Glendora is a city in the San Gabriel Valley in Los Angeles County, California, 26 miles (42 km) east of Los Angeles. As of the 2020 census, the population of Glendora was 52,558. The city is known for its beautiful tree-lined streets and is often referred to as the "Pride of the Foothills."

The Colby Trail is a popular hiking trail located in Glendora, California. The summit of the Colby Trail is located at an elevation of approximately 2,500 feet and offers panoramic views of the San Gabriel Mountains, the San Gabriel Valley, and the Los Angeles Basin.

The Cross in Glendora, California is a large, illuminated cross that is located on the top of the hill at the intersection of Grand Avenue and Gladstone Street. The cross stands at approximately 110 feet tall and is visible from many parts of the San Gabriel Valley.

The Punk Out Trail is a popular hiking trail located in Glendora, California. The trail is approximately 2.7 miles long and is considered a moderate hike with some steep sections. The top of the Punk Out Trail offers panoramic views of the surrounding mountains and valleys, including the San Gabriel Mountains, the San Gabriel Valley, and the Los Angeles Basin.