Gambrill State Park features 30 miles of hiking trails near Thurmont, MD.
Gambrill State Park is located approximately 51 miles northwest of Washington, D.C., and 53 miles west of Baltimore on Catoctin Mountain. From U.S. 70, exit onto U.S. Route 40 at Frederick. Travel approximately six miles. Turn right onto Gambrill Park Road and follow it approximately one mile to the park entrance.
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