It’s fitting that heart-shaped Lake Union is the natural pulse of Seattle and at the near geographic center of the city. Carved by the receding Vashon Glacier nearly 14,000 years ago, the lake was called “meman harishu,” or Little Lake by the Duwamish people who inhabited the area.
The Cheshiahud Lake Union Loop, named for a late-19th century member of the Duwamish, encircles the entirety of the lake, and rounds out to a neat 10K distance. The path is regularly used by runners and walkers.