1
hikers
07:10
14.3km
1,110m
Hiking
The Castle Traverse is a difficult hiking route that takes you through the rugged Tatoosh Range, offering dramatic vistas of Mount Rainier. You will cover 8.9 miles (14.3 km) and gain 3651 feet (1113 metres) in elevation, making this a challenging day out. Expect sections of alpine scrambling as you…
Last updated: April 23, 2026
Tips
Includes segments that are highly dangerous
Parts of this route comprise highly technical, difficult, or hazardous terrain. Specialist equipment and prior experience is required.
After 8.72 km for 1.62 km
After 14.1 km for 254 m
Waypoints
Start point
Parking
Get Directions
2.34 km
Highlight • Mountain Pass
Tip by
4.53 km
Highlight • Viewpoint
Tip by
7.99 km
Highlight • Lake
Tip by
8.62 km
Highlight • Lake
Tip by
11.6 km
Foss Peak
Peak
13.0 km
Highlight • Summit
14.1 km
Highlight • Summit
Tip by
14.3 km
End point
Way Types & Surfaces
Way Types
7.76 km
3.38 km
1.94 km
920 m
281 m
< 100 m
Surfaces
12.8 km
829 m
361 m
280 m
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Elevation
Highest point (1,930 m)
Lowest point (1,390 m)
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Weather
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Today
Wednesday 6 May
13°C
3°C
0 %
Additional weather tips
Max wind speed: 10.0 km/h
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This route was planned by komoot.
The Castle Traverse is a challenging hike, featuring significant elevation gain and sections of alpine scrambling. You should be prepared for varied terrain, including scree slopes and exposed rock. Some parts may involve Class 3-4 scrambling, and depending on your comfort level, you might encounter sections where a rope for belay or a handline could be useful. Early season hikes may also involve snow, so an ice axe could be beneficial.
While rated as 'difficult' due to its length, elevation, and scrambling sections, the Castle Traverse is considered a good introductory trip for those looking to experience alpine scrambling. However, hikers should have moderate fitness, be comfortable with exposure, and ideally have some prior scrambling experience. It's not recommended for absolute beginners to hiking.
The Castle Traverse is located within Mount Rainier National Park. Specific trailhead parking information can vary, but its accessibility from a trailhead contributes to its popularity. It's advisable to check the official Mount Rainier National Park website for the most current parking regulations and availability, especially during peak season.
Yes, as the Castle Traverse is located within Mount Rainier National Park, you will need to pay the park entrance fee. Additionally, depending on your specific route or if you plan to camp overnight, wilderness permits may be required. Always check the official Mount Rainier National Park website for the latest fee and permit requirements before your visit.
The best time to hike the Castle Traverse is typically during the late summer and early fall months, from July through September, when snow has largely melted from the higher elevations. Early season hikes (June) might still encounter significant snow, requiring an ice axe and potentially other mountaineering gear. Always check current trail conditions and weather forecasts before heading out.
This traverse offers spectacular views and passes by several notable features. You'll experience breathtaking vistas of Mount Rainier, especially from viewpoints like Reflection Lake View of Mount Rainier. The route also takes you past serene alpine lakes such as Bench Lake and Snow Lake, and ascends to summits like The Castle and Pinnacle Peak, often crossing Pinnacle Saddle.
No, dogs are generally not permitted on trails within Mount Rainier National Park, including the Castle Traverse. Pets are only allowed in developed areas, on paved roads, in campgrounds, and on specific paved trails. Service animals are an exception. Always check the park's official pet regulations before bringing your dog.
Yes, the route also passes through sections of the Unicorn Peak trail, the Pinnacle Peak Trail, Lane Peak, Snow Lake, and Bench Lake trails, offering a comprehensive experience of the Tatoosh Range.
Given the difficult rating and alpine scrambling, you should bring sturdy hiking boots, plenty of water, high-energy snacks, navigation tools (map, compass, or GPS), sun protection, and layers of clothing suitable for changing mountain weather. Depending on the season and your comfort with scrambling, a helmet, gloves, and potentially an ice axe or microspikes might be advisable. Always carry a first-aid kit.
To make the most of your Castle Traverse experience, consider starting early in the day to allow ample time for the challenging sections and to enjoy the views without rushing. Given the potential for exposed scrambling, it's wise to go with experienced partners or consider hiring a guide if you're new to this type of terrain. Always check the weather forecast, as conditions can change rapidly in the mountains.