Three Rivers Marathon Swim
- Aug 29, 2026
- Last edition date
- Distance: 30km
About the race
The waters of Pittsburgh are defined by the convergence of three distinct arteries, each demanding a different rhythm from the marathon swimmer. At the heart of the city, the current is generally mild, but as you traverse the Ohio, Monongahela, and Allegheny, the environment shifts. While the Ohio reach toward Brunot Island is often calm, the Monongahela and Allegheny channels are subject to wind-driven chop and the unpredictable wake of commercial and recreational boat traffic. Navigating this 30K course requires a steady 4-hour 10K pace to meet the strict 12-hour cutoff, ensuring you clear the rivers before the water turns to the dim light of dusk.
A swim through history
As you sight your line, you are effectively swimming through the cradle of 18th-century frontier conflict. Your start and finish at the fountain in Point State Park place you right where the struggle for control of the Ohio Valley unfolded. Beneath the water's surface at the Point lie the archaeological footprints of the 1754 Fort Duquesne and the subsequent British Fort Pitt, their foundations mapped out on the shore in granite. You will pass the 1764 Block House, the only structure from that era still standing, which served as a redoubt during some of the most desperate times in colonial history.
History here is not abstract; it is recorded in the soil you leave behind at the start. The region was the site of the 1763 Siege of Fort Pitt, where desperate British measures, including the distribution of smallpox-contaminated blankets, marked a dark chapter in the conflict between the garrison and Native American forces. Even the early landscape of the city was marked by the 1755 Battle of the Monongahela, a defeat that saw a young George Washington gain his first real experience in the brutality of expeditionary warfare. As you head out, remember that you are tracing the same path taken by the Lewis and Clark expedition, which launched its historic keelboat journey from these very banks in 1803.
The skyline and the river
Between the turns, you can look up from your stroke to witness the 'Golden Triangle', a dense cluster of 30 skyscrapers that defines the city's modern character. The U.S. Steel Tower stands as the dominant feature of this skyline, rising hundreds of feet above the river level and providing a constant navigational landmark. The event is logistically supported by a mandatory two-kayak escort system, ensuring safety across the busy channels. With proceeds benefiting the Forever Fund at the UPMC Children’s Hospital, the race carries a weight beyond the physical 30K challenge of these three rivers.
Sources: Pittsburgh · Fort Pitt (Pennsylvania) · Fort Duquesne · Fort Pitt Block House
Course
30K course covering three rivers: 10K in Ohio River (out-and-back to Brunot Island), 10K in Monongahela River (to Hot Metal Bridge), and 10K in Allegheny River (to 40th St Bridge). Starts/ends at Point State Park fountain.
Aid stations
Swimmers are fed from a designated kayak. Additional supplies are carried on a second support kayak.
Previous editions
How to get there
Three Rivers Marathon Swim
Where to stay
Pittsburgh offers a variety of stays ranging from historic boutique hotels in the Downtown and Strip District areas to modern riverfront suites. Expect to find high-end metropolitan hotels starting at $180–$300 per night, with more modest options further from the downtown core ranging from $120–$160. Many swimmers opt for rentals near the North Shore for proximity to the race launch. For those seeking a quieter environment, the neighborhoods surrounding the university district provide smaller inns and guest houses that are well-connected to the waterfront parks.
Things to do nearby
A race weekend here is best paired with the city's industrial and cultural heritage. Explore the extensive trail systems along the riverbanks by bike or kayak, or visit the museums dedicated to the region's steel-making past. The Strip District is the primary destination for local food tours, featuring diverse markets and roasting houses. For a change of pace, the incline railways offer panoramic views of the entire river confluence, providing a unique vantage point of the three rivers you have just finished swimming.
Swimmers
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