Exploring Lake Union: Top Pontoon Boat Routes

Dec 03, 2025

Discovering Lake Union by Pontoon Boat

Lake Union, nestled in the heart of Seattle, offers a unique blend of urban and natural beauty. Exploring its calm waters by pontoon boat is an experience like no other. Whether you're a local or visiting for the first time, this guide will help you navigate the top routes and make the most of your adventure.

lake union boat

The South Lake Union Loop

The South Lake Union Loop is perfect for those new to pontoon boating. This route offers a scenic tour of the bustling South Lake Union area, home to iconic landmarks such as the Museum of History and Industry (MOHAI) and the vibrant waterfront parks. As you glide through the water, you'll have a stunning view of the Seattle skyline.

Here’s a quick itinerary to enjoy this route:

  • Start at the South Lake Union dock.
  • Pass by MOHAI and enjoy the waterfront architecture.
  • Circle back through the marina for a complete loop.

Exploring Portage Bay

For those looking for a more tranquil experience, Portage Bay is a hidden gem. Known for its serene environment and abundant wildlife, this area offers a peaceful escape. You might spot herons, ducks, and even the occasional beaver as you gently cruise through its waters.

portage bay wildlife

Here’s how to make the most of your Portage Bay exploration:

  1. Enter Portage Bay from the main lake.
  2. Slow down to enjoy the natural surroundings.
  3. Consider stopping for a picnic at one of the nearby parks.

Heading Towards Gas Works Park

No trip around Lake Union is complete without a visit to Gas Works Park. This unique spot offers a juxtaposition of industrial history and lush green space. Dock your pontoon nearby and take a walk up the hill for a panoramic view of the city.

gas works park

Noteworthy stops along this route include:

  • Take in the views at the park’s summit.
  • Explore the old gasification plant structures.

Sunset Cruise on Lake Union

End your day with a breathtaking sunset cruise. The golden hour on Lake Union is magical, with the sun setting behind the cityscape, casting a warm glow over the water. A sunset cruise is ideal for capturing memorable photos and enjoying the tranquil ambiance.

To plan a sunset cruise:

  1. Set out an hour before sunset.
  2. Cruise slowly to take in the changing colors.
  3. Bring along snacks and drinks for a relaxing evening.

Final Tips for Your Pontoon Adventure

Before setting out, make sure to check the weather and prepare accordingly. Safety is paramount, so ensure all life jackets and safety equipment are on board. With these routes and tips, you’re set for a fantastic day on Lake Union. Enjoy the journey and the stunning sights that this beautiful lake has to offer!

seattle skyline lake