Overview
Green Lakes is one of the most popular hikes in central Oregon and a flagship trail in the Deschutes National Forest. It deserves every bit of that reputation. The trail follows Fall Creek for 4.5 miles through forest and meadow to a basin holding three alpine lakes at 6,500 feet. Broken Top's shattered, rust-colored face rises directly above the lakes to the north, and South Sister's massive bulk fills the sky to the west. The lakes get their distinctive green color from glacial rock flour suspended in the water, fine sediment ground down by the small glaciers above.
The hike is 9 miles round trip with about 1,100 feet of elevation gain, making it accessible to most reasonably fit hikers. The grade is gentle for the first 3 miles, then steepens for the final push into the basin. It's a trail that delivers an outsized reward for a moderate effort.
The Route
Miles 0 to 1.5: Fall Creek forest walk. The trail starts from the Green Lakes Trailhead on Cascade Lakes Highway (Highway 46), about 26 miles west of Bend. The first section follows Fall Creek through a dense canopy of mountain hemlock and subalpine fir. The grade is easy, barely noticeable, and the creek provides a steady soundtrack.
Miles 1.5 to 3: Meadows and cascades. The forest opens up as you pass through meadow clearings. In late July and early August, these meadows explode with wildflowers: lupine, paintbrush, and aster. Fall Creek drops over several small cascades in this section. The trail remains relatively flat and well-maintained, with log bridges over wet crossings.
Miles 3 to 3.5: The steeper section. Here the trail starts climbing more seriously as it leaves the creek bottom and switchbacks up toward the basin. The elevation gain is concentrated in this roughly half-mile stretch. It's not brutal, but it's a gear change from the mellow walking below.
Miles 3.5 to 4.5: The basin. The forest thins, the trail levels out, and suddenly the Green Lakes basin opens in front of you. The first lake appears on your right. A use trail leads around to the second and third lakes, each slightly higher in the basin. Broken Top dominates the view to the north, its exposed interior showing layers of red and orange volcanic rock. South Sister rises to the west, a massive wall of gray and white. On a calm morning, the reflections in the lakes are extraordinary.
Return: Retrace your steps. The downhill goes quickly, typically taking about an hour less than the hike in.
Permit Requirements
A Central Cascades Wilderness Permit is required for all hikers (day and overnight) during the permit season, which runs roughly from late May through mid-October. Day-use permits cost $1 per person per day and are managed through Recreation.gov. For a broader overview of how these permit systems work across the national forest system, see the guide to getting a national forest camping or day-use permit.
Green Lakes is one of the highest-demand permit zones in the Central Cascades system. Getting a permit requires planning.
- Advance reservations open in the spring. The Green Lakes zone is among the first to sell out. Set a reminder and book as soon as the window opens.
- Day-of permits are released at 7 AM Pacific, two days before the trip date. Be online and ready. Green Lakes day-of permits can disappear within minutes on summer weekends.
- Midweek strategy: If your schedule allows, hiking Tuesday through Thursday dramatically improves your chances of scoring a permit. You'll also enjoy a quieter trail.
- Overnight permits for the Green Lakes basin are extremely competitive. Campfires are permanently banned in the basin due to heavy use and fragile alpine terrain.
You'll also need a Northwest Forest Pass ($5/day or $30/year) or America the Beautiful Pass for parking at the trailhead.
When to Hike
Mid-July through mid-October is the primary window. Snow can linger in the basin into July, especially after heavy-snow winters. Early-season hikers may encounter snowfields on the upper trail and around the lakes.
Late July and August offer the best conditions: warm weather, snow-free trails, and peak wildflower season. They also bring the biggest crowds.
September is arguably the best month for this hike. The weather is usually still dry and stable, temperatures are comfortable for hiking (50s to 60s during the day), crowds drop significantly after Labor Day, and the mosquito population has died off. The light in September is also warmer and lower, which makes the lake colors even more vivid.
