Reference: Run Pace Testing — 400-800-3200 Protocol

🏃♂️ Run Pace Testing — 400 / 800 / 3200 Protocol

Estimate Critical Speed (CS) & W′ • Update Zones • Track Progress

This structured run test calculates your Critical Speed (CS) and W′ (anaerobic reserve) so you can set accurate run zones and monitor fitness block‑to‑block—whether you prefer to train by RPE, heart rate, pace, or power.

📦 What You’ll Need

  • Standard 400 m track (preferred) or precisely measured flat path
  • GPS watch set to 1‑second recording
  • Heart rate strap (recommended)
  • Familiar running shoes
  • If windy: use a flat out‑and‑back to balance conditions
  • (Optional) Run power sensor (e.g., Stryd)

🧠 Why We Test

Multi‑duration efforts (400/800/3200 m) allow us to model your CS and W′, set individualized training zones, and compare changes over time. CS anchors threshold and endurance pacing; W′ reflects your short‑duration “battery.”

🧭 Test Flow (Overview)

All three reps are maximal efforts for their distance (evenly paced “best efforts”).

DAY 1

  • Warm‑up: 15–20 min
  • 400 m best effort
  • Recovery: 6–8 min easy walk/jog
  • Cool down

DAY 2 (or a separate rested session)

  • Warm‑up: 15–20 min
  • 800 m best effort
  • Recovery: 8–10 min easy walk/jog
  • 3200 m (2 miles) best effort
  • Cool down: 10–15 min

Well‑trained athletes may complete 800 + 3200 on the same day; split if fatigued.

🔥 Structured Warm‑Up (15–20 min)

  1. 8–10 min easy jog building to relaxed aerobic pace
  2. Mobility: ankles, calves, hips (2–3 min)
  3. 4 × 20 s strides @ ~5K effort, 60–90 s easy between
  4. 2–3 min easy jog to your start line

🎯 Execution Guidelines

  • Use the lap button at the start and finish of each rep
  • Build smoothly over first 50–100 m, then hold an even maximal effort
  • Run in Lane 1 when clear (for distance accuracy)
  • If windy, use a measured out‑and‑back to balance wind
  • Don’t sprint the final 50 m—focus on even pacing

📝 Exactly What to Record

Metric Details
Elapsed time 400 m, 800 m, and 3200 m split times
Heart rate Average & max per rep
RPE notes How the first third vs final third felt
Run power (optional) Average watts per rep (e.g., Stryd)
Cadence / form (optional) Any notable changes across reps

📤 Upload to TrainingPeaks and label “Run Test”. If you’re in the coach‑supported tier, submit your notes via your weekly Jotform check‑in.

🧮 After the Test: How We Use It

  • Convert times to speeds and estimate CS (primarily from 800 + 3200)
  • Use 400 m to inform W′ (anaerobic reserve) modeling
  • Update run pace / power / HR / RPE zones
  • Compare against prior blocks to evaluate progression

⚖️ Pacing Targets (Effort Guide)

Distance RPE Target Feel
400 m 9–9.5 Maximal but controlled; no late surge
800 m 8–9 Evenly paced maximal effort
3200 m 7.5–8 Sustained maximal for distance; small fade is normal

✅ Signs of Good Execution

  • Clean lap timing at start/finish
  • Even pacing (esp. 800 & 3200)
  • Smooth cadence (≈170–190) and posture
  • RPE and HR rise progressively across each rep

🧠 Coach Tips & Troubleshooting

  • Pacing off? Treat as baseline and retest next block
  • Windy day? Use a sheltered out‑and‑back or reschedule
  • No HR strap? Prioritize RPE + pace (or power if available)
  • Retest every 6–8 weeks to keep zones current
  • New to testing? Begin with 800 + 3200 first

Related Resources

  • Critical Speed & W′ fundamentals
  • Using RPE, HR, Pace, and Power together
  • Setting zones in TrainingPeaks

Questions? ANC athletes: use your weekly Jotform check‑in.  angelanaeth16@gmail.com