It is a very busy trail but it does have rest areas, tap water, and lots of patrolling rangers, making it fairly safe for novice hikers. It's still plenty strenuous. The view from the famous Toroweap overlook in the western part of the canyon. The dropoff from the view point to the river is over 3,000 feet straight down. To get the best picture you have to get very close to the edge.
Some people crawl to the edge.
The Colorado River's largest and most infamous rapids, Lava Falls, is just downstream from Toroweap. The river may be accessed here by the Lava Falls Trail. Access is only by many miles of dirt roads from the main highway, Arizona 389. These roads are very scenic, and the ride to Toroweap is an adventure in itself. A view from the canyon's North Rim.