Garnet Canyon

A creek runs through an alpine meadow blooming with wildflowers in front of two mountain peaks.

Garnet Canyon is a brutal 8.2-mile alpine scrambler demanding fitness, scrambling confidence, and tactical route-finding through a technical boulder field. The reward: you're hemmed in by the Grand Teton, Nez Perce, and Middle/South Teton—some of the park's most dominant peaks. The first 2 miles climb relentless switchbacks to Three-Mile Junction; from there, the real work begins: a technical boulder field requiring hands-on scrambling and careful foot placement. This is not a scenic stroll—this is a test of grit and exposure comfort.

Quick facts

Distance Miles: 8.2
Route Type: Out and back
Difficulty Level: Strenuous / Lung buster
Elevation Gain Feet: 2430

Trail profile

Distance Miles: 8.2
Route Type: Out and back
Difficulty Level: Strenuous / Lung buster
Elevation Gain Feet: 2430
Estimated Time: 4-6 hours if you're fit; 6-8 hours if scrambling is slow or you're taking breaks for views
Trail Surface: Dirt trail with rocky sections; boulder field requires scrambling over loose and stable boulders; narrow hiking surfaces with exposure
Trail Features: Relentless switchback climb
Technical boulder field requiring scrambling
Alpine peak views (Grand Teton, Nez Perce, South/Middle Teton, Disappointment Peak)
Three-Mile Junction trail split
Stream in canyon
Narrow hiking surfaces with exposure
Trail Highlights: Surrounded by the Teton Range's most dominant peaks; technical boulder field scrambling; high-alpine views of the Grand Teton directly above the canyon

Trailhead & access

Trailhead Location: Lupine Meadows Trailhead. From Teton Park Road, turn at Lupine Meadows and follow a dirt road about a mile to the parking area.
Parking Fill Time: Full by mid-morning on summer weekends; arrive by 7:00 AM in peak season
Shuttle Required: 0
Shuttle Details: Not applicable. This is a day hike accessed directly from Lupine Meadows Trailhead.

Permits & conditions

Permit Details: Day hike does not require permit. If you plan to stay overnight in backcountry, permits are required—visit the NPS backcountry page or stop at Jenny Lake Ranger Station to apply.
Fees: $35 (Grand Teton National Park entrance fee, valid 7 days for private vehicle; $20 per person on foot/bike)
Trail Status: Open
Seasonal Closures: Snow typically closes the trail mid-November through May. Check with Jenny Lake Ranger Station for exact opening dates and current conditions.

Facilities & rules

Restrooms At Trailhead: 0
Water Sources: Stream flows through Garnet Canyon (bring a filter); dry trail until you reach the canyon. Carry minimum 2-3L of water.
Accessibility: Not ADA accessible. Trail is steep (13% average slope), rocky, and technical. Steep switchbacks, narrow hiking surfaces, and boulder scrambling make this unsuitable for users with mobility issues, vertigo, or fear of heights.

Safety & strategy

Hazards: Boulder field scrambling with exposure
Steep switchbacks
Narrow hiking surfaces with drop-offs
Elevation gain—high altitude
Snow hazard (April-June, September-November)
Route-finding required in boulder field
Sun exposure and dehydration risk
Loose rock
Hazard Details: Boulder field requires hands-on scrambling with careful foot placement over loose and stable rock; wayfinding is mandatory. Steep switchbacks with narrow ledges and some exposure to drop-offs exist. The trail reaches high elevation—hikers may feel altitude effects. Snow patches occur April-June and September-November; don't attempt without proper winter gear and experience. The NPS warns: "Hikers should be physically fit and comfortable with route finding before attempting" the boulder field. "Exercise caution when taking the Garnet Canyon Trail, as boulder field crossings and significant elevation gain can be hazardous."
Cell Service: Spotty at trailhead; assume no service in canyon. Carry satellite communicator (Garmin inReach) or personal locator beacon for emergencies.
Crowd Level: Moderately crowded on summer weekends; early-morning hikers face fewer crowds
Peak Crowd Times: Weekends in July and August; mid-morning to early afternoon
Best Season: Summer and Fall (June-October, weather permitting)
Best Time To Visit: Summer (June-August) and early fall (September-early October) after snow melts. Start by 6:00 AM to beat the afternoon heat and crowds. Avoid before mid-June (snowpack) and after mid-October (early snow risk). Check Jenny Lake Ranger Station the morning of your hike for current conditions.
Tips Advice: Carry minimum 2-3L of water—the trail dries out fast and the sun exposure is relentless. Bring a water filter for the creek.
Bring trekking poles for the descent (your knees will thank you after 2,430 feet of down).
Stop at Jenny Lake Ranger Station before you start—ask about boulder field stability and snow patches.
Tight, supportive boots are non-negotiable for scrambling.
Don't attempt the boulder field if you're not comfortable with exposure and route-finding. It's not marked.
Bring a map, compass, or GPS for the boulder field section.
Make noise regularly for bears (which are rare at this elevation but possible).
Sunscreen and a hat—the boulder field has zero shade.

