Cascade Express Marathon
Cascade Express Marathon race day weather
Cool conditions, mild tailwind
Runners will face a steady temperature rise from 51°F at the start to 55°F by the finish. With light winds from the NNW, a tailwind will assist in the early miles before shifting to headwinds through the later segments. Runners should maintain a steady pace and stay hydrated, particularly as they navigate headwinds from miles 6 to 10 and 19 to 22, ensuring they conserve energy on those stretches.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Cascade Express Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Cascade Express Marathon race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the Cascade Express Marathon
The Cascade Express Marathon and Half Marathon run point-to-point on the Palouse to Cascades Trail, starting at Hyak Trailhead near Snoqualmie Pass and descending through the Cascade Mountains past Keechelus Lake to North Bend. The half marathon enters the historic 2.4-mile Snoqualmie Tunnel about half a mile after the start. The marathon's net elevation loss is kept under 1,500 feet so no Boston Marathon downhill time penalty applies. Both distances are USATF-certified and organized by Run Super Series.