Ranch to Market Road 337 or RM 337 is a Texas state road that runs from Camp Wood east to Medina. The route was designated in 1945 between Camp Wood and Leakey in Real County, but was gradually extended eastward over the years until in 1968 it stretched to RM 187 at Vanderpool

Vanderpool, Texas

Vanderpool is a small unincorporated community in Bandera County in the U.S. state of Texas, in the Texas Hill Country, which is part of the Edwards Plateau. It lies west of Bandera. Hunting, ranching and tourism are chief contributors to the regional economy. Vanderpool had a population of 22 in...

 in Bandera County. In 1976, an additional 9.7 miles (15.6 km) were added east from RM 187 to connect to SH 16 in Medina, bringing the road to its present form.

Passing through the canyonland of the Texas Hill Country

Texas Hill Country

The Texas Hill Country is a vernacular term applied to a region of Central Texas featuring tall rugged hills consisting of thin layers of soil atop limestone or granite. It also includes the Llano Uplift and the second largest granite monadnock in the United States, Enchanted Rock, which is located...

 northwest of San Antonio, RM 337 is renowned for its hairpin switchbacks and extreme natural beauty; it has been called one of the most scenic drives in Texas. Texas Monthly

Texas Monthly

Texas Monthly is a monthly American magazine headquartered in Austin, Texas. Texas Monthly is published by Emmis Publishing, L.P. and was founded in 1973 by Michael R. Levy, Texas Monthly chronicles life in contemporary Texas, writing on politics, the environment, industry, and education...

 magazine named the road no. 18 on its list of "75 Things We Love About Texas" in its April 2006 issue.

Junction list

County	Location	Mile	Junction	Notes
Real	Camp Wood	0.0		Western terminus
	Leakey Leakey, Texas Leakey is a city in and the county seat of Real County, Texas, United States. The population was 387 at the 2000 census. A U.S. Census Bureau estimate of July 1, 2008, placed the population at 359....	21.0
Bandera Bandera County, Texas Bandera County, formed in 1856 from Bexar and Uvalde counties, is a county located on the Edwards Plateau in the U.S. state of Texas. As of 2000, the population is 17,645. Its county seat is Bandera. Bandera is named for the Spanish word for flag...	Vanderpool Vanderpool, Texas Vanderpool is a small unincorporated community in Bandera County in the U.S. state of Texas, in the Texas Hill Country, which is part of the Edwards Plateau. It lies west of Bandera. Hunting, ranching and tourism are chief contributors to the regional economy. Vanderpool had a population of 22 in...	36.1		Western end of RM 187 concurrency
		37.2		Eastern end of RM 187 concurrency
	Medina Medina, Texas Medina is a census-designated place in Bandera County, Texas, United States. The population was 2,960 at the 2000 census. It is part of the San Antonio Metropolitan Statistical Area...	57.4		Eastern terminus

Note that the total mileage when listed by junctions does not agree with the total mileage certified by the Texas Department of Transportation

Texas Department of Transportation

The Texas Department of Transportation is a governmental agency in the U.S. state of Texas. Its stated mission is to "work cooperatively to provide safe, effective and efficient movement of people and goods" throughout the state...

because the TxDOT number does not include concurrencies.