If you asked me to pick one day hike in Yosemite, one hike that earns the right to represent what this park actually is, I'd pick this one. Up the Four Mile Trail to Glacier Point, across the top, and down the Panorama Trail past Illilouette Fall and Nevada Fall back to the Valley floor.
It's not the most famous hike. That's the Mist Trail. It's not the most dramatic. That's Half Dome. It's not the hardest. That's also Half Dome. But it is, in my experience, the most complete. In a single day, you climb 3,200 feet out of the Valley, stand on one of the great viewpoints in the American West, then descend through three different ecosystems past two major waterfalls and end up at Happy Isles wondering how the same park fit all of that into one walk. Most people drive to Glacier Point and look at the view. This hike makes you earn the view, and then it keeps giving you new ones for the next eight miles down.
I've done this loop more times than I can count. Here's how to do it well.
The full loop is roughly 13 to 14 miles depending on whether you descend the Mist Trail or the John Muir Trail for the final segment. Elevation gain is about 3,200 feet going up the Four Mile Trail. But the Panorama Trail isn't a pure descent. There's an 800-foot climb out of the Illilouette Creek drainage that catches people off guard. Total elevation change for the day is closer to 4,000 feet.
Plan for 8 to 10 hours, trailhead to trailhead. Fast hikers can do it in 7. Most people take 9 or 10, and that's fine. This is not a hike to rush. The point is the views, not the pace.
You could do this loop in either direction. Most guides don't care which way you go. I do. Up the Four Mile, every time.
Three reasons.
First, the Four Mile Trail is a relentless uphill grind: 3,200 feet of elevation gain in 4.6 miles, across roughly 58 switchbacks. It's the hardest part of the day, and you want to do it when your legs are fresh and the morning air is cool. Going up the Panorama Trail instead means climbing out of the Illilouette drainage on tired legs in the afternoon heat. That's worse.
Second, the reveal at Glacier Point is better when you've earned it from below. You climb through forest and granite for three hours, the views opening gradually: first the Valley floor far below, then Half Dome appearing over the rim at Union Point, then the full panorama at the top. If you drive to Glacier Point and start with the view, you've already seen the best thing. If you hike up, the view is the reward.
Third, the Panorama Trail descent is pure joy. You're walking downhill through waterfall country with Half Dome in your face for miles. Your legs are working but not suffering. The hard part is done. You get to enjoy this.
The Four Mile Trailhead is on Southside Drive, roughly one mile west of Sentinel Beach, near the Swinging Bridge area. There's a small parking lot at the trailhead, but it fills by 7 a.m. on busy days. If it's full, park at Yosemite Village or the day-use lot and take the Valley shuttle. The closest stop is El Capitan Shuttle Stop (E6 on the shuttle map).
Get there early. I cannot stress this enough. A 5:30 or 6 a.m. start puts you on the trail before the heat, gets you to Glacier Point by mid-morning, and gives you plenty of daylight for the Panorama descent. Starting at 9 a.m. means climbing in full sun and finishing in the dark.
The trail was originally built in 1872 by stonemason John Conway for entrepreneur James McCauley, who charged a one-dollar toll. It was exactly four miles long. In the late 1920s, the Park Service reconstructed it with gentler switchbacks, and the new alignment came out to 4.6 miles. The name stuck anyway.
The first mile is the steepest and the most exposed. You gain elevation fast through rocky switchbacks with limited shade. In summer, this section bakes in the morning sun. A hat and sunscreen are mandatory, not optional. (If you haven't read my day pack packing list, read it before this hike. This is exactly the kind of day where what's in your pack determines whether you have a great time or a miserable one.)
By mile two, you're above the Valley floor and the views start opening up. El Capitan appears across the Valley. You can see Yosemite Falls. The exposure feels real: you're on the wall now, climbing toward the rim.
Union Point comes at roughly mile three. This is a named viewpoint with a small flat area where you can sit and rest. The view here is exceptional: you're looking straight across the Valley at Yosemite Falls, with El Capitan to the west and Half Dome appearing to the east. Many people turn around here thinking they've "done the Four Mile Trail." They haven't, but I understand why they stop. It's that good.
