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Hiking trails & Routes
United States
Washington
King County

Iron Goat Trail to Twin Tunnels

Easy

4.9

(6708)

7,290

hikers

Iron Goat Trail to Twin Tunnels

00:30

1.90km

30m

Hiking

Embark on an easy hike along the Iron Goat Trail to Twin Tunnels, a gentle 1.2-mile (1.9 km) route that takes about 30 minutes to complete. You will gain a modest 98 feet (30 metres) in elevation, making it accessible for most. The path winds through lush Pacific Northwest forests,…

Last updated: April 23, 2026

Tips

Your route passes through a protected area

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Waypoints

A

Iron Goat Interpretive Site & trailhead

Highlight • Rest Area

At the Iron Goat Interpretive Site, you will learn a lot about the history of the Great Northern Railway that once rode along the mountains. There is an old locomotive …

Tip by

1

1.85 km

Old railroad tunnel

Highlight • Structure

The former railroad tunnel is part of the Iron Goat Trail. It is not safe to go into the tunnel, so the trail will likely end at this point. There is an information board providing some facts about the tunnel.

Tip by

B

1.90 km

End point

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Way Types & Surfaces

Way Types

1.88 km

< 100 m

Surfaces

1.86 km

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Elevation

Elevation

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Weather

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Today

Thursday 16 July

24°C

12°C

52 %

Additional weather tips

Max wind speed: 14.0 km/h

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Frequently Asked Questions

Where can I park to access the Iron Goat Trail to Twin Tunnels?

The primary access point is the Iron Goat Interpretive Site & trailhead. There is a dedicated parking area here, which serves as the starting point for exploring the trail's historical and natural features.

Is the Iron Goat Trail suitable for beginners or families with young children?

Yes, a significant portion of the trail is considered easy and family-friendly. The lower section, which follows the old railway bed, has a gentle grade, is wide, and made of packed dirt and gravel. This part is largely ADA-accessible, making it suitable for wheelchairs and strollers for approximately three miles. However, an 'upper loop' exists which is rougher and steeper, so choose your route based on your group's ability.

What kind of terrain can I expect on the trail?

The trail primarily follows an old railway bed, offering a relatively flat and consistent grade. The surface is mostly packed dirt and gravel. You'll hike through lush Pacific Northwest forests of western hemlock, Douglas fir, and western red cedar, with occasional mountain views of the Alpine Lakes Wilderness peaks across the valley. Small waterfalls and creeks are also present.

What historical features or landmarks can I see along the route?

The trail is rich in railroad history. You'll encounter numerous remnants of the Great Northern Railroad, including old tunnels and snow sheds built to protect trains from avalanches. The Old railroad tunnel, specifically the Twin Tunnels, are a key attraction. Interpretive signs along the way provide fascinating details about the railway's construction and the tragic Wellington Disaster of 1910.

Is the Iron Goat Trail dog-friendly?

Yes, dogs are generally allowed on the Iron Goat Trail. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all hikers. Please remember to pack out any waste.

Do I need a permit or pay an entrance fee to hike this trail?

The Iron Goat Trail is located within the Mount Baker-Snoqualmie National Forest. While there isn't a specific entrance fee for the trail itself, a Northwest Forest Pass or America the Beautiful Pass may be required for parking at some trailheads within the National Forest. Always check current regulations before you go.

What is the best time of year to visit the Iron Goat Trail to Twin Tunnels?

The trail is accessible for much of the year, but the best time to visit is typically from late spring through early fall (May to October). During these months, the weather is generally mild, and the trail is clear of snow. Winter visits are possible but can involve snow and ice, especially on the upper sections, requiring appropriate gear.

Does the trail intersect with other well-known paths?

Yes, the route primarily follows the Iron Goat Trail itself. However, for those looking for a more challenging option, there is also the Windy Point Cross Over Trail which connects to the upper grade of the Iron Goat Trail.

How long does it typically take to hike the Iron Goat Trail to Twin Tunnels?

The time it takes depends on how far you go. The section to the Twin Tunnels and back is relatively short. For the full experience, including the historical sites and the Twin Tunnels, a round trip on the lower, easier section can take a couple of hours. If you explore the longer loops or the steeper upper grade, it could take half a day or more.

What should I bring for a hike on the Iron Goat Trail?

Even for an easy hike, it's wise to bring water, snacks, and appropriate layers of clothing for varying weather conditions. Sturdy walking shoes are recommended. Given the historical nature, a camera is great for capturing the old railway structures. If you plan to explore the tunnels, a headlamp or flashlight is essential, though caution is advised when entering them.

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