Zion National Park's 2,000-foot sandstone cliffs are world renowned for their big wall climbs. Due to their difficulty, most routes in the park are not recommended for inexperienced climbers. There are few top roping and sport climbing areas.
The best conditions for climbing are from March through May and September through early November. Temperatures in the summer can soar over 100 degrees or more on unshaded walls. Sandstone is weak when wet. Avoid climbing in damp areas or after rain. Afternoon thunderstorms are common in July and August.
There are two accessible bouldering areas in the main canyon. One is 40 yards west of the south entrance. This is a house sized boulder that poses a variety of options and problems. The other site is .5 mile north of the south entrance. Drilled Pocket Boulder is located on the west side of the road and is a slab with an obvious south facing crack.
Permits are not required for day climbs but are required for all overnight bivouacs.
Below are the routes (including maps) that are closed beginning on March 1, 2017 due to bird nesting. The red lines on the maps indicate the closed cliff areas.
Angels Landing (Closed March 1, 2017)
Cable Mountain (Closed March 1, 2017)
The Great White Throne (Beyond single and double-pitched climbs; Closed March 1, 2017)
Mt. Isaac (in the Court of the Patriarchs) (Closed March 1, 2017)
The Sentinel (Closed March 1, 2017)
Mountain of the Sun (Closed March 1, 2017)
North Twin Brother (Closed March 1, 2017)
Tunnel Wall (Closed March 1, 2017)
The East Temple (Closed March 1,2017)
Mount Spry (Closed March 1, 2017)
The Streaked Wall (Closed March 1, 2017)
Mount Kinesava (Closed March 1, 2017)
Middle Fork of Taylor Creek (Closed March 1, 2017)