The final mile and a half from Union Point to Glacier Point is more gradual, winding through forest with occasional openings. The switchbacks ease up. You're tired but the end is close. When you pop out at the Glacier Point railing and see the full panorama of Half Dome, Nevada Fall, Vernal Fall, and the entire High Sierra laid out in front of you, the three hours of climbing are instantly worth it.
Water on the Four Mile Trail: there is none. This trail is bone dry from bottom to top. There are no creeks, no springs, no seasonal water sources. Every drop you drink between the trailhead and Glacier Point comes out of your pack. Carry at least three liters per person. I carry three and usually wish I'd brought four on hot days.
Glacier Point sits at 7,214 feet with what might be the most complete view in the park: Half Dome at eye level, the Clark Range to the southeast, Nevada Fall and Vernal Fall tumbling below you, and the Valley floor 3,200 feet straight down.
Facilities: restrooms are available. There is a snack bar and gift shop, though availability depends on the season and can vary early in the year. Important: do not count on water being available at Glacier Point early in the season. The NPS has noted that drinking water may not be available when the road first opens. Later in the season, a water fountain near the amphitheater area is typically running. But the safe play is to carry enough water to get from the Four Mile Trailhead all the way to Illilouette Creek on the Panorama Trail. That's roughly 7 miles of dry trail.
If water is available, fill up everything you have. You'll need it for the Panorama descent.
Glacier Point Road typically opens in mid-to-late May, depending on snow. In 2026, the road opened on May 9. When the road is closed, you can still hike the Four Mile Trail to Glacier Point and back. It becomes an out-and-back instead of a loop, because the Panorama Trail access from the top depends on the road and facilities being open. Check the NPS conditions page before your trip.
Spend at least thirty minutes at Glacier Point. Eat something substantial. Refill water if the fountain is running. Use the restroom. You've done the hard part. The next eight miles are almost entirely downhill, but they're still eight miles.
From Glacier Point, the Panorama Trail heads east along the rim and then drops into the drainage of Illilouette Creek. The trail gets its name honestly: for the first two miles, you're walking with a continuous panorama of Half Dome, Clouds Rest, and the Clark Range filling the horizon. The scale is almost disorienting. Half Dome, which looked like a wall from the Valley, reveals itself as a narrow fin of granite with a sheer face and a domed back.
About two and a half miles from Glacier Point, you descend into the Illilouette Creek drainage and reach a bridge above Illilouette Fall. The fall drops 370 feet and is best viewed in spring and early summer when Illilouette Creek is running full.
This is your water refill point. Illilouette Creek is the first reliable water source since the Four Mile Trailhead, roughly 7 miles back. If you're carrying a filter or purification tablets (and on this hike, you should be), fill up here. The creek runs reliably through July in most years. By late August it can be low.
After the bridge, the trail climbs out of the Illilouette drainage. This is the surprise of the hike: an 800-foot ascent over about a mile and a half that catches people on already-tired legs. It's not as steep as the Four Mile Trail, but it feels harder because you thought the climbing was done. It wasn't. Budget the energy for this.
After the Illilouette climb, the trail traverses across open granite with views down into the Merced River canyon. Nevada Fall appears ahead: 594 feet of thundering whitewater at peak flow. The trail descends to a junction with the John Muir Trail near the top of Nevada Fall.
This is where you make a choice.
From the JMT junction above Nevada Fall, you have two options to get back to the Valley floor.
The Mist Trail is shorter (about 1.7 miles to Happy Isles), steeper, and more dramatic. It drops alongside Nevada Fall and then Vernal Fall, with sections where the spray soaks you completely. The granite steps along Vernal Fall are the most photographed section of trail in Yosemite. It's spectacular. It's also steep, with uneven stone steps that are brutal on tired knees, and the wet rock can be slippery. If your legs are solid and you want the waterfall experience, take the Mist Trail.
