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This is the ultimate end-of-the-summer challenge, testing your skill and conditioning as you climb over 10,000 ft!

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9,466' 2,885 m


4,201' 1,281 m


9,851' 3,002 m


9,854' 3,004 m



Avg Grade (2°)


Max Grade (9°)

Dogs No Dogs

E-Bikes Not Allowed

Features Views


This route is special because it takes you through some of the most amazing landscapes on the west slope of the Big Horn Mountain range in Northern Wyoming. The course includes some pavement, some singletrack, some gravel roads, and some rougher mountain roads.

Need to Know

The Historic Shell Store serves as the basecamp for all of our pre-race and post-race activities and the Shell Campground is right across the street. The Shell Campground offers RV site, tent sites, cabins, glamping tents, and other off-site rentals.


A hard tail mountain bike, 40mm tire recommended.

Aid Stations are located approximately every 10 miles

You'll head southwest out of Shell on Trapper Creek Road. The first three miles are paved giving you a nice warm up over some rolling hills. Watch for wild turkeys and pheasants crossing the road.

At the Y, you'll stay right and start the gravel. About 4.5 miles into the course, you'll pass the last hay field and get a glimpse up into Trapper Canyon towards your left. Now the work begins as you leave the maintained gravel and start the section of rugged two-track. Pay attention, this part of the course is the most raw and technical.

6.5 miles into the course, you'll get an excellent view of Devils Leap. This impressive geological features towers 800 feet in the air. Next, you'll ride through Red Basin. As the sun climbs, these vivd red and orange cliffs will change color. 10.5 miles into the ride, you'll reach the Red Gulch Road, a welcome sight after the tough terrain of Red Basin. At this point you've climbed about 1,100 feet. This backcountry byway will continue to ascend another 1,700 feet until you reach the Alkali Road where you'll turn right and descend the next nine miles towards Hyattville. Take the opportunity to recharge a little – the best is yet to come!

After taking the back entrance into Medicine Lodge Archaeological Site, it's time for a change of scenery. You'll head north on the Cold Springs Road towards Bighorn National Forest. Good thing you rested up as you coasted downhill for nine miles, because you've got a monster climb in front of you – 4,900 feet over 21 miles. Don't worry, that's only 233 feet per mile – you've got this.

Once at the top, another aid station awaits. The cool mountain air will refresh you as you take USFS 17 for the next 23 miles (there will be an aid station in this section as well). You'll pass Paintrock and Medicine Lodge Lakes, Spanish Point, Crooked Creek Hill and Snowshoe Mountain. The big climb may be over but it's not easy street. As you make your way towards US14, you'll face a few more ups and downs on some category 3 roads.

When you reach Ranger Creek Station, make a note to come back. The Shell Bench Trail #184, an excellent mountain bike trail, starts here (but that's an adventure for another day). When you reach US14, flaggers will warn uphill traffic for you.

Once on US14, it's a feast for the eyes as you descend through Shell Canyon. Shell Creek is your companion as you admire Copmans Tomb, Shell Falls, and Elephant Head Rock. While your legs will appreciate the break, stay alert – hairpin turns and switchbacks require your full attention. When the canyon narrows at the bottom the sound of Shell Creek rushing by tells you you're almost home.

Once at the bottom of the canyon, it's time for the final push home. The next five miles have a gentle descent back to Shell through rolling ranch land. Check out iconic Chimney Rock on your left before cruising back into town.

History & Background

This is the 2nd edition of the Bad Medicine Race/Ride/Tours and the courses take you to some historic places, such as: 1) Medicine Lodge State Park and 2) Red Gulch Road Dinosaur Tracksite.


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georgia dawg

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Segment of the Bad Medicine route in the Bighorn Basin. This colorful trail winds its way through alpine forest and rugged deserts.
Jun 14, 2019 near Basin, WY
Bad Medicine 90: Beautiful Red Hills section on the portion of the trail that goes from the Alkalai Road to the Medicine Lodge State Park.
May 20, 2019 near Basin, WY
Bad Medicine 90 Mile Course - Aid Station #4 - Features amazing views of the Big Horn Basin (looking west). At this spot, you'll rest up and re-energize for the climb to the top of the Big Horns!
Jul 13, 2020 near Basin, WY
This is a great view of Devil's Leap which is located in the Red Gulch Basin. The Bad Medicine 90 offers fanatastic views of the 700' formation.
May 20, 2019 near Greybull, WY
The Bad Medicine Race/Ride/Tour passes through some beautiful country, in this case, the Trapper Creek Chimney Rock.
Jul 1, 2020 near Greybull, WY
This is Devil's Leap. This 700 ft high formation is a prominent feature of our 90-mile and 56-mile Bad Medicine Races.
May 31, 2019 near Greybull, WY



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