Open Water Swim #3 - Innsbrook Resort

The water here is still, carrying the quiet history of a landscape shaped by both industry and ancient heritage. As you pull through the surface of Lake Aspen, you are swimming in a 236-acre expanse that has only existed since the turn of the millennium. This man-made reservoir, the largest within the private community of Innsbrook, lacks the sediment-heavy churn of the nearby Missouri River, offering a controlled environment that feels worlds away from the river’s currents. The Open Water Swim #3 - Innsbrook Resort focuses on this serenity, providing a space where the primary challenge is your own stroke efficiency rather than the elements.

Looking beyond the shoreline, the horizon hints at the broader Missouri Rhineland, a region defined by its long-standing viticulture that stretches toward Marthasville. While you focus on the sighting buoys, your peripheral vision catches the rolling topography of Warren County, a territory named for General Joseph Warren, who met his end during the Battle of Bunker Hill. The land around you carries layers of deeper time; before the wineries and the resort, this region was shaped by the Mississippian culture, whose people constructed massive ceremonial mounds starting in the 9th century.

This event is designed for accessibility and skill-building, with optional clinics led by Coach Sally Drake that cover essentials like navigation and managing the psychological pressure of a race start. Because it is a private lake setting, the logistics are straightforward, allowing the organizers to maintain a secure environment with lifeguards and support swimmers on hand. Wetsuits are welcome, providing extra buoyancy for those who prefer them. For those who find themselves training for larger, more intense challenges, local athletes often use this series to prepare for events like Swim Across America — St. Louis. Whether you are aiming for a quick session or a long-distance endurance effort, the flexible 5:30 PM start time accommodates the summer schedule. You can plan your stay with ease by checking our recommended local lodging, and once you have dried off, explore the region's history by visiting our curated selection of nearby activities.