Cathedral Lakes Trail

Overview

Cathedral Lakes is a high-country classic: a moderate but sustained climb to two gorgeous alpine bowls tucked beneath Cathedral Peak. Most hikers visit one or both lakes as a day hike. Plan on about 8.2 miles round trip if you choose just one lake, or roughly 9.2 miles total to visit both on an out-and-back route. You’ll feel the altitude here—expect thin air and a steady grade from a trailhead around 8,500 feet up to lakes around 9,300–9,600 feet.

The Route

You’ll start from Tioga Road near Tuolumne Meadows on a well-traveled segment of the John Muir Trail. The first mile climbs right away, then alternates between rolling and steeper sections through lodgepole forest with occasional openings. Don’t expect sweeping views until you reach the basins—this is a destination hike.

Around 3 miles in, a signed junction splits: a right-hand spur drops slightly (about a half mile) to Lower Cathedral Lake, where broad granite slabs meet tranquil water and big skylines. The main trail continues gently upward to Upper Cathedral Lake (roughly another 0.7–0.9 miles), famed for picture-perfect reflections with Cathedral Peak looming behind. If you want to see both, return to the junction—an old informal cutoff between the lakes is closed.

What You’ll See

Lower Cathedral Lake sits in a glacially carved basin, with polished granite benches that make A+ picnic perches. Upper Cathedral Lake usually feels quieter and more austere, with that iconic spire dominating the horizon. Meadows near the lakes can be lush early season and often pop with wildflowers. Keep an eye on the sky; high-country weather can flip fast.

Difficulty and Conditions

Call it moderate overall, but it can feel hard thanks to altitude and sustained climbing. The tread is mostly well-marked singletrack with sandy and rocky stretches, occasional shallow stream crossings, and some exposed granite. Early season can bring marshy meadows and aggressive mosquitoes; late season ups the odds of cold, wind, and quick storms.

Best Time to Hike

Go when Tioga Road is open—typically summer into early fall. Mid-July through October tends to be the sweet spot. Start early for cooler temps, easier parking, and fewer afternoon storms. For photography, mornings usually offer calmer water for reflections at both lakes; afternoons can bring wind that ruffles the surface.

Permits and Regulations

Day hiking requires no permit. For overnights, a wilderness permit is required and demand is high—plan ahead. Bear-resistant food storage is mandatory for backpacking, and fires are prohibited in the Cathedral Lakes basin. Do all washing and bathroom duties well away from water, and filter or treat all natural sources.

Tips

• If you only pick one lake, Lower offers those broad granite “sofas” and wide-open vistas; Upper is often quieter with the classic peak backdrop.
• Wear sturdy footwear—gritty, rocky sections and sustained grade add up, especially at altitude.
• Bring layers and rain protection even in summer; storms can produce hail or sleet with little warning.
• Early season? Pack bug protection and consider waterproof footwear for marshy stretches.