Snohomish, United States of America · Sunday 11 October 2026
Snohomish River Run – Sunday, October 11th Experience the magic of fall in the Pacific Northwest at the Snohomish River Run—where crisp autumn air, vibrant colors, and scenic river views come together for an unforgettable race day. Set in the heart of the historic Snohomish Valley, this course takes you along the winding Snohomish River, surrounded by golden farmland, towering evergreens, and the quiet beauty that makes this region so special. Whether you’re chasing a personal best or simply soaking in the scenery, every mile offers a perfect blend of serenity and energy. Feel the rhythm of your stride as the morning fog lifts off the river, the sun breaks through the trees, and the community comes alive to cheer you on. This is more than just a race—it’s a celebration of movement, connection, and the changing seasons. With a fast, runner-friendly course and a welcoming, small-town atmosphere, the Snohomish River Run is perfect for seasoned racers and first-timers alike. Come run where the river flows, the leaves turn, and the miles feel a little more meaningful. Join us on Sunday, October 11th—and make this your most memorable run of the year. Marathon Start Time - 7:30AM Half Marathon Start Time - 8:00AM 10K Start Time - 9:00AM 5K Start Time - 9:30AM
Adjusted Time
1:40:47
Time difference: -4.2 minutes compared to a flat, road, temperate course.
The Snohomish River Run Marathon, Half Marathon, 10K and 5K is a half marathon held in Snohomish, United States of America, scheduled for Sunday 11 October 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level. For registration and full race details, visit the official The Snohomish River Run Marathon, Half Marathon, 10K and 5K website.
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
The Snohomish River Run Marathon, Half Marathon, 10K and 5K is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
Our difficulty rating for The Snohomish River Run Marathon, Half Marathon, 10K and 5K is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare The Snohomish River Run Marathon, Half Marathon, 10K and 5K against other half marathons to find the right race for your goals.
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