Fowler transitions from Boulder Open Space and Mountain Parks (OSMP) land into Eldorado Canyon State Park while ascending from prairie, to shrubs and then forest. Treat yourself to spring flowers, canyon walls and spectacular rock formations while hiking this scenic trail. Be sure to keep your dogs on leash. Bikes are allowed on the first 1/2 mile of the Fowler Trail until the Spring Brook Loop North junction. Beyond this point, bicycles are not permitted on Fowler Trail. Equestrians are allowed on the Fowler Trail until the Goshawk Ridge junction. Equestrians are not allowed on the Fowler Trail in Eldorado Canyon State Park. Learn more about visiting Eldorado Canyon State Park.