Brommelsieck Trail is a hiking, biking, and horse trail in St. Charles County, Missouri. It is within Brommelsiek Park. It is 4.0 miles long and begins at 593 feet altitude. Traveling the entire trail is 6.9 miles with a total elevation gain of 719 feet. The Shelter Cluster #2, Group Shelter, and Shelter Cluster #3 shelters are near the trailhead. There is also a parking space. The Shelter Cluster #4, Shelter Cluster #3, Group Shelter, Shelter #7, and Shelter Cluster #4 shelters can be seen along the trail.