specialized
• intermediate LevelRunning Intervals
Running intervals alternate between high-intensity running efforts and recovery periods. They improve running speed, VO2 max, and lactate threshold.
Physiology & Adaptations
Short intervals (200-400m) develop VO2 max and running economy. Longer intervals (800m-mile) improve lactate threshold.
Key Benefits
Improves running speed and power.
Increases VO2 max and anaerobic capacity.
Time-efficient compared to steady distance running.
Develops pacing skills and mental toughness.
Translates to race performance.
Sample Session
Blueprint
8 × 400m @ 5K pace, with 90s jog recovery. Target: all splits within 3-5 seconds. Warm up 2km, cool down 1km.Common Pitfalls
Running first interval too fast (positive splitting).
Insufficient recovery between intervals (quality degrades).
Poor pacing (should be consistent across all intervals).
Doing intervals without aerobic base (injury risk).
Specifications
Duration30-60m
Intensityintermediate
Focusspecialized
Progressive Overload
Increase number of intervals, decrease recovery time, or run faster paces at same effort.
Setup Checklist
1
Define interval distance or time (200m, 400m, 800m, or 1-5 min).2
Set intensity (5K pace, threshold, or sprint).3
Define recovery time or distance (equal, half, or full recovery).4
Repeat for 4-12 intervals depending on length.5
Track split times for each interval.