BAY TO              

BALTIMORE

2025  

Katie Pumphrey’s Bay to Baltimore swim made history in 2024! Tackling this swim for a 2nd time is not just a personal challenge—it’s about continuing to celebrate our city’s progress and supporting the movement toward a cleaner, more accessible waterfront for everyone.

Distance: 24 miles

Start: Sandy Point State Park at the Chesapeake Bay Bridge

Finish: Harborplace Amphitheater in Baltimore’s Inner Harbor

Swim window: May 18-23, 2025

~12am start time. Estimated 12-14 hour swim, based on Katie’s typical swim pace. Wind, tides, & conditions will impact this greatly.

This swim will again follow the rules of the Marathon Swimmers Federation (MSF). An observer will document and verify the swim’s adherence to MSF rules and regulations. Data collected from Katie’s 2024 and 2025 Bay to Baltimore swims will help support the goal of making the Bay to Baltimore swim an annual event for marathon swimmers. 

Katie’s 2024 MSF report here.

All swim details and updates will be posted on this page, including and a tracker link will be shared so you can follow along in real time!

We invite everyone to follow this swim, cheer Katie on, and join us at the finish line to celebrate!

Katie Pumphrey

”To be the first person to do this swim in 2024 was incredible. That swim made history and was truly the greatest experience of my life. To be able to continue to celebrate and highlight Baltimore through my sport is an honor and a dream come true.”

Waterfront Partnership of Baltimore

Katie Pumphrey’s 2025 Bay to Baltimore Swim is in collaboration with the non-profit organization Waterfront Partnership of Baltimore Inc, which has served as our city’s advocate, promoter, and steward for the waterfront since 2005.

Dedicated to enhancing and promoting the waterfront district, parks, and public spaces, Waterfront Partnership creates welcoming programs, events, and recreational experiences while working toward a healthy harbor. They are committed to fostering connections among diverse communities to ensure equitable access to our blue and green spaces.

Mr. Trash Wheel is part of Waterfront Partnership’s signature programs, a famous Baltimore icon, social media celebrity, local landmark, and part of the semiautonomous trash interceptor family in the Baltimore Harbor and surrounding waters!

Mr. Trash Wheel himself will join Katie for the last stretch of the swim and escort her into Baltimore’s Harborplace! We invite the public to join us all at the Finish Line to celebrate a healthier harbor and cheer Katie into the finish!

Water Quality

Waterfront Partnership’s Healthy Harbor Initiative works to restore and protect our City’s most valuable asset—the Baltimore Harbor. Our human affinity for nature, fostered by a direct emotional connection with the marine environment, will restore the balance between our city, the Patapsco river, and the Chesapeake Bay. Through Healthy Harbor projects, programs, and partnerships, they are educating the public about what lives beneath the surface and how we can all fight for the urban ecosystem through the actions we take. Clean water means cleaning and greening neighborhoods, and a healthy harbor equals a healthy city.

Weather and rainfall play a big role in determining the swim day for Katie Pumphrey’s Bay to Baltimore Swim. Like in any body of water, we should not swim in the 48 hours after a heavy rainfall, as runoff and overflow from heavy rains impact water quality. Baltimore’s harbor is testing at safe levels to swim on “dry days,” meaning outside of the 48 hours following heavy rainfall. This data has been studied closely by Waterfront Partnership’s Healthy Harbor Initiative.

The Waterfront Partnership of Baltimore collects water samples from 5 sites in the Harbor 5 days a week. Samples are taken to ZooQuatic Lab to be analyzed according to the EPA's Recreational Water Quality Criteria.

“I hope this swim continues to inspire others to celebrate the progress of Baltimore’s harbor and embrace the possibilities for cleaner, more accessible waterfront for everyone.”

Katie Pumphrey

Katie Pumphrey, 37, is Baltimore-based interdisiplinary artist and ultramarathon open water swimmer.

In June 2024, she became the first person to complete the 24-mile "Bay to Baltimore" swim from the Chesapeake Bay Bridge to Baltimore’s Inner Harbor. Katie’s other notable open water swims include two English Channel swims (2015, 2022), around the island of Manhattan (2017), and two Catalina Channel (2018, 2024). Those three swims make up the Triple Crown of Open Water Swimming, making Katie the 194th person (73rd woman) in the world to achieve that honor.

When not training or coaching other swimmers, Katie is a full-time visual artist. Her large scale paintings and sculptures are deeply connected to swimming, and her experiences in the water continue to drive and greatly influence her work. 

Katie lives in Baltimore City, Maryland with her husband Joe and their dogs, Adja.

About Katie

Katie Pumphrey

“Not only is it my hope to do this swim many times in my lifetime, it is my goal to make the Bay to Baltimore Swim an annual event for other swimmers. I want to continue to put Baltimore on the map, not only for this sport, but as an amazing city to visit. Doing this swim for a 2nd time, and forming BOWS is an exciting step towards that goal. ”

There is GoFundMe set up to support Katie’s 2025 season. 10% of these proceeds will be donated towards creating a new Baltimore-based nonprofit organization, Baltimore Open Water Swimmers (BOWS), with the vision of fostering community and an exciting future for open water swimming in Baltimore.

Freedom Boat Club

To help ensure a safe and successful swim, Katie’s team will include 8-10 people, including a kayaker, and two support boats. The boats provided by Freedom Boat Club, will be piloted by alternating captains, Todd Nicusanti and Allan Rex from FBC.

“Freedom Boat Club is thrilled to have the opportunity to support Katie and her team, helping to raise awareness about all the great experiences on the water, in and around the City of Baltimore.” — Freedom Boat Club

Sponsors & Partners

Thank you to all sponsors & partners, as well as individual donors! The journey of this swim, and all of the training and steps it takes to get there, wouldn’t be possible without your generous support!

Sponsorships & Partnerships directly contribute towards the costs of the Bay to Baltimore swim, including, but not limited to, logistical support, media and film coverage, digital assets, equipment, supplies, travel and lodging expenses, as well as costs associated with all swims in Katie’s 2025 season, in which she will continue to promote Baltimore as a new destination for open water swimmers. This sport is one that requires a lot of support, time in training, and a team to make it a success.

Contact Katie directly at pumphreykatie@gmail.com.

Contact Katie

Contact Katie directly at: pumphreykatie@gmail.com or via form —>