Strenuous Hikes are those consisting of steep grades with multiple elevation changes. These hikes are not recommended for the "faint" of heart. Carry plenty of water; 1 quart/liter per person, per 2-3 hours of hiking. Combining some of these hikes can also add to the adventure of a more experienced hiker, such as the Navajo and Peek-A-Boo or Navajo, Queens Garden and Peek-A-Boo. The Peek-A-Boo Loop Trail shares the trail with Horse/Mule rides and hikers are cautioned to give the right-of-way to these animals. These hikes include:

Fairyland Loop (8 mi/12.9 km round trip) See the China Wall, Tower Bridge and tall hoodoos on this less-crowded trail.

Peek-A-Boo Loop (5.5 mi/8.8 km round trip) Steep but spectacular hike through the heart of Bryce Amphitheater. See the Wall of Windows. (This trail is shared by the trail ride concession).

Riggs Spring Loop (8.5 miles/14.2 km round trip) High elevation hike leaving from Rainbow point down through varied forests of Spruce, Fir and Bristlecone.