Cathedral Lakes

Overview

Cathedral Lakes is classic high-country Yosemite: granite bowls cradling two clear alpine lakes with Cathedral Peak towering above. You’ll hike a marquee slice of the John Muir Trail out of Tuolumne Meadows, and the payoff at the lakes easily justifies the grind.

Trail at a Glance

Expect a steady climb through forest with brief flats before the views explode near the lakes. Most hikers report 8–9.5 miles round trip to one or both lakes from the official trail start, but your total can stretch to about 10–11 miles if you park farther away near the visitor center. Elevation gain generally lands around 1,000–1,500 feet, starting around 8,500 feet—altitude adds bite to the effort.

Lower vs. Upper Cathedral Lake

Lower has broad granite slabs and those postcard angles on Cathedral Peak; circling along the right side opens up some of the best panoramas. Upper often feels quieter, with dramatic peak backdrops and excellent sunset/sunrise light—many backpackers favor it for camping. The once‑used cutoff between the two has been closed; to visit both, return to the main junction, which adds time and mileage.

Best Time to Visit

Plan for mid-July through early October after Tioga Road opens and snow recedes. Afternoon thunderstorms are common in summer—start early to beat both crowds and weather. Nights turn cold by mid-September, and early/late season can bring lingering snow or ice on the trail.

Permits and Rules

No permit is required for day hikers. Overnight trips require a wilderness permit tied to your entry trailhead; quotas are competitive, and bear canisters are mandatory for food storage. Campfires are prohibited in the Cathedral Lakes basin. Stay on established trails, pack out all trash, and don’t feed or approach wildlife.

Logistics

The trailhead sits just west of the Tuolumne Meadows Visitor Center on Tioga Road. There’s no true lot at the start—roadside spots are limited. Overflow parking at the visitor center is common (adds walking distance), and a seasonal bus services Tuolumne Meadows. A toilet is available near the trailhead, and there are food storage lockers by the parking. There’s no potable water at the start; you’ll cross a stream partway in and find reliable water at the lakes—treat everything.

Conditions and Safety

High elevation makes the climb feel tougher; pace yourself and hydrate. Summer can bring fast‑moving storms with hail or sleet—carry layers and rain gear. In shoulder seasons, expect patches of snow or ice and take care on granite slabs. Mosquitoes can be fierce around meadows and shorelines early summer—bring repellent and consider a head net. Cell service is spotty; carry a map and downloaded navigation.

Wildlife

This is classic Sierra bear country. Store all scented items properly (canister for overnights) and keep your distance from wildlife. Around the lakes, you’ll likely share the shoreline with curious marmots and plenty of birds—enjoy the watching, skip the feeding.