Short & Sweet! One of my favorite hikes in Vegas. Easy enough for beginners but definitely a great work out every single time. I've seen people try to access the trail from the park side; don't do that. Take Las Vegas Vista (off of Alexander) until it ends. Park there. Walk towards the freeway and you'll see the trail head on your right.
Start to finish, this hike usually takes about 30-45 min (if you're lazy like me). It's perfect if you're on your lunch break or short on time. I wouldn't recommend this hike for the kiddos. Razor sharp rocks and an extremely dangerous drop off at the top that would make any mom nervous. Just have them sit this one out. Instead come with friends or even better, go solo. Solitude is necessary sometimes.
The views at the "Top of the Rock" are breath taking. And always worth the hike. You can see the whole Las Vegas valley from up there. My favorite days are when the big fluffy clouds are out. Just be sure to be mindful of the weather. Don't get stuck in a hail storm like I did once. Ouch!