10x200m + 2x500m: Speed turnover, Shoe Rotation, and Aerobic Transition

Today’s track session focused on stride efficiency and the ability to transition smoothly between short speed turnover and extended reps while maintaining relaxed running mechanics.

Workout Data

• 10x200m (1' active recovery)

  • First 5x200m in Nike Vaporfly: 32", 35", 34", 34", 33" (pace between 2'48"/km and 2'55"/km).

  • Second 5x200m in Brooks Ghost 16: 34", 34", 34", 35", 35" (pace between 2'50"/km and 2'55"/km).

• 2x500m (4' recovery)

  • 1st 500m in Brooks Ghost 16: Completed in 1'30" (pace: 3'00"/km).

  • 2nd 500m in Nike Vaporfly: Completed in 1'25" (pace: 2'50"/km).

Heart Rate & Cardio Analysis

• 10x200m Block: Average HR of 159 bpm and max HR of 178 bpm. Excellent cardio control with quick HR recovery during the 1-minute active recovery intervals.

• 1st 500m (in Brooks Ghost 16): Average HR of 163 bpm and max HR of 178 bpm, showing minimal cardiac drift and a steady aerobic response.

• 2nd 500m (in Nike Vaporfly): Average HR of 165 bpm with a peak of 178 bpm reached in the final 100 meters, proving strong aerobic stability and fast post-workout recovery.

The heart rate analysis aligns perfectly with the subjective feel on the track: HR increased progressively and under control without abnormal spikes, confirming that the aerobic system is supporting higher velocities efficiently.

Session Breakdown & Feelings

The initial 200m reps helped establish stride efficiency and leg speed. Even when swapping from the Nike Vaporfly to the Brooks Ghost 16, the splits remained exceptionally consistent, holding a relaxed cadence around 34"-35".

The final 500m reps felt strong: the first one in 1'30" built the rhythm smoothly, while the second rep, switched back into lightweight race shoes, closed down in 1'25" with excellent stride control and minimal fatigue.

Coach's Take

"Today's session is an essential part of our structured macrocycle. These short intervals serve a dual purpose: enhancing top-end speed turnover to carry over into long endurance runs, while simultaneously boosting the aerobic foundation required for the upcoming heavy training blocks." -

Francesco Guglielmino, Coach