Although North Dakota is fairly flat, there are hills and ridges challenging enough to use for hillclimbing. At least that is what the Grand Forks Sports Car Club found in 1967. Here is the list so far for North Dakota. The two I listed may very well be the same event, as both are listed as .4 miles long. Those two towns are 18 miles apart. **More research is in the works to identify the locations of the hills.

Adams 1967 (info soon)

Edinburg 1967-1968 (info soon)