- About Us
Mercer Island Rotary run registration is open now
Registration is now open for the annual Mercer Island Rotary Run Half Marathon, to benefit colon cancer research and early detection.
The races include a half-marathon run/walk (13.1 miles), a 10k run (6.2 miles), a 5k run/walk (3.1 miles), and the Kid’s Dash of (½ mile). Online registration at mercerislandhalf.com has begun and continues through March 20. Entry forms are also available Club Emerald on Mercer Island.