Information about the Porphyry Peak to Ranch Creek biking loop located in the Little Belt Mountains.

Mountain Bike

Porphyry Peak

High Mountain Biking

Though this bike ride is demanding, you are easily compensated with amazing views and fast descents. At the top of Porphyry is the fire tower, and you are welcome to visit if there is someone up there. There is also a outhouse near the tower. The loop is 17 miles, an ascent from King's Hill Pass up to Porphyry Peak, descend south to Ranch Creek and ride back up the Highway 89 to the pass. You can also shuttle a vehicle down to Ranch Creek road and cut off 7-8 miles of the trip and avoid the big uphill climb. 

Porphyry Peak Bike Loop Info & Contact

Dates Open June 1 - Sept. 15 Ride Distance 17 Mile Loop
Climb Elevation +/-2500 ft Pets Allowed Yes 
Top Elevation 8,200 Cell Phone Coverage 4 of 10 from the top
County Cascade/Meagher Highway 89
Mountain Range Little Belt  Nearest Town Neihart, MT
Phone Number 406.236.5511  Ranger District Belt Creek and Helena

Nearby Mountain Bike Trails

Other campgrounds located within 30 miles from Porphyry Peak Bike trail.

  • King's Hill 500 ft Miles East
  • Deadmans Gulch 3 Miles South
  • Hoover Creek 16 Miles North


Porphyry Peak Loop Location


Ride Directions

Start at King's Hill Pass on US 89 and head up Porphyry road #838 to the top of Showdown Montana Ski Area. At the top of the mountain is the Porphyry Peak Lookout Tower, and there is often someone up there and they welcome visitors. If you can, we implore you to go to the top of the tower and take in the amazing views! From the top go south on the Mizpah Ridge Trial #780, marked by blue diamonds. Before getting to the Mizpah Bowl, you will encounter lots of steep descents. At the top of the bowl is an shelter with a picnic table, where you can enjoy a rest before continuing. Continue down the trail towards the trees where the trail comes to the top of Ranch Creek. Continue following the trail southwest but do not miss a sharp turning east near a clear cut that will take you into Ranch Creek and F.S. road #3423 that eventually comes to U.S. Highway 89. From here, turn north and head back up the highway for 7 miles back to King's Hill Pass