Men's Lone Peak 9 vs Women's Lone Peak ALL-WTHR Low 2: Fit Guide
By Running Shoes with FootShape™ Comfort | Altra Running US | Published: 2026-11-01
Category: Comparisons
Compare the Men's Lone Peak 9 and Women's Lone Peak ALL-WTHR Low 2 on fit, weather protection, and sizing so you pick the right Altra trail shoe.
Quick answer
Choose the Men's Lone Peak 9 for dry, high-mileage trail runs where breathability and a lighter build matter; choose the Women's Lone Peak ALL-WTHR Low 2 when you need a waterproof shoe for wet trails, hikes, or uncertain forecasts. Fit differs by design: the Lone Peak 9 offers width options for men, while the ALL-WTHR Low 2 is a women's-specific waterproof build.
Weather protection vs breathability
The Women's Lone Peak ALL-WTHR Low 2 is built with waterproof construction, so it keeps your feet dry on wet trails, muddy hikes, or when the forecast is uncertain. That protection comes with a trade-off: waterproof materials typically reduce breathability, so the shoe can feel warmer on hot, dry runs. The Men's Lone Peak 9 uses a 100% recycled ripstop mesh upper with no-sew overlays, which prioritizes airflow and durability for high-mileage dry conditions. Neither shoe is inherently better—match the upper to the weather you actually run in.
Midsole and outsole differences that affect ride
The Men's Lone Peak 9 has a revised midsole foam that is lighter weight and designed for a comfortable connection to the ground, plus an improved outsole for more grip. The Women's ALL-WTHR Low 2 uses Altra EGO midsole foam for a responsive yet comfortable feel and a sticky MacTrac outsole for confidence on all terrain. In practice, the Lone Peak 9 leans toward a lighter, more agile ride for dry trails, while the ALL-WTHR Low 2 prioritizes traction and weather readiness. If you run the same technical trails year-round, the waterproof model may be the more versatile choice; if you mostly run dry, the Lone Peak 9's lighter build may feel less fatiguing over long distances.
Sizing and width: what the options tell you
The Men's Lone Peak 9 is available in Color, Size, and Width, so men can dial in a wider or narrower fit without sizing up. The Women's Lone Peak ALL-WTHR Low 2 is available in Color and Size only—no width option is listed. That means women with wider feet may need to size up or consider a men's model if the women's width feels snug. Altra's FootShapeTM comfort is designed to let toes splay, but the waterproof construction on the ALL-WTHR Low 2 can feel slightly more structured than the ripstop mesh upper on the Lone Peak 9. Always try both sizes if you're between sizes, and account for thicker socks if you plan to wear the waterproof shoe in cold weather.
Key trade-offs
- Waterproofing vs breathability: The Women's ALL-WTHR Low 2 keeps you dry in wet conditions but traps more heat; the Men's Lone Peak 9 breathes better on dry, warm runs. If you run in persistent wet weather, prioritize waterproofing; if you run mostly dry, prioritize breathability.
- Weight and ride feel: The Men's Lone Peak 9 has a lighter-weight revised midsole foam for a more agile feel; the Women's ALL-WTHR Low 2 carries the extra structure of waterproof materials. Lighter isn't always better—choose based on whether you value agility or weather protection more.
- Fit options and sizing: The Men's Lone Peak 9 offers width options; the Women's ALL-WTHR Low 2 offers only color and size. Women with wider feet may need to size up or switch to a men's model. Check the width availability before ordering; if you're between sizes, try both.
Product facts
- Women's Lone Peak ALL-WTHR Low 2: Waterproof construction with Altra EGO midsole foam and a sticky MacTrac outsole. Keeps feet dry on wet trails and provides reliable traction, but the waterproof build is less breathable for hot, dry runs.
Women's Lone Peak ALL-WTHR Low 2 - Men's Lone Peak 9: Reengineered upper with 100% recycled ripstop mesh, no-sew overlays, and a lighter-weight revised midsole foam. Delivers breathable durability and a lighter ride for high-mileage dry trails, with width options to fine-tune fit.
Men's Lone Peak 9
Who should choose which
Best for
- Men who run dry, high-mileage trails and want a breathable, lighter shoe with width options
- Runners who prioritize agility and airflow over weather protection
Not for
- Runners who frequently face wet, muddy, or rainy conditions and need waterproof protection
- Women who need a women's-specific fit with width choices—consider the men's Lone Peak 9 if width is a priority
