Adidas Prime X - Cold Weather Run - kofuzi

Aug 13, 2025

Intro

This is a quick summary of Adidas Prime X - Cold Weather Run from Kofuzi. 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 Prime X is a high‑stack, dual‑carbon shoe that offers extra cushion and a lower body‑toll, making it ideal for long‑run workouts rather than racing.
In 16 °F (‑9 °C) weather the shoe performed well on flat, clear surfaces; it’s a bit unstable on turns.
Use the shoe as a “super‑workout shoe” for marathon‑pace or threshold miles, especially when you need extra recovery while still keeping the foot on the gas.
The shoe feels a little “mushy” on fast strides, so keep it for steady‑state work, not for racing a mile.

Workout Example

Total distance: 16.3 mi (average 7:26 /mi)

Structure (all in miles):

3 mi @ marathon effort – 6:47 /mi (≈276 W)
1 mi float – ~1 min slower per mile (≈7:50 /mi)
3 mi @ marathon effort – 6:49 /mi (≈274 W)
1 mi float – same slower pace
3 mi @ marathon effort – 6:50 /mi (≈270 W)
1 mi float – same slower pace
4× strides at the end of the last block (short, fast pickups) – keep the effort honest but don’t expect a super‑fast turnover.

How to do it:

Run three 3‑mile blocks at your target marathon pace (≈6:45‑6:55 /mi) with a 1‑mile easy “float” between each block, running about a minute slower than the marathon pace.
Finish with 4 short strides (≈15‑20 seconds each) at a fast but controlled effort.
Adjust the paces to match your own marathon goal; the example aligns with a ~3‑hour marathon.

Closing Note

Give this marathon‑pace long‑run a try in your own shoes (or the Prime X) and feel free to tweak the paces in the Pacing app to match your current fitness. Happy running and stay warm out there! 🚀