The 8 Best Running Shorts for Ushering in Crisp Fall Weather

When the air turns crisp and the leaves start to crunch beneath your shoes, running suddenly feels easier again. The suffocating humidity is gone. Your pace finds its rhythm. Autumn is often called the runner's season — and with good reason.

According to Runner's World, fall offers the most comfortable conditions for endurance performance, typically between 50–59°F, when “runners are able to go faster and longer thanks to improved thermoregulation.” Meanwhile, research from the Journal of Sports Sciences shows runners' finish times improve by up to 2% in cooler temperatures — small but meaningful for both racers and everyday runners.

But staying comfortable and supported starts with the right gear — especially your shorts.

Below, we highlight the 8 best running shorts for ushering in fall weather, featuring MIER's latest performance lineup built for freedom, function, and every kind of run.

🏃♂️ For Men: Performance, Comfort & Versatility

1. MIER Men's PaceLite Shorts w/ Zipper Pockets 5"

When the air gets crisp, this is your go-to short.

Lightweight, breathable, and quick-drying, the PaceLite 5″ offers the perfect balance of comfort and practicality. The split-leg design supports natural motion, while mesh panels boost airflow on longer routes. Four pockets (including secure zippers) keep essentials safe when you’re layering up or heading out for a long fall run.

“Good gear is invisible. It lets you focus on the effort — not the distraction,” says marathon coach Ben Rosario. The PaceLite 5″ fits that philosophy exactly.

2. MIER Men's PaceLite Linerless Shorts 7"

A bit longer for cooler days or trail runs, the 7″ Linerless Shorts feature flexible, water-resistant, quick-dry fabric that adapts to weather and terrain. Ideal for runners who prefer layering with compression shorts underneath. The extra coverage keeps you warm at the start line — and comfortable when you heat up mid-run.

Tip: Pair with compression tights or calf sleeves when temperatures dip below 50°F.

3. MIER Men's 2-in-1 Running Shorts 5"

Built for versatility, these 2-in-1 shorts combine a lightweight outer shell with an inner liner for smooth support. The high-tech moisture-wicking fabric prevents cling, while the breathable design keeps you cool from tempo runs to treadmill workouts. Two insert pockets hold essentials without bounce — a smart upgrade for transitional weather.

4. MIER Men's PaceLite Running Shorts w/ Brief 3"

For runners chasing personal bests, the 3″ PaceLite is all about speed and lightness. The 90% polyester / 10% spandex blend delivers stretch and ventilation, while the built-in brief liner ensures comfort and chafe-free support. It's the ideal choice for those brisk fall mornings when you want minimal distraction and maximum stride freedom.

As ultrarunner Courtney Dauwalter famously said, “Comfort is speed.” The 3″ PaceLite proves it.

5. MIER Men's SprintDry™ Running Shorts w/ Phone Pocket 5"

Fall runs often mean carrying a little extra — your phone, keys, maybe gloves. These SprintDry™ 5″ Shorts make it easy, with three secure zipper pockets including a dedicated phone pocket. Made from lightweight, quick-dry 4-way stretch fabric, they're liner-free and adjustable at the waist, ideal for runners who want performance with flexibility. Reflective details enhance visibility during early morning or dusk runs.

6. MIER Men's SprintDry™ 2-in-1 Running Shorts 5"

The SprintDry™ 2-in-1 Shorts combine comfort, support, and sustainability. Crafted from 95% recycled polyester, they feature a compression liner for muscle support and moisture control. The outer fabric is lightweight, water-resistant, and quick-drying — perfect for training in unpredictable fall weather. With four functional pockets, including a secure zip waist pocket, these shorts go from road to gym to trail without skipping a beat.

🏃♀️ For Women: Style Meets Performance

7. MIER Women's PaceLite 2-in-1 Shorts 3"

Soft yet structured, the PaceLite 2-in-1 Shorts are crafted for women who refuse to compromise between comfort and performance. The 4-way stretch fabric adapts to every stride, while the wide waistband and adjustable drawstring ensure a personalized, secure fit. The integrated liner offers gentle support and prevents thigh chafing — perfect for those crisp, breezy runs when you want confidence and freedom in every step.

“Good running gear should feel like it's made for movement — not just sport,” says Olympic marathoner Des Linden. These shorts embody that spirit.

8. MIER Women's SprintDry™ Running Shorts w/ Brief 4"

Made with eco-friendly recycled fabric (95% polyester, 5% spandex), these SprintDry™ Shorts combine sustainability with elite comfort. They feature a built-in mesh liner, UPF 50+ sun protection, and three pockets for convenient storage — two deep side and one secure zip pocket. With a 4″ inseam and quick-dry stretch fabric, they deliver effortless comfort on sunny fall runs or race-day efforts.

Sustainability note: Each pair of SprintDry™ Shorts helps reduce plastic waste by transforming recycled fibers into high-performance gear.

🍁 Why Shorts Still Matter in Fall

Fall running isn't about bundling up — it's about balance. When the thermometer sits between 45–60°F, shorts paired with a lightweight top or midlayer are often the most efficient combination. Research from the American College of Sports Medicine shows that runners in cooler climates experience 10–12% less perceived exertion, making the right shorts an easy performance win.

To complete your setup, pair your shorts with MIER's BreezeRun™ Long Sleeve Shirt for transitional runs or throw on Zipper Pocket Fleece Pants for pre-run warmups and post-run recovery.

💬 Final Word

Fall running is when everything clicks: the air, the colors, the rhythm of your breath.

Your gear should keep up — not hold you back.Whether you prefer linerless freedom, 2-in-1 versatility, or lightweight speed, MIER's fall-ready lineup delivers comfort built for motion. Because at MIER, Miles Connect Us — and every one of them deserves the right gear.