Forum Discussion

Charles2222's avatar
Charles2222
Explorer
Jun 03, 2015

Grade on US 89

What is the steepest grade and for how long on US 89 from Gardiner,MT to Mammoth Hot Springs.
Roads and Routes
ReneeG's avatar
ReneeG
Explorer
Jun 03, 2015
It's very minimal, I would say maybe 4% for a couple of miles, maybe 5%.

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