Stay on designated trails. Trail hours are from dawn to dusk. Trail speed limit for bicycles, skates and equestrians is 15 m.p.h. / 5 m.p.h. when within 50 feet of other trail users. Bicycles and skates yield to pedestrians and equestrians; pedestrians yield to equestrians. Keep to the right of the trail. Allow room for others to pass. No smoking or fires allowed. Firearms and hunting equipment are prohibited. Motorized vehicles are prohibited (except for patrol and maintenance vehicles). Keep dogs on 6 foot maximum leash at all times; clean up after your pet. Helmets are required by state law on bicycle riders 17 years and under. It is strongly recommended that all bicyclist and horseback riders wear approved helmets. Do not ride bicycles or horses where trails are muddy. Hoof and wheel ruts damage the trails, making it difficult to repair and potentially hazardous to other riders. Class 1&2 e-bikes are permitted on City trails with the exception of trails surrounding Walnut Grove Park(PDF, 3MB) and Highlands(PDF, 431KB) areas. Please see the maps for areas that e-bikes are NOT approved. Releasing wild or domestic animals, fish or plants is prohibited. Do not disturb or collect plants, animals or archaeological objects. Take out what you carry in; Do not litter. There is no drinking water or restrooms available on the trails. Carry water and first aid supplies. Wear appropriate clothing and footwear. Rattlesnakes are sometimes spotted on trails. They will defend themselves if cornered or threatened so please be vigilant and report them to 9-1-1 if needed. Ticks, poison oak, loose rock, steep ravines and other dangers exist in the parks and/or trails. Mountain lions, bobcats and coyotes have been sighted in San Marcos. Please use caution. Parks & Trails Ranger Hotline 760-744-9494, ext. 3704. 9.04.080 - Regulation of Motorized Vehicles, Traffic and Parking