Walk, run, bike, skate or scooter to explore Issaquah looking for as many of 30 checkpoints as you can in 90 minutes or three hours, individually or in a team of up to five people of any age. Bring a watch and pens/pencils to fill out your checkpoint sheet. A magnifier to see details on your map, additional maps of the area and a compass may be helpful but aren't required. Orange safety vests are available to borrow while navigating through town and fun costumes are encouraged. Registration opens 8:30 a.m., instructions at 9:30 a.m., start 10 a.m. Sunday, Issaquah Salmon Hatchery, 125 W. Sunset Way, Issaquah; $5-$25. Information on future events, including the July 28-29 Seattle Night & Day street scramble, available online: www.streetscramble.com.