Going-to-the-Sun Road
Glacier National Park, Montana
42 miles | 3,600 ft elevation
Start from the Lake McDonald Lodge parking lot (from the West Entrance of Glacier National Park) and head north on Going-to-the-Sun Road. For the first 10 miles you’ll ride alongside the river, climbing ever so slightly.
Just before mile 13, you’ll go through the tunnel and then soon after you’ll make the hairpin turn at “The Loop”. From that point, enjoy the next 8 miles of climbing and endless sweeping views of the mountains, the valley and river below and numerous flowing waterfalls. The climb is truly spectacular and you’ll want to be sure to stop to take pictures! 
At mile 21 you will reach the Logan Pass summit (there is a Visitor Center with restrooms and water), and then it’s time to turn around and head back down. There will likely be more cars on your way down than there were on your way up, so be careful and look out for drivers that might be distracted by the beauty.
This route starts inside the park and will require a park entrance fee and a vehicle reservation. Check the official website for details.
During the peak season, bicycles are prohibited from being on the Going-to-the-Sun Road after 11am, so start your ride early and plan accordingly. Learn more here.
I did this route as part of the Trek Travel trip (Glacier Bike Tour & Glamping with Under Canvas), which I highly recommend! You can learn more about their Glacier Bike Trips here.
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