5 Best Flagstaff Hikes to Do in September

When September rolls into Flagstaff, the city transforms into a paradise for hikers. The summer crowds thin out, temperatures drop, and the aspen groves explode in shades of yellow and gold.

If you’re looking for the best time to lace up your boots and explore Arizona’s high country, September is it. With crisp mountain air and colorful scenery, these hiking trails offer the ultimate fall escape.

1. Humphreys Peak Trail – Arizona’s Roof

Humphreys Peak isn’t just another hike—it’s the tallest point in Arizona at 12,633 feet.

September is the sweet spot to attempt this climb because the weather is cool enough to make the long ascent manageable.

The trail winds through dense pine forests before opening up to alpine meadows and finally, panoramic views from the summit. On a clear day, you can see as far as the Grand Canyon.

• Distance & Difficulty: 10.4 miles round trip, strenuous.
• Elevation Gain: About 3,300 feet, starting from Arizona Snowbowl trailhead.
• Trailhead & Access: Parking available at Snowbowl; no permits required.

Nearby Attractions: After the hike, ride the Snowbowl Scenic Chairlift for more high-country views without the effort.

Pro Tip: Start early in the morning to avoid afternoon thunderstorms, which are common at higher elevations in September.

2. Kachina Trail – The Hidden Gem of the Peaks

If you love forest hikes the Kachina Trail should be on your list. Tucked along the southern slopes of the San Francisco Peaks, this trail is a showcase of aspen groves glowing gold in September.

• Distance & Difficulty: 10 miles round trip, moderate.
• Elevation Gain: Around 1,800 feet.
• Trailhead & Access: Trail begins near Arizona Snowbowl with free parking.

Nearby Attractions: Head back into downtown Flagstaff afterward for craft beer at Historic Brewing or a meal at Diablo Burger.

Insider Tip: Mid to late September is peak time for fall foliage. If you can, visit on a weekday morning to avoid the crowds and have the golden groves all to yourself.

3. Inner Basin Trail – A Photographer’s Dream

The Inner Basin Trail is where you’ll find the postcard-perfect fall landscapes of Flagstaff.

This trail takes you straight into the heart of the San Francisco Peaks’ volcanic crater, surrounded by endless groves of aspen.

In September, the leaves shimmer like gold coins under the mountain sun, making it one of the most photographed trails in Northern Arizona.

It’s a moderate hike but worth every step if you’re chasing those classic autumn vibes.

• Distance & Difficulty: 3.4 miles one way, moderate.
• Elevation Gain: About 1,500 feet, with thinner air at higher elevations.
• Trailhead & Access: Start from Lockett Meadow campground; a small day-use fee may apply.

Nearby Attractions: Camping at Lockett Meadow is popular for stargazing and catching early morning light on the aspens.

4. Abineau-Bear Jaw Loop Trail – A Rugged Adventure

For hikers who like a little challenge, the Abineau-Bear Jaw Loop delivers a perfect mix of meadows, high peaks, and dense forests.

September is the best time to attempt this loop because the summer heat is gone, and the crisp air makes the uphill sections far easier.

Along the way, you’ll pass through quiet groves of aspen and catch stunning views of the San Francisco Peaks.

It’s less crowded than Inner Basin or Humphreys, giving you a peaceful wilderness experience.

• Distance & Difficulty: 7 miles loop, strenuous.
• Elevation Gain: Nearly 2,500 feet.
• Trailhead & Access: Located near the Schultz Pass area; limited parking so arrive early.

Nearby Attractions: Pair this hike with a visit to Sunset Crater Volcano National Monument, just a short drive away.

5. Aspen Nature Loop Trail – Easy and Stunning

Not every great hike has to be difficult. The Aspen Nature Loop is a short and sweet trail that packs a big punch in September.

Perfect for families, casual walkers, or anyone who wants a quick dose of fall beauty, this trail loops through aspen groves and open meadows with jaw-dropping mountain backdrops.

If you’re short on time but still want to experience Flagstaff’s September magic, this is the hike for you.

• Distance & Difficulty: 1.5-mile loop, easy.
• Elevation Gain: About 250 feet, great for families.
• Trailhead & Access: Starts near Snowbowl with easy parking.

Nearby Attractions: After your walk, stop by Late for the Train Coffee in Flagstaff for a cozy local pick-me-up.

Pro Tip: Pair this hike with a scenic drive up Snowbowl Road for more fall foliage views without breaking a sweat.

Family-Friendly vs. Adventure Trails

• Family-Friendly: Aspen Nature Loop, Inner Basin Trail.
• Moderate Adventure: Kachina Trail.
• Hardcore Treks: Humphreys Peak, Abineau-Bear Jaw Loop.

Other Things to Do in Flagstaff in September

After your hikes, Flagstaff has plenty more to offer in September. Stargaze at Lowell Observatory, where Pluto was discovered.

Wander through downtown Flagstaff’s fall festivals, which often feature live music, local food, and craft beer.

Or take a scenic drive around the San Francisco Peaks, where the aspens create a golden canopy over the winding roads.

Conclusion

September is the golden month for hiking in Flagstaff.

Whether you’re conquering Arizona’s highest peak, wandering through glowing aspen groves, or taking a family-friendly stroll, the trails here deliver the kind of fall adventure you’ll never forget.