Oak Glen is a small agricultural community and census-designated place located in San Bernardino County, California, United States. It is situated between the San Bernardino Mountains and the Little San Bernardino Mountains, about 15 miles east of the city of San Bernardino. Oak Glen sits at an elevation of approximately 4,734 feet (1,443 meters) above sea level. The area is known for its apple orchards and scenic rural atmosphere. The community includes several orchards, shops, restaurants, nature trails, and historical landmarks along Oak Glen Road, a scenic loop that stretches about 20 miles through the region. Oak Glen is accessible via the 10 interstate freeway from nearby cities such as Yucaipa and Beaumont, California. The Oak Glen Preserve, managed by The Wildlands Conservancy, is a notable nearby natural area with hiking trails and picnic spots.