Since nobody I know of refers to teton Pass as highway 26 I will logically assume you mean US 26/287 over Togwotee Pass from Dubois to Moran, WY. I have family with a Guest Ranch outside of Dubois and the south Absaroka Wall is my favorite place on earth.
The highway itself is in my obviously biased opinion the most varied transition of landscape of any highway in the Rocky Mountain West. A dozen miles East of Dubois at the border of the Wind River Indian Reservation you are right next to the Wind River with towering Red Badland Cliffs. Badlands continue into and around Dubois but you have incredible views of Both the South Absaroka Wall and the Northeastern Wind River Range. If you look at a map you will see these badlands are but a dozen or so lateral miles from the largest glaciers outside of Oregon.
10 miles West of Dubois you go around Stoney Point and the badlands fade and the magnificence of the Upper Wind River Valley unfolds. Be sure to look North from the pullout of the Union Pass Road. Here the magnificent Absarokas frame the true headwaters of the Wind River at the head of the Dunoir Valley. Continuing West the Pinnacle Buttes and Mt. Sublette ["Brooks Lake Cliffs"] increasingly resemble the Dolomites. If you have time for the 5 mile side trip to Brooks Lake DO IT. This stop was a favorite of T. Roosevelt and others on the Old Yellowstone Highway.
When you crest Togwotee the Pinnacles and the Cliffs of the Continental and Breccia Divides are enthralling. After about 7 miles of driving through a classic Greater Yellowstone sub-alpine meadows you come to the Togwotee Overlook just above Togwotee Mountain Lodge. Here it's more than easy to see why so many think this is the greatest first highway view of the Teton Range.
As you descend Togwotee down into Buffalo Valley the Tetons get closer and closer. If you take the back road down to Turpin Meadow Ranch you can skip a fair amount of highway taking the Buffalo Valley Road. NEar the Turpin Meadow Trailhead and the Ranch some of the best boondocking sites you will ever find are on the Buffalo Fork.
There are many serious reasons why TR and others saw to the Shoshone becoming the world's first National Forest. The forest's Wind River Ranger District East of Togwotee Pass offers some of the finest and most spectacular backroads you will ever find. Double Cabin, East Fork, Union Pass, Long Creek...it's a wonderful place on the southern end of the 48 states remotest wilderness.
Brooks Lake from the Bonneville Pass Road.
Short hike along Brooks Lake west shore.
Upper Jade Lake, a 2.4 mile hike from Brooks Lake
Hiking the Badlands right above the town of Dubois.
Hiking the Continetal Divide near Brooks Lake
A bumpy, rocky back road near Dubois.
On the Bridge of Brooks Lake Creek at the lake's outlet.
On the road to the Glacier Trailhead of the Wind River Range looking at the Absaroka.
Strolling the Breccia Divide above Togwotee Pass.
The remotest mountains of the 48 States, Younts Peak and Thorofare Mountain on an easy/moderate dayhike of the Continental Divide near Brooks Lake.
Double Cabin, one of the most spectacular roads you will ever drive.
The Wind River Range from the Union Pass Road.