2.6
(13)
86
hikers
Railroad Tunnel Trail
02:53
10.3km
240m
Hiking
Embark on a moderate hike along the Railroad Tunnel Trail, a 6.4-mile (10.3 km) route that takes you through a unique desert landscape. You will gain 793 feet (242 metres) in elevation over approximately 2 hours and 52 minutes, following a wide, well-maintained gravel path. The highlight of this journey is passing through five historic railroad tunnels, carved directly into volcanic rock. As you hike, you will experience expansive views of Lake Mead and the surrounding mountains. The trail offers a distinct blend of natural beauty and historical intrigue.
When planning your visit to the Railroad Tunnel Trail, remember that much of the route is exposed to direct sunlight. It is best to hike during the cooler months of the year or to start early in the morning if you visit during summer. The trail is suitable for various activities and welcomes dogs, provided they are kept on a leash. Ensure you bring plenty of water, especially on warmer days, to stay hydrated throughout your journey.
This trail follows an old railroad bed, offering a glimpse into the region's past transportation history. The tunnels themselves are a testament to early 20th-century engineering, providing a unique historical context to your outdoor adventure. Towards the end of the route, you are treated to impressive vistas of the Hoover Dam and the Mike O'Callaghan–Pat Tillman Memorial Bridge. This combination of natural scenery and historical landmarks makes the trail a notable experience in the Lake Mead National Recreation Area.
Last updated: April 23, 2026
Tips
Your route passes through a protected area
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Waypoints
Start point
Parking
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8.32 km
Historical Railroad Tunnels
Highlight • Structure
8.62 km
Tunnel in Lake Mead National Recreation Area
Highlight • Structure
8.79 km
Railroad Tunnel Trail
Highlight • Trail
Tip by
10.3 km
End point
Way Types & Surfaces
Way Types
9.26 km
981 m
< 100 m
Surfaces
7.79 km
1.39 km
599 m
367 m
< 100 m
< 100 m
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Elevation
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Wednesday 6 May
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Max wind speed: 10.0 km/h
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Frequently Asked Questions
Where can I park to access the Railroad Tunnel Trail?
The primary access point for the trail is the Historic Railroad Trailhead, located near the Alan Bible Visitor Center in the Lake Mead National Recreation Area. There is ample parking available at this trailhead.
Is the Railroad Tunnel Trail dog-friendly?
Yes, this trail is dog-friendly! However, please ensure your dog remains on a leash at all times to protect wildlife and for the safety of other trail users.
What is the best time of year to hike this trail?
The best times to visit are during the cooler months of fall and spring. Due to significant sun exposure and very little shade outside the tunnels, summer hikes are best done in the early mornings or late evenings to avoid extreme heat.
Are there any fees or permits required to hike the Railroad Tunnel Trail?
The Railroad Tunnel Trail is located within the Lake Mead National Recreation Area. While there isn't a specific permit for the trail itself, standard entrance fees for the Lake Mead National Recreation Area may apply. It's advisable to check the official NPS website for Lake Mead for current fee information.
What kind of terrain can I expect on the route?
The trail follows an old railroad bed, featuring a wide, well-maintained, and compact gravel surface. It is mostly flat with a gentle grade, making it accessible for various activities. Expect mostly exposed sections with little shade, except when passing through the historic tunnels.
What historical features or landmarks will I see along the way?
The trail is rich in history, following the original railroad bed used for Hoover Dam construction. You'll encounter five enormous, historic Railroad Tunnels carved through volcanic rock. Interpretive panels along the route provide insights into the railroad's history, desert wildlife, and the construction of the Hoover Dam. Towards the end, you'll get spectacular views of the Hoover Dam itself.
Is the trail suitable for beginners or families with children?
Yes, it is widely regarded as an easy to moderate trail, making it suitable for beginners and families. Its wide, relatively flat surface and engaging historical features, especially the tunnels, make it an enjoyable experience for various ages and fitness levels.
What kind of wildlife or plants might I encounter?
You'll experience stunning desert landscapes with plants like creosote bushes, cacti, and Joshua trees. Keep an eye out for desert wildlife such as bighorn sheep, lizards, and various desert birds, especially during cooler parts of the day.
Is the Railroad Tunnel Trail a loop or an out-and-back route?
The Railroad Tunnel Trail is primarily an out-and-back route. It's approximately 3.7 to 4 miles one way, making it about 7.5 to 8 miles round trip. You can turn around at any point, but many hikers go all the way to the Hoover Dam viewpoints.
Are there any facilities or amenities near the trailhead?
The trailhead is located near the Alan Bible Visitor Center, which typically offers restrooms and information. Boulder City, a short drive away, provides options for cafes, restaurants, and other amenities.
What should I bring for a hike on this trail?
Given the trail's sun exposure, it's crucial to bring plenty of water, sun protection (hat, sunscreen), and appropriate footwear. Snacks are also recommended, especially for the full round trip. Don't forget a flashlight or headlamp for walking through the tunnels, although natural light usually suffices.