Distance

This 5K Run starts and finishes at the incredible Guinness Open Gate Brewery, and runs under the historic Thomas Viaduct. You can learn more about the Thomas Viaduct here.

Why the Viaduct 5K?

The Friends of Patapsco Valley State Park and Guinness Open Gate Brewery are partners in supporting stewardship and access to Maryland’s first state park! This unique run features one of the most historic and iconic bridges in the U.S.

Please note that there will be an untimed half-mile segment leading to the park entrance, where participants will cross the timing mat. The official timing for the 5K portion will begin at the park entrance.

(Yes, that means you will travel approx. 1/2 mile prior to, and after you run your race distance – think of it as warm up or cool down period! This approach allows us to time the event an ensures the safe crossing of Rt. 1!)

Our Community

We are a community of park stewards and who work collaboratively to support Patapsco Valley State Park. Our programs and events are grassroots, low key and focused on building investment and access for all park users. In 2025, will be using chip timing for the event, a departure from last year when we used “running timing”.

Support your park

We need you! PVSP is one of the most popular and most visited parks in the United States. You will have the opportunity to make a donation during registration, and all proceeds from this event support the park!