Parking for Kim Williams Nature Trail / Ron Mac Donald Riverfront is available in McCormick Park, N46.87245 W114.00314 The Zero Mile Marker for the Bitterroot Branch Trail, Montana Rail Link, Milwaukee Rail Trail/Kim Williams Nature trail is at N46.87077 W114.00797 The Kim Williams Nature Trail is gravel/rock surface for the eastern 2.5 miles of the 4.2 total miles on the Milwaukee RR Grade from the Zero Mile Post. The Milwaukee extends 0.5 miles west to parking at Trailhead at Dakota St / S Russell St. N46.87067 W114.01805 Very active use of these trails. An enjoyable morning ride in Missoula the “Garden City”. Noel Keller 18 Apr 09