Annie's Canyon Trail, also known as Annie's Canyon Loop Trail, is a popular hiking destination located in San Diego County, California. The trail is named after the small canyon that it passes through, which is also known as "Miniature Grand Canyon" or "Annie's Slot Canyon".

The trail is a moderate 1.5-mile loop that takes visitors through the narrow sandstone walls of the canyon, up to the ridge overlooking the San Elijo Lagoon, and back down to the starting point. The canyon walls are around 100 feet high in some places, and visitors must navigate through tight spaces, including a narrow slot canyon that requires some scrambling.

The trail is considered a great place for a family-friendly hike, but visitors should be aware that there are some steep sections and tight spaces that may not be suitable for young children or people with mobility issues. The trailhead is located at the San Elijo Lagoon Ecological Reserve and parking is available nearby. Visitors are advised to bring plenty of water, wear sturdy shoes, and be respectful of the natural environment.