River Mountains Loop Trail
River Mountains Loop Trail
2.5
(29)
79
riders
04:43
71.3km
980m
Cycling
Cycle the challenging 44.3-mile River Mountains Loop Trail for stunning views of Lake Mead, Hoover Dam, and historic railroad tunnels.
Last updated: February 26, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Lake Mead National Recreation Area
Waypoints
Start point
Parking
Get Directions
16.3 km
Highlight • Monument
Tip by
27.7 km
Highlight (Segment) • Trail
Tip by
32.9 km
Highlight • Monument
Tip by
48.5 km
Highlight (Segment) • Historical Site
Tip by
71.3 km
End point
Parking
Way Types & Surfaces
Way Types
54.9 km
7.94 km
4.30 km
4.17 km
< 100 m
Surfaces
35.7 km
26.0 km
9.11 km
471 m
< 100 m
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Elevation
Highest point (810 m)
Lowest point (320 m)
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Weather
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Today
Thursday 7 May
33°C
21°C
0 %
Additional weather tips
Max wind speed: 12.0 km/h
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This route was planned by komoot.
For touring cyclists, completing the full 34-35 mile loop generally takes around 4-5 hours. This duration accounts for the trail's continuous uphill and downhill sections and allows time to enjoy the scenery and notable features.
The trail is a 12-foot wide, paved surface, but don't let that fool you into thinking it's flat. It features continuous uphill and downhill sections, making it quite hilly and curvy. You'll encounter switchbacks, drainage canals, and even tunnels. Some sections, like the 'Three Sisters' around mile marker 6.5, have grades up to 7.8%.
You'll be treated to panoramic views of Lake Mead and rugged desert landscapes. Key highlights include the historic Railroad Tunnel Trail, which features five tunnels used during the Hoover Dam's construction, and the impressive Hoover Dam itself. You'll also pass through the Boulder City Historic District and might spot the Giant Bicycle monument.
The trail is well-maintained with multiple access points. You can find parking in Henderson, Lake Mead National Recreation Area, and Boulder City. These various trailheads make it easy to start your ride from different locations around the loop.
The best time to cycle is typically during the cooler months, from fall through spring (October to April). Summers can be extremely hot, making the ride much more challenging and potentially unsafe due to the desert environment. Early mornings are also recommended to avoid the midday heat, especially during shoulder seasons.
Yes, dogs are generally allowed on the trail, but they must be kept on a leash. Remember to bring plenty of water for your pet, as the desert environment can be harsh, and shade is limited.
A portion of the trail runs through the Lake Mead National Recreation Area. While the trail itself doesn't require a separate permit, there may be entrance fees to access certain areas of the park, depending on your entry point. You can find detailed information on fees and regulations on the official NPS website: nps.gov.
Yes, the trail is equipped with accessible pit toilets and trash receptacles at various points. You'll also find self-service bike repair stations, which are very helpful for minor adjustments or fixes during your ride.
Some cyclists find riding the loop counter-clockwise to be slightly less strenuous, as it can distribute the more significant climbs differently. However, if you're looking for a challenge, riding clockwise will present steeper grades, particularly in sections like the 'Three Sisters' where grades can reach up to 7.8%.
Yes, the route incorporates sections of several other trails. You'll find yourself on parts of the Union Pacific Railroad Trail, Boulder Highway Trail, Railroad Tunnel Trail, and the Historic Railroad Trail, among others, as you navigate the loop.
While paved, the trail is considered a 'moderate challenge' for touring cyclists due to its consistent elevation changes and hilly, curvy nature. Beginners on traditional bikes might find it quite demanding. If you're new to cycling or prefer a less strenuous experience, consider renting an electric bike to fully enjoy the ride.