109th meridian west

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The 109th meridian west is a line of longitude that passes over North America and the Pacific Ocean. Most famously, the 109th meridian makes up the east-west borders between Colorado and Utah (between the 37th and 41st parallels), and New Mexico and Arizona (south of the 37th parallel). At the intersection of the 109th meridian and the 37th parallel is Four Corners, the only part of the United States where four states touch.

The 109th meridian west also passes through the states of Wyoming and Montana and the Canadian province of Saskatchewan. It also passes through Mexico and the eastern Pacific Ocean and eventually Antarctica.