Snoqualmie Tunnel – Snoqualmie Tunnel loop from Hyak
Snoqualmie Tunnel – Snoqualmie Tunnel loop from Hyak
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Snoqualmie Tunnel – Snoqualmie Tunnel loop from Hyak
01:27
25.5km
210m
Gravel riding
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.
Last updated: June 9, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Start point
Parking
Get Directions
175 m
Hyak Station
Highlight • Rest Area
Tip by
695 m
Snoqualmie Tunnel
Highlight • Structure
Tip by
701 m
Snoqualmie Tunnel
Highlight (Segment) • Structure
Tip by
4.37 km
Snoqualmie Tunnel
Highlight • Structure
Of course no trains anymore.
Closed during the winter months.
Tip by
4.45 km
Snoqualmie Tunnel west entrance
Highlight • Structure
Tip by
7.62 km
Avalanche Shed in Palouse to Cascades State Park
Highlight (Segment) • Monument
Tip by
12.3 km
Palouse to Cascades State Park Trail Bridge
Highlight (Segment) • Bridge
Tip by
18.0 km
Avalanche Avenue
Highlight • Monument
Tip by
25.5 km
End point
Parking
Way Types & Surfaces
Way Types
25.2 km
188 m
< 100 m
Surfaces
25.1 km
268 m
< 100 m
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Elevation
Highest point (790 m)
Lowest point (650 m)
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Weather
Powered by Foreca
Today
Friday 26 June
11°C
5°C
76 %
Additional weather tips
Max wind speed: 18.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Description
If you're looking for a truly unique gravel biking experience that blends history with natural beauty, the Snoqualmie Tunnel – Snoqualmie Tunnel loop from Hyak is an absolute must-do. This moderate 15.9-mile (25.5 km) route, with a gentle 698 feet (213 metres) of elevation gain, can be completed in about 1 hour and 26 minutes, making it an accessible adventure for a wide range of riders. It's perfect for those seeking a distinctive ride without overly challenging terrain, offering a memorable journey through one of the region's most popular trails.
What to expect on Snoqualmie Tunnel – Snoqualmie Tunnel loop from Hyak
This route primarily follows the Palouse to Cascades State Park Trail, a former railway line, which means you'll enjoy consistently gentle grades and a mostly hard-packed gravel surface. The undeniable highlight is the 2.3-mile-long Snoqualmie Tunnel itself, a profoundly dark, damp, and cool passage that maintains a steady 40 degrees Fahrenheit. Outside the tunnel, the scenery shifts to picturesque forested areas, river valleys, and lakes, with occasional glimpses of volcanic peaks and historic trestle bridges. The rail-trail design ensures there are no steep climbs, making this a manageable and enjoyable ride for all skill levels, especially those who appreciate a unique landmark experience.
Planning your visit
The Snoqualmie Tunnel is a seasonal feature, typically closed from November 1st to May 1st due to dangerous icy conditions, so plan your visit accordingly. Even on warm days, the tunnel is significantly cooler and damp, so you'll want to bring warm clothing layers. Crucially, the tunnel is entirely unlit, so multiple powerful lights – both headlamps and bike lights, plus backups – are essential for safe passage. Parking is available at the Hyak trailhead, and arriving earlier in the day is always a good idea during peak season.
- Distance: 15.9 miles (25.5 km)
- Elevation gain: 698 feet (213 metres)
- Difficulty: moderate
- Estimated time: 1 hours and 26 minutes
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