Welcome to the Siuslaw Dunes! These beautiful trail runs offer early season, dog-friendly 50K and 25K races that traverse a wild tapestry of coastal terrain, including ancient open sand dunes with “tree islands”, old growth rainforest, stream fords and remote ocean beaches. Located just south of old town Florence, Oregon, the races start and finish at historic Honeyman State Park, offering camping, lakeside charm and our gateway to the Oregon Dunes National Recreation Area. There is no other running event like this one anywhere— we are overjoyed to offer this truly special, one-of-a-kind race opportunity!

Oregon’s central coast harbors a unique mosaic landscape of ancient forests, ocean and sand dune ecosystems known as the Oregon Dunes National Recreation Area. Within the mighty Siuslaw National Forest (pronounced sigh-YEW-slaw), the ever-changing Oregon Dunes are the largest expanse of coastal sand dunes in North America, offering dynamic scenery as well as opportunities for both adventure and solitude. 

Upcoming Races

Mar 12 2022
50 KM
This is an incredibly diverse course and there is nothing else like it anywhere, so bring your sense of adventure to the coast and LET’S DUNE THIS! The Siuslaw Dunes 50K course (31.2 miles) offers magnificent views on a lollipop-loop style course along open dunes, forested single track trails and remote ocean beaches. The course is dog-friendly, so bring your leashed, capable adventure pup with you. Runners travel through an assortment of ecological zones, including lush old growth coastal rainforest, riverside estuaries, freshwater lakes, as well as a fascinating transition zone between the dunes and the ocean called the deflation plain, which teems with water-loving plants and animals, especially amphibians and migratory birds.
2,750 2,750 ft.
Lollipop Course
5 Aid Stations
8 :00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts


50 KM View course top times

Date Finishers Top Result (M) Top Result (F)
03/06/21 Race Cancelled
03/07/20 97 4:14:39 5:19:01
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information. If you see an error, please let us know

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