Get your costumes ready and come for some fun! Runners and walkers are both welcome to enjoy the festivities. Costumes are not mandatory but certainly encouraged!

The Mardi Gras Masquerade 5K and 10K races start and finish at the Railroad Pass Hotel and Casino Trailhead to the River Mountains Loop Trail. This paved trail is closed to vehicular traffic and winds thru our desert terrain. The trail covers gently rolling and flat terrain. Turn around points are at 1.55 and 3.1 miles out respectively for the 5K and 10K courses. This course departs Railroad Pass Trail Head and heads north, toward Henderson.

About the River Mountains Loop Trail:

Planning for the Loop Trail began in 1996 when a group of community interests, individuals, and agencies came together to talk about trails and local needs. This collective shared a common goal- expanding  trail opportunities for the benefit of local residents and visitors to the area. The River Mountains Loop Trail, once completed will be roughly 35 miles in length. It will surround the River Mountains connecting Lake Mead N.R.A., Hoover Dam, Boulder City, Henderson, and the rest of the Las Vegas Valley. Offering close-to-home recreational opportunities will enhance the quality of life for and offer alternative transportation venues to outdoor enthusiasts of all ages.

Over a decade in the making, much of the River Mountains Loop Trail is now available for use. While we anxiously await the continued progress of the project- the Mardi Gras Masquerade 5K and 10K races will showcase some of the progress made thus far.

For more information about the River Mountains Loop Trail and to get involved, please visit their website:

** Calico Racing reserves the right to make any necessary course changes required per the permitting body and is subject to final permit approval.