a self-directed ultra trail run with consistent pacing, segment focus, and mental resilience—despite freezing temperatures and high humidity.

🏃 Athlete Profile

  • Name: Juliet Parker 
  • Run: NLRC Ultra to The Sea – Guildford, England 
  • Date: Sunday, 3 March 2024 
  • Distance: 56.95 km 
  • Moving Time: 8:16:59 
  • Elapsed Time: 9:08:42 
  • Average Pace: 8:44/km 
  • Elevation Gain: 240 m 
  • Conditions: Cloudy, 31°F (feels like 29°F), 99% humidity 
  • Device: Garmin fēnix 7s 
  • Shoes: Not recorded 
  • Top Results: 50k – 8:02:20 | Segment – 3rd fastest on Downs Link Birtley Green Bridge–Rooks Hill Bridge

📊 Pacing Breakdown – Juliet Parker

KM 1–10 (Settling In) Average Pace: ~8:20/km Notes: Juliet opened with steady effort, testing terrain and temperature. KM 4 showed a confident surge (7:04/km), suggesting early strength and segment targeting.

KM 11–21 (Mid-Run Rhythm) Average Pace: ~8:30–9:00/km Notes: Cadence and heart rate remained stable. Juliet navigated terrain shifts and fueling windows with control, showing aerobic efficiency.

KM 22–32 (Fatigue & Focus) Average Pace: ~8:30–9:30/km Notes: Pace dipped slightly in KM 26–31, likely due to terrain and energy management. Recovery in KM 32–33 (8:02/km, 8:01/km) showed mental reset and pacing discipline.

KM 33–42 (Segment Strength) Average Pace: ~8:00–9:20/km Notes: Juliet pushed through fatigue with strategic effort. KM 36 and 38 (7:49/km) reflected segment focus and grit in cold conditions.

KM 43–56 (Final Stretch) Average Pace: ~8:50–9:30/km Notes: Despite rising fatigue, Juliet held form and cadence. KM 48 (8:09/km) and KM 55–56 (8:53/km, 8:50/km) showed strong finish pacing.

❤️ Heart Rate & Effort

Estimated HR Zone: Aerobic endurance Insight: Juliet sustained a moderate heart rate (avg. 142 bpm) and efficient cadence (avg. 154 spm), indicating strong aerobic conditioning and pacing control.

💡 Key Insights

  • Segment Strategy: Juliet’s top-3 segment result reflects smart effort placement and terrain awareness.
  • Cold-Weather Grit: She adapted to freezing, humid conditions with steady pacing and mental resilience.
  • Effort Regulation: Despite terrain and fatigue, Juliet maintained consistent cadence and avoided major pacing spikes.
  • Coaching Cues: Her run demonstrates the value of segment targeting, aerobic control, and mental resets during long efforts.

🧩 Coaching Applications

  • Juliet’s pacing data  teaches segment strategy and terrain adaptation
  • Reinforces cold-weather preparation and hydration cues
  • Models how ultra efforts benefit from mental resets and cadence consistency
  • Encourages athletes to identify key segments for strategic effort placement
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