garyhaupt & concretejungle: Thanks for reading and leaving comments. We hope that our journey helps describe a journey that is both fun and accessible to many that may think it too hard to accomplish
Wow, I just finished reading about your drive. Sounds like an incredible experience. I'm taking a number of months away from work and am thinking about doing this! I'm curious of your off-roading skill level before you started. If a 'beginner', I guess a person will learn quick?! I have a 2015 Ram 2500 that has a lift kit and MT tires. I haven't read about any vehicle other than your Jeep and the Land Rovers doing it. I see from your experience that there are areas where clearance (height & width) can be an issue. I also paid attention to where you dealt with loose ground and some sharp turns. Overall, how advanced would you rate the trails? Any reason to believe a non Jeep, 4x4 truck will have a problem? Want to join me!?!? Many thanks, Sean
Off-roading skill level: I grew up driving a variety of vehicles off-road, but nothing of this remote type of driving. The biggest thing is to take your time and get any technical lines correct. With that said, you are only looking at maybe 1-5% of the journey being anything nearing technical (poor weather conditions could change this quickly). You will also learn fast.
Dealing with soft terrain: Err to the side of safety on soft mountain-side trails. Get out and walk it, see if you can shovel some snow to get away from the drop-off, etc. There are some muddy sections that are best walked first, especially in wet weather.
Height & width: There is one trail that had a tight section that I might have problems putting a full-size pickup around the hairpin with boulders hemming it in.
I don't have pictures of the turn, but here is the trail marker for the trail. Even thought this trail marker says 648, I actually believe it to be what Google Maps is referring to as BLM 647. If you look at the map, there are other side trails that could also be 648, but it would join with 647 at some point before it goes under I-70 at the low tunnels. Below is a map with this area centered on it.
View on Google Maps
Here are a couple of videos, you can be the judge on whether or not your vehicle will fit through there. It might with mirrors folded in, as long as you don't have much on top.
Now, here's the catch. The new maps of the trail could be slightly different from the maps that we purchased a long time ago. It is still the best idea to use the newest maps, since Sam C. has spent a lot of time making this a workable trail by eliminating sections of private land etc. With this said, there are often "big bike" (since this trail was developed for dual-sport bikes) bypasses that help larger motorcycles find their way around some of the tougher sections. Experience has told me that I can fit my Jeep on the regular trail, but you could just turn around and mostly likely use the bypasses if the trail is not agreeable to your truck. Also, you could simply meet up with the trail at a later point, if it doesn't work for you.