Mount St. Helens Spirit Lake Memorial Highway (WA-504)
High-speed, sweeping mountain highway built post-1980 eruption leading straight into the blast zone. Features huge engineered viaducts, canyon bridges, and spine-tingling views right into the steaming volcanic crater.
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The undisputed epicenter of motorcycle culture in the eastern United States, sitting at Mile 0 of the Tail of the Dragon (US-129). An electric, adrenaline-fueled carnival of sportbikes, adventure tourers, and interstate cruisers. Smells of warm tire rubber, two-stroke exhaust, and hickory smoke.
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Frequently Asked Questions
How many curves and miles is Mount St. Helens Spirit Lake Memorial Highway (WA-504)? ▼
Mount St. Helens Spirit Lake Memorial Highway (WA-504) spans 52 miles and packs approximately 230 curves (4.4 curves per mile) with an elevation delta of 100 ft - 4,200 ft and technical rating 7/10.
Where are the start and end coordinates? ▼
The route starts at Castle Rock (I-5), WA (Latitude 46.2754, Longitude -122.9079) and finishes at Johnston Ridge Observatory, WA (Latitude 46.2755, Longitude -122.2172).
How can I download the GPX file for GPS navigation? ▼
Click the "Download Free GPX" button on this guide. The standard XML file is 100% free and ready to load into Garmin zūmo, BMW Motorrad Connected, Rever, Scenic, or Google Maps.