Important note for 2026: Starting June 30, the Mist Trail between Nevada Fall and Vernal Fall has weekday access restrictions: open only after 3:30 p.m. Monday through Thursday. This is a crowd management measure. If you're hiking on a weekday after June 30, you'll likely need to take the JMT for the final descent, or time your arrival at the junction after 3:30.
The John Muir Trail is longer (about 3.5 miles to Happy Isles), gentler, and easier on the knees. It switchbacks down through forest with occasional views of Nevada Fall from a distance. It's less dramatic but significantly more comfortable after a long day. On a 13-mile day with 4,000 feet of elevation change, your knees will have an opinion about which route you take. Listen to them.
Either way, you end up at Happy Isles: the Nature Center at the east end of Yosemite Valley. Water and restrooms are available here. The Valley shuttle picks up at Happy Isles (shuttle stop 16), and you can ride it back to wherever you parked.
Start time: 5:30 to 6:30 a.m. at the Four Mile Trailhead. Earlier is better.
Total distance: 13 to 14 miles depending on the final descent route.
Total elevation change: roughly 4,000 feet (3,200 up, 800 up out of Illilouette, rest is down).
Time: 8 to 10 hours.
Water plan: This is the most important logistic on this hike. Carry at least three liters from the trailhead. The Four Mile Trail is completely dry. Glacier Point may have water (check conditions). Illilouette Creek is your guaranteed refill. Bring a filter or treatment. Water is available again at Happy Isles at the bottom.
Water sources in order:
Food: Bring a real lunch and plenty of snacks. 1,500 to 2,000 calories for the day. Eat at Glacier Point, eat again on the Panorama Trail. Low blood sugar on the Illilouette climb is how bad decisions happen.
Gear: Read the day pack packing list. For this specific hike, the non-negotiables are: 3+ liters of water, water filter or purification tablets, hat, sunscreen, headlamp (in case you're slower than expected), layers (Glacier Point at 7,200 feet can be 20 degrees cooler than the Valley floor), and trekking poles if you use them (your knees will thank you on the descent).
Getting back to your car: The hike ends at Happy Isles. Your car is at the Four Mile Trailhead, roughly 4 miles away by road. Take the Valley shuttle from Happy Isles (stop 16) toward the El Capitan shuttle stop (E6), which is closest to the trailhead. The shuttle runs frequently in peak season. In early season, check the schedule. Reduced service may mean a longer wait or a walk.
When to do this hike: Late May through October, depending on trail conditions and Glacier Point Road status. Peak waterfall season (late May through June) is the best time. Illilouette Fall and Nevada Fall are at full power. By August the falls are diminished but the trails are dry and conditions are more predictable. Avoid this hike in active thunderstorm conditions. The Four Mile Trail has significant exposure, and you'll be at 7,200 feet at Glacier Point.
Glacier Point Road: Must be open for the full loop to work. The road typically opens mid-to-late May. In 2026, it opened May 9. When the road is closed, Glacier Point facilities (restrooms, water, snack bar) are unavailable, and the Panorama Trail is accessible only from below. Check NPS conditions before your trip.
I've hiked most of the trails in this park. I've led programs on dozens of them. This loop is the one I come back to.
The Four Mile Trail teaches you what Yosemite actually is: not a postcard, but a vertical landscape that you experience with your legs and your lungs. You climb the wall of the Valley, the same wall that glaciers carved, and by the time you reach the rim you understand the scale of this place in a way that no viewpoint pullout can give you.
Glacier Point gives you the reward: the whole park spread out below you, Half Dome at eye level, the Sierra stretching to the horizon.
And the Panorama Trail gives you the variety: waterfalls, creek crossings, granite traverses, forest, and a slow, satisfying descent through everything Yosemite has to offer in a single afternoon.
No other hike in the park does all three.
Start early. Carry enough water. Bring a filter. And take your time at Union Point, at Glacier Point, at the Illilouette bridge, and at the top of Nevada Fall. Those are the moments that make this hike what it is.
It's 13 miles and 4,000 feet of elevation change, and every step of it is worth it.