I don't know who your usual team is. You will want one other vehcile with you, whose driver is capable and level headed. What tires are you running? Do you have a winch? Do you have recovery straps and shackles? You might need them on JB.
Gold Mtn is a pleasant trail that is interesting, but not particularly challenging. There are only 3 or 4 places that you have to think about your line. Everything else along the way is quite easy.
John Bull on the other hand, is 4 miles of precision driving with very large rocks everywhere. It can be exhausting because you have to stay very sharp all the way through. GM is just a trail, JB is an accomplishment in the LR3.
Scott (Trynian) suggested you run "backwards" from west to east and that's good advice. The gate keeper on the west end is a good representation of obstacles you will encounter along the way. Make it through the gatekeeper and first rock field that is about 1/2 mile after that, and you are fine for the rest of the trail. However, I suggest you warm up on Gold Mountain first. Cruise through that (should take under 2 hours) as a warm up, then drive west along the forest road to the far end of where JB comes out, and run JB backwards (west to east). JB should take you about 3 to 4 hours. I can do it in the Jeep in about 1.5 hours, my last LR trip (large group, including a bone stock DII) took 6.5 hours. The LR3 is way more capable than a DII, so 3 to 4 hours is a good estimate.
Man, I'd love to go with you. I wish I had this weekend open.
Photos:
- Somewhat recent SCLR trip:
http://s57.photobucket.com/albums/g227/adspiker/John_Bull/ (not my photos)
- Two years ago, joint SCLR/FJ Trail Teams run, just JB, east to west:
http://nwoods.smugmug.com/Land-Rover/Off-Roading/John-Bull-Trail-SCLR-and-TTORA/2122917_9wzWw
- Last year, small LR group, Gold Mtn to JB, east to west:
http://nwoods.smugmug.com/Jeep-Adve...John-Bull-Trail/5023816_foRYx#301620225_wtMgN
- Also last year, running east to west, GM and JB, just our Jeep running solo.;
http://nwoods.smugmug.com/Jeep-Adve...n-Bull-Trail-II/5071723_skka7#305281183_dsMGq
Scott has some photos posted on a PhotoBucket site somewhere of his run with a couple of LR3's.
I've done the trail two more times since then, most recently was in August, right after the ATT Club (The WayWeGo's) rebuilt the trail to make it harder. It was really nice then, but in the intervening months I'm sure it's been repaved with people trying to make it easier for the FJ's and side-by-sides and so forth. It is probably pretty easy right now, comparatively.