Birthday Mile + Adidas Boston 10 Twenty Mile Test Run - Seth James DeMoor

Aug 13, 2025

Intro: This is a quick summary of Birthday Mile + Adidas Boston 10 Twenty Mile Test Run from Seth James DeMoor. 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 “Birthday Mile” is a 1‑mile all‑out time trial done on a track each year; the goal is to beat your previous year’s time (Seth’s target was sub‑4:30).
A solid warm‑up is essential – no injuries allowed!
He uses a drone with a beacon for pacing when a traditional pacer isn’t available.
New Balance FuelCell spikes are tested for speed and leg turnover.
After the mile, he follows with a 20‑mile run to evaluate the Adidas Boston 10 shoe’s comfort and durability.

Workout Example:

Warm‑up – 10‑15 min easy jog + 4‑5 min of strides to get the legs ready.
Birthday Mile – 1 mile on a track, run as fast as you can (aim for < 4:30).
Cool‑down – 5 min easy jog, then stretch.
Optional 20‑mile shoe test – After the mile, run 20 mi at a comfortable, steady pace (≈ 10 % slower than race pace) to feel how the Adidas Boston 10 handles long mileage.

Practical Tips:

Record your splits (or let a drone/pacer do it) to see where you can improve.
If you’re new to spikes, start with short intervals before the mile to get comfortable.
Use the Pacing app to set your target mile time and customize the pace for the 20‑mile run.

Closing Note: Grab a quick warm‑up, smash that birthday mile, and give the Boston 10 a solid 20‑mile spin. Feel free to adjust the paces in the Pacing app to match your own fitness – now go celebrate another lap around the sun with a fast mile!