The TriRock Triathlon takes places Sunday morning and the is reminding motorists to expect bicyclists along East Lake Sammamish Parkway and to drive with caution.
A large number of bicyclists is expected on the street between 8 and 10 a.m. The bicyclists will be pedaling clockwise around Lake Sammamish, the city said.
In Sammamish, they will be heading south on East Lake Sammamish Parkway.
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The TriRock Triathlon is being held at Lake Sammamish State Park. For more information, visit the organizer's website - which lists road closure information in the area.
Sammamish residents who have questions or concerns can contact City Engineer Jeff Brauns at 425-295-0561 or jbrauns@ci.sammamish.wa.us.
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