Running 140 Miles Per Week: Listen to THY Legs - Seth James DeMoor

Aug 13, 2025

Intro: This is a quick summary of Running 140 Miles Per Week: Listen to THY Legs 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

Roller‑Coaster (up‑and‑down) volume: increase mileage for a couple of weeks, then drop back down before building again.
140‑mile peak weeks are the author’s sweet spot; he holds the peak for 2 weeks before cutting back to 70 mi, then climbs again (110 mi, 90 mi, etc.) as the race approaches.
Foundation first – start with a “triangle/pyramid” base of easy miles; only add tempo or speed work once the base is solid.
Avoid early anaerobic stress during a 50 k: keep most runs aerobic, save hard efforts for the final weeks.
Listen to your body – especially after injury; the first 3‑5 weeks should be very easy (1‑1.5 mi runs) until the bone is fully healed.
Practical pacing tip: a solid tempo run was shown at 5:43 min/mi for 10 mi (≈ 543 sec per mile).

Workout Example (all distances in miles)

Week 1 – 140 mi total (peak week)
Mon – 10 mi easy (R‑R)          
Tue – 12 mi easy (R‑R)          
Wed – 10 mi tempo @ 5:45 /mi   
Thu – 12 mi easy (R‑R)          
Fri – Rest or light cross‑train  
Sat – 20 mi long easy (steady)  
Sun – 6 mi recovery (very easy)
Total ≈ 140 mi

*R‑R = run‑run (steady aerobic effort). Adjust the easy‑run pace to match your current fitness; the tempo pace can be set using the Pacing app to hit the 5:45 /mi target.

Closing Note: Give the roller‑coaster 140‑mile plan a try, tweak the paces to suit your own fitness in the Pacing app, and watch the full Seth James DeMoor video for deeper insight. Happy running – keep listening to your legs and enjoy the journey!