Section 5 of the TransAm route takes you through Yellowstone National Park, the jewel of America's National Park System, and Grand Teton National Park. Look for elk, bison, bears, and wolves as you cycle along the river between West Yellowstone and Madison, and take time to explore the many and varied geyser basins on your way to Old Faithful. On your way out of the park you will cross the Continental Divide twice, and once outside the park, a third time at the spectacular 9,658-foot elevation Togwotee Pass. Due to narrow roads and heavy traffic with lots of RV's during the summer, some cyclists are choosing to visit Yellowstone National Park by renting a vehicle and driving to see the sights. The 139-mile Teton Valley Alternate shows routing to avoid riding through the Park. A spur is  also shown to Jackson, Wyoming. From Togwotee Pass, the eastern slope of the Rockies falls away before you as you cycle along the Wind River through Dubois and on to Lander. After Lander the route crosses the dry and windy Great Divide Basin and ends in Rawlins.

More information about this route is available here.