Fourth Dimension Racing will be hosting a local marathon on Oct. 23, starting at Marymoor Park and winding around the East Lake Sammamish trail and back. The course will be very flat, fast and on mostly on a smooth gravel surface. Registration fees are $65 if registered before Oct. 22 and $75 on site if not sold out. Half-marathon registration is $50 and $60 onsite.

For more information or to register, visit www.evergreentrailruns.com/oct-23rd-lake-sammamish-half-marathon-and-marathon or contact Roger Michel at roger@4thdimensionracing.com.