More details

Park Area: Lupine Meadows area, east of Jenny Lake
Trail Markers: Well-marked trail from trailhead to Three-Mile Junction. Beyond the junction, the trail to Garnet Canyon is worn but route-finding is required through the boulder field. Cairns mark some sections, but you must navigate terrain.
Dogs Allowed: No. Pets are not permitted on this trail.
Biking Allowed: No. Hiking only.
Shade Level: Full sun exposure, especially in the boulder field. Minimal shade on switchbacks. Wear hat and sunscreen.
Emergency Contacts: Jenny Lake Ranger Station (nearby); dial 911 or use satellite device. Response time to the boulder field is slow.
Map Recommended: 1
Snow Dates: April–June and mid-October through early November; exact dates vary yearly. Check ranger station before starting.
Mud Season: May–June during snowmelt; trail can be boggy and snow patches persist above 10,000 feet
Fall Colors Peak: Late September to mid-October in the surrounding forest
Bug Season: June–August, especially heavy in canyon near water; bring bug spray and head net
Insider Tips: Stop at Jenny Lake Ranger Station before you start—they know the current boulder field conditions and snow stability. This 5-minute detour saves hours of trouble.
The trail splits at Three-Mile Junction (Mile 2). The left fork leads to Garnet Canyon; the right fork leads elsewhere. The signage is clear, but ask the ranger if confused.
The boulder field at Mile 3 is the crux. Don't rush it. Take time to scout your route and test rock stability before committing.
Peak views of the three-peak stack (South, Middle, and Grand Teton) aren't at the end—they're from the boulder field itself. Stop here and absorb it.
Most hikers descend from the boulder field rather than push further into the canyon. This is the natural turnaround for fit day-hikers.
Tighten your boots before the scramble and double-check your laces.
The false summit effect: the terrain looks closer than it is. Pace yourself.
Recent Updates: Check with Jenny Lake Ranger Station for latest trail conditions, boulder field stability, and snow assessment before attempting the hike.
Family Friendly Notes: Not suitable for young children due to exposure, boulder scrambling, and significant elevation gain. Teens (13+) with solid hiking experience and no fear of heights may manage with close supervision and parental fitness level to assist.
Nearby Facilities: Jenny Lake Visitor Center (2 miles); Jenny Lake Ranger Station (0.5 miles from trailhead, off main road); Dornan's (groceries, gas) in Moose; no facilities at Lupine Meadows Trailhead
Review Summary: Hikers report the boulder field scrambling is the crux—steep, exposed, and unforgiving if you're not confident on rock. Those who push through say the views of the Grand Teton towering above the canyon and the surrounding alpine peaks are worth every ounce of grit. Expect to be breathing hard and questioning your life choices; that's the price of admission.

Location

Frequently asked questions

Do I need climbing gear or ropes?

No ropes or technical climbing gear. This is scrambling—hands on rock, careful foot placement. If you're not comfortable boulder-hopping on exposed terrain without a rope, this isn't your trail.

Is it safe to do this hike alone?

Legally yes, but tactically risky. If you fall or get stuck on the boulder field, rescue is slow and hard. Consider hiking with a partner for safety.

Will I get lost?

Unlikely until the boulder field. From Mile 3 onward, route-finding is required—the NPS explicitly says 'ask a ranger.' The boulder field is not marked. Bring a map, compass, or GPS. Don't wing it.

How bad is the elevation gain really?

2,430 feet over 4 miles of climbing. That's a 13% average slope. Fit hikers handle it; casual hikers will suffer and take longer. Know your fitness level.

What if I encounter snow?

Don't guess. Snow hides crevasses, boulders, and hazards. If you see snow, stop at Jenny Lake Ranger Station before starting and ask if conditions are safe. Most people underestimate their snow skills.

Do I really need to talk to a ranger before starting?

Yes. They've seen current conditions, boulder stability, stream flow, and hikers in trouble. Five minutes of intel prevents hours of headaches and keeps you alive.

What fitness level do I need?

Above-average hiking fitness. You're climbing 2,430 feet with technical scrambling at altitude. If you struggle on moderate elevation hikes, this will be brutal.