Come run a marathon with the Tunnel Marathons team and enjoy a 5-star marathon experience. Whether your first or 100th marathon, we care about our runners, we care about helping you set a new personal record, and we care about sending you to the Boston Marathon. In 2019 over 590 people (40%!!!) qualified for Boston on this course. Join them!

The Tunnel Light Half Marathon offers a beautiful, fast downhill course on the Palouse to Cascade Trail (part of Washington State Parks) and Snoqualmie Valley Trail (part of the King County Parks). Both trails are the remains of old railroad tracks. The half begins at precisely the halfway point of the full marathon and is point-to-point ending at the finish line of the full marathon. Runners will enjoy an 1100-foot net drop from start to finish. You will be treated to stunning mountain and waterfall views while taking in the sweet Washington air. The half course is USATF certified.

THE COURSE

Half Marathoners will enjoy the same fast, downhill, and beautifully scenic course on the second half of the full marathon course. Half marathon runners DO NOT run through the Snoqualmie Tunnel since it is at the beginning of the marathon course, so there is no need for a headlamp/light. The trail is packed gravel, so both trail and road shoes work great.