The Historic Railroad Tunnel Trail is located near the Alan Bible Visitor Center, about .3 miles beyond the Lake Mead Visitor Center sign, to the right. We parked in the free trailhead lot below the visitors' center. From there we walked up the hill a short distance to get to the old railroad bed. We were there in April and even then it was hot and sunny. This would be a tough walk in mid-summer. Bring plenty of water. I would not take children on bikes because of the steep drop-offs with no guard rails. The views of Lake Mead are spectacular. The 5 tunnels are an instructive historical feature as are the displays along the way. The tunnels carved and blasted out of solid rock provide some welcome shade and it is slightly cooler inside them. There is a picnic shelter with a drinking fountain and toilets at the 2.3-mile point from the parking lot. There is also a gate at this point which is locked at sunset so make sure you are on the correct side of it if you are out at sunset. Listen carefully for the e-bikes coming up behind you. They are pretty quiet but moving pretty fast and they seldom use bells. The total mileage from the visitors center to near the dam is shown on the NPS maps we had to be a 7.5 mi round trip. But you can walk less than that by starting at the visitor center parking lot walking to the picnic area and turning around. All of the tunnels are in that section. For more information https://www.nps.gov/lake/planyourvisit/hikerr.htm

I rode my bike here 3 times already because it’s my favorite bike trail in Vegas. I would recommend you take it clockwise. This trail has up hill climb and down hills. Bring plenty of water.

I took this trail 3 times now. I took my E bike starting at Saddle Island parking lot to River Mountain Trail Loop total miles 37 miles. Bring plenty of water and food.

Trail has a lot of hills I went clockwise it has some fast winding downhills so your breaks need to be in great order because of the steep drop offs on the sides of the trail. The scenery was beautiful in the beginning you could see Las Vegas and Mount Charleston in the middle you can see Lake Mead for quite a ways and towards the end you see Boulder City. All in all great ride can’t wait to do it again.

This was an AWESOME road bike ride! We parked at Railroad Pass and went clockwise. First 13 miles or so were mostly downhill with a few short steep grinders. Towards the end there were like 9 miles gradual, nonstop uphill. Thankfully no more steep grinders! Last few miles were blissfully flat/gentle downhill. We rode on a weekday in March and there were hardly any other people out there. Make sure you check your brakes before you head out because there are a LOT of steep downhill portions.

Love this trail. Earlier reviews state the trail turns to gravel at Paradise. Not so anymore. Trail continues on, over the highway and connects to the 35 mile river loop. Trail is wide--6' at the narrowest and wider than a car in other spots. It is concrete and asphalt. Most street crossings had little traffic. A couple were busy enough to use the flashing warning lights and area residents seemed aware of the bikers and courteously stopped at crosswalks for them. The trail is a slight incline heading southward but mostly flat. I used a little pedal assist on my ebike heading south, especially in wind, but turned it off and pedaled manually heading back north to Acacia Park. No homeless spotted. A few pedestrians and dog walkers but not many. Even on a Saturday only passed maybe 12 other cyclers.

Nice trail follows wash from duck Creek to Nellis and Russell. Pretty clean A few homeless near Boulder highway. Mostly flat slight incline near Nellis. Nice way to get to and from the wetlands.

The signs are pretty straight forward until you get to two spots (located from South to North) SPOT #1 Navigating through Doc Romero park can be confusing since the signs are few and far between. When entering the park from the South, simply stay on the same sidewalk until it forks and then stay left. Follow the path past the restrooms and then do it again following the sidewalk until Cheyanne. SPOT #2 Once you approach Atwood Ave. (first street crossing North of Cheyanne), cross the street and make a right turn. Follow it until you reach Pioneer Way on the left hand side (2nd left once you turn onto Atwood). Follow Pioneer all the way to Gowan Rd.

I liked that there was free parking at the trail head. It’s right before the paid entry point for Lake Mead Rex area. Get there early to get a spot this is a very busy trail. It was flat and well maintained. It was fun walking through historic railroad tunnels. They are currently working on them now. There was plenty of benches provided to sit and rest, enjoy a snack or enjoy the view of Lake Mead.