15:XX 5K in the ADIDAS TAKUMI SEN 8 - Can they RIVAL the VAPORFLY? - Ben Is Running

Aug 13, 2025

Intro

This is a quick summary of 15:XX 5K in the ADIDAS TAKUMI SEN 8 - Can they RIVAL the VAPORFLY? from Ben Is Running. It’s a great watch — we’re breaking it down so you can try the workout today. Be sure to check out the full video for all the details.

Key Points

The video is part of a “Squid Games for runners” challenge where teams run a 7 km time trial to advance.
Ben uses the Takumi Sen 8 as a 5 km‑race shoe and compares its performance to the Nike VaporFly.
He swaps the factory laces for bright orange laces from a VaporFly to improve foot lock‑down and comfort.
A simple pre‑run stretching routine (calf raises, dynamic stretches) is highlighted to protect a recent calf sprain.
The 7 km effort averages ~3:09 – 3:15 per km, finishing in just over 22 minutes, showing the shoe can hold a solid 5 km race pace.

Workout Example

7 km Team Time Trial (Tempo‑Controlled)

Warm‑up with a short dynamic stretch routine (5‑10 min).
Run 7 km on a 500 m loop, aiming for consistent 3:10 / km pace:
- 1 km split: 3:00 (fast start)
- 5 km split: 15:46 (≈3:11 / km)
- Finish 7 km: 22:04 (≈3:09 / km)
Keep effort “just below all‑out” to stay controlled, especially on slight inclines/declines.
Cool down with easy jog or walk for 5 min.

Practical Tips to Try Today

Replace the stock laces with tighter, brighter laces for a more secure fit.
Include calf‑raise and ankle‑mobility work after each run to guard against repeat sprains.
Use a simple 500 m loop or any short circuit to gauge your 5 km pace before a race.

Closing Note

Give the Takumi Sen 8 a spin at your own 5 km or 7 km effort and tweak the paces in the Pacing app to match your current fitness. Have fun, stay safe, and keep running to inspire!