As of 1994, climbing Devils Tower had increased in popularity. About 1.3% of the monument's 400,000 annual visitors climbed Devils Tower, mostly using traditional climbing techniques.[32] The first known ascent of Devils Tower by any method occurred on July 4, 1893, and is credited to William Rogers and Willard Ripley, local ranchers in the area. They completed this first ascent after constructing a ladder of wooden pegs driven into cracks in the rock face. A few of these wooden pegs are still intact and are visible on the tower when hiking along the 1.3-mile (2.1 km) Tower Trail at Devils Tower National Monument. Over the following 30 years, many climbs were made using this method before the ladder fell into disrepair.
Today, hundreds of climbers scale the sheer rock walls of Devils Tower each summer. The most common route is the Durrance Route, which was the second free route established in 1938. There are many established and documented climbing routes covering every side of the tower, ascending the various vertical cracks and columns of the rock. The difficulty of these routes range from relatively easy to some of the most challenging in the world. All climbers are required to register with a park ranger before and after attempting a climb. No overnight camping at the summit is allowed; climbers return to base on the same day they ascend.
