Negative-Split Mountain Long Run

Workout - Negative-Split Mountain Long Run

• 10min @ 10'00''/mi
• 0.0mi @ 8'55''/mi
• 0.0mi @ 8'38''/mi
• 0.0mi @ 9'38''/mi
• 0.0mi @ 8'25''/mi
• 5min @ 11'00''/mi

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Intro

A breakdown of How to Run Long in the Mountains from StrengthRunning. The video has solid guidance; the condensed version is below so you can get started with this workout right away. Watch the full video for the complete breakdown.

Key points

• Negative-split long runs. Start at a slower clip (roughly 8:50–9:00/mi) and accelerate toward the finish. The body warms up gradually and you leave room for a strong close.
• Purpose of the long run. An easy-paced session that’s neither your easiest nor hardest day. The point is to build aerobic base at consistent effort.
• How much and how often. Target 80–90% of total weekly mileage for the long run, adding 1–2 miles every 2–3 weeks. Most blocks see runs of 12–15 miles.
• Altitude and heat. Pack high-sodium electrolytes (Element works), drink regularly, and plan a water or fuel break around the 8-mile mark.
• What to bring. Light: shorts, a shirt, and a small bottle if conditions allow. Hydration is non-negotiable.
• Building distance. After several weeks you’ll have the fitness to extend. For marathon training, peak around 20 miles, then back off to double digits during base-building.

Workout example

Goal: 10-mile mountain long run in Colorado foothills

Warm-up: 0.5 mi easy jog

Mile 1–2: Easy pace 8:50–9:00/mi (negative-split start)
Mile 3–4: Slightly faster, 8:30–8:40/mi, settle into rhythm
Mile 5–6: Hold effort, terrain gets technical, 8:30–8:45/mi
Mile 7: Technical uphill, 9:30–9:45/mi, focus on form and breathing
Mile 8: Quick fluid stop (water/electrolytes), stay easy
Mile 9–10: Finish at 8:20–8:30/mi, strong

Total time ~86 min, average pace ~8:35/mi.

Closing note

Try this mountain run and adjust paces in the Pacing app to your fitness. Treat the long run as a fixed part of the week and aerobic capacity will build.

References

• How to Run Long in the Mountains - YouTube (YouTube Video)