Bought my '93 4Runner with 246,000 miles on it (all Colorado miles). That's right. I took it to 300,000 and got rear ended. It still runs like a top and never fails to start. Had a friend buy a '93 Blazer at the same time I bought my 4Runner . . . I towed him to the shop 3 times and it didn't feel like I was pulling anything. Only drawback is it's a little underpowered in the top end, don't expect to rocket up the hills, but mountains are no challenge.
Reliability, haven't come across the terrain this thing can't handle, 3 feet of snow or heavy off roading. What a vehicle!