Back in '96, my husband & I took a road trip to Area 51. We went up to the border (as far as you can go) by driving down Groom Lake Rd., which leads
off from Hwy 375. Watch out for cows.

On the way down there we saw one of the "cammo dudes" (security people) in a white Jeep Cherokee take off
in a cloud of dust & race towards the base, away from us. We think one of them followed us as we left & headed back toward the highway, but they
didn't bother us.
There's no fence, but plenty of signs warning you not to trespass.
Don't cross the border! You will be apprehended & probably will be in a
lot of trouble.
We also climbed Tikaboo Peak (a good vantage point to see the base in the distance) with Glenn Campbell, who was a well-known Area 51 researcher at
the time. He led hikes up to the peak, but I don't think he's doing that anymore. It was a difficult hike, and we were hurting afterwards, but what
a view!
We lived to tell the tale, and had a lot of good memories too.
Here's a site that has some more info about getting there & what to expect:
www.dreamlandresort.com...