October is possible but risky. Early-season snow can close the trail or make conditions difficult. The Cascade Lakes Highway may close with the first significant snowfall. Check conditions before committing to a late-season trip.
What to Bring
Green Lakes is a moderate hike, but you're still heading into wilderness at elevation. Pack smart.
- Water: 2 liters minimum per person. The creek provides water along the route if you carry a filter, but the upper basin has limited options.
- Layers: Temperatures in the basin can be 15 to 20 degrees cooler than at the trailhead. Wind funnels between South Sister and Broken Top. Bring a wind layer and a light insulating piece even on warm days.
- Sun protection: The basin is open and exposed. Sunscreen, sunglasses, and a hat are essential.
- Bug spray: From late June through mid-August, mosquitoes near the lakes and meadows are aggressive. DEET or picaridin-based repellent is strongly recommended. A head net isn't overkill.
- Lunch and snacks: This is a 4- to 6-hour hike for most people. Bring enough food to enjoy a long lunch at the lakes. You've earned the time to sit and absorb the scenery.
- Camera: Obvious, but worth mentioning. The views in this basin are some of the most photogenic in Oregon.
Backpacking at Green Lakes
Green Lakes is a popular overnight destination in Deschutes National Forest, but the Forest Service has put restrictions in place to manage the impact.
- Campfires are permanently banned in the Green Lakes basin. Bring a stove if you want hot food.
- Camp at least 100 feet from the lakeshore. Established campsites are scattered in the trees around the basin. Use existing sites rather than creating new ones.
- Overnight permits are required and more limited than day-use permits. Book early.
- Pack out everything. Follow Leave No Trace principles. This includes food waste, hygiene products, and toilet paper. Use a WAG bag or dig a cathole at least 200 feet from water and 6 to 8 inches deep.
The basin makes an excellent base camp for exploring the surrounding area. From the lakes, experienced hikers can scramble to the summit of Broken Top (a challenging, exposed Class 3 scramble, not a casual addition) or connect to the Soda Creek Trail for a longer loop option back to the highway.
Common Mistakes
No permit. Rangers patrol this trail frequently, and citations are common. The permit system exists because this area was being loved to death. Plan ahead.
Arriving late on weekends. The trailhead parking lot holds roughly 30 to 40 cars. On summer Saturdays, it fills by 7 AM or earlier, with overflow lining the highway shoulder. An early start means easier parking and a cooler hike through the exposed meadow sections.
Underestimating mosquitoes. From late June through early August, the mosquito situation at the lakes can be genuinely miserable if you're unprepared. Bring strong repellent. This is not a "maybe I'll need it" situation.
Cutting switchbacks. The upper trail section has tempting shortcuts between switchbacks. These shortcuts cause erosion and damage the fragile alpine vegetation. Stay on the trail.
Trailhead Access
Green Lakes Trailhead is on the Cascade Lakes Highway (Highway 46), approximately 26 miles west of Bend. The highway is paved, well-maintained, and scenic, but it closes for winter (typically November through late May). Check ODOT TripCheck for current road status.
The trailhead has a paved parking lot, vault toilets, and an information board. No potable water is available at the trailhead.
Beyond the Lakes
If Green Lakes leaves you wanting more, the Three Sisters Wilderness has no shortage of connecting trails. The Broken Top Trail branches off to the north for views (and scrambling opportunities) on Broken Top. The Soda Creek Trail provides an alternative, less-crowded route into the basin from the south. And if you're feeling ambitious, you can link Green Lakes with the South Sister summit trail for a very long day or an overnight traverse.
Green Lakes is the hike that makes people fall in love with central Oregon. Three lakes, two volcanoes, wildflower meadows, and that impossible blue-green water. It's popular because it's exceptional. For a quieter alternative in the same area, Todd Lake is a short, easy walk to an alpine lake with Broken Top views and far fewer people. And if you're looking to extend your time on the Cascade Lakes corridor, the Tumalo Falls trail near Bend offers waterfall scenery with no permit required.