Boundary monument 431
USA /
Montana /
Harlem /
World
/ USA
/ Montana
/ Harlem
World / United States / Montana
boundary marker
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Coordinates: 48°59'57"N 108°52'11"W
- Boundary monument 605 403 km
- Boundary monument 613 422 km
- Boundary monument 614 425 km
- Boundary monument 617 432 km
- Montana-North Dakota-South Dakota Tripoint 497 km
- Idaho - Montana - Wyoming border Tri-point 530 km
- Nebraska-Wyoming-South Dakota Tripoint 764 km
- ID-UT-WY Tri-Border Point 797 km
- First rapids of the Saint Louis River (boundary of Wisconsin and Minnesota) 1263 km
- State Line Marker 1481 km
- R.M. Frontier No. 019 15 km
- R.M. White Valley No. 049 54 km
- R.M. Reno No. 051 58 km
- R.M. Arlington No. 079 75 km
- R.M. Grassy Creek No. 078 78 km
- R.M. Val Marie No. 017 82 km
- R.M. Maple Creek No. 111 (part 1) 103 km
- R.M. Bone Creek No. 108 103 km
- R.M. Carmichael No. 109 103 km
- R.M. Piapot No. 110 113 km