Tuesday, November 28, 2023


And the longest RV combo is …

We’ve been asking our readers for photos of the longest RVs and RV combos they’ve seen. This one is the longest by far, so far.

Doug Tolbert, Idaho, built this Powerhouse Coach a few years ago. It’s a 52-foot-long, quad-slide motorhome with the muscle of a semi truck, towing a 38,000-lb. trailer and a boat. With more than 400 square feet, the coach sleeps 8 comfortably. The length of the combo is 122 feet. Doug is the president of Powerhouse Coach, Inc.

Watch the video for a tour of the interior. And thanks to livingboondockingmexico for sending this in (and for their persistence).

If you know of a longer combo, please send it to us here.




0 0 votes
Article Rating
Subscribe to comments
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Oldest Most Voted
Inline Feedbacks
View all comments

Alvin (@guest_61456)
3 years ago

Notwithstanding the nightmare parking this rig, and getting it down the road without incident, I do not get it, never have never will.
The CEO and I have been RVing for over 50 years and delight in watching a rig similar to this drive in park and the slave who drives it set to work, yes work – setting it up, No envy here on my part at all, each to his own, but I have always thought getting away from the humdrum of daily life at home was about leaving something behind you had to preform to make it through a day and RVing alleviated that. Apparently not.
I do appreciate the beauty of this custom, I just think the guy who owns it will wear out keeping everything involved in this complicated rig intact long before his time. Happy trails.

livingboondockingmexico (@guest_61435)
3 years ago

How funny you post this now. I had submitted it three times when the talk began about the longest rv.

Terry (@guest_61425)
3 years ago

Nice RV and good picture but I lived in Idaho most of my life drove truck and hauled over size loads. This RV with would not be legal to drive on the road. 105 feet is the max combination you can drive on Idaho roads. You can get a permit for a longer load if it can not be shortened but because the boat trailer can be removed there is no way to get a permit to tow it.

Don (@guest_60553)
3 years ago

Just wondering…as long as this is (and presumably, illegal in most if not all states), if the driver has an accident, would the insurance company cover it?

Dave J (@guest_59749)
3 years ago

So in what states can he pull that combo (including the boat and trailer)?
I want to be able to triple tow myself (truck, a TT, and boat) but don’t know where I can and can’t.
At present I tow my 5th wheel and a trailer for our UTV and find many restrictions on THAT.

Brenda G (@guest_59740)
3 years ago

How many times must “size doesn’t matter” be reiterated?

Rob (@guest_59577)
3 years ago

Just one question: Why?

Jerry (@guest_59351)
3 years ago

I have no interest period.

Bob p (@guest_59329)
3 years ago

They better stay well into the west as anywhere near the Midwest will be illegal without very expensive oversized permits and escort vehicles, plus being limited to only certain highways. Forget about eastern states, many of those states it’s difficult to maneuver a 70’ truck trailer combination.

Dr4Film (@guest_59279)
3 years ago

There are not that many states that allow for a double tow let alone 122 feet in length. The NYS Thruway would but once you get off, you have to dump one of the towed units as it is illegal on any other roads in NYS. SO the owner is VERY limited as to where they can use this rig.

Wolfe (@guest_59322)
3 years ago
Reply to  Dr4Film

I think you missed that this beast was manufactured as an advertisement for the coach manufacturer — it was never meant to actually be used beyond “kinda sorta could be, because you can’t leave our parking lot…”

I also don’t think it’s a good advertisement in the video — he goes off on the solar going through an inverter to power the TV and laptop, which suggests he doesn’t know those are both DC items that don’t need to go through the double-conversion. If they construct the coach’s power to be inefficient, what else did they not do right behind the shiny veneers?

Dave W (@guest_59257)
3 years ago

Besides needing a CDL, where do you camp, errr, park with that monstosity My guess is that it is never used as such. We have parked all over the US and can’t recall but one CG that might have a site that would contain this …. thing..

Dave J (@guest_59750)
3 years ago
Reply to  Dave W

BLM LTVAs in AZ, Unlimited length as its open desert. Can’t use it in CA as far as I know unless both the trailer and the boat trailer have airbrakes AND the drivers has the appropriate endorsements on a CLD license.

Jeff (@guest_59252)
3 years ago

Calling ahead to an RV Park: “I’d like a Pull Thru Please”! Do you have a space that is 122 ft. long?

Dr4Film (@guest_59277)
3 years ago
Reply to  Jeff

Riverside Casino RV Park in Laughlin NV would have a pull-through long enough to fit this rig. I have stayed there in one!

Wolfe (@guest_59323)
3 years ago
Reply to  Jeff

I’ve stayed in many parks that could fit 122′ if you don’t need to pull through — but they were all back-in sites. I try REALLY hard not to rent sites that are shorter than 75′, whether or not I intend to detach as my way of voting with my wallet against micro-campsites.

The strangest site *I* have stayed in had a 150′ deep x 100′ wide cleared, level pad — after so many jackknifes in the access road that my 35′ TT had trouble making many of the corners without stop-and-look-before-scraping boulders path-plotting. Beautiful site(!) on a breezy cliff over the water, but I won’t return with this trailer!

Mark b (@guest_61541)
3 years ago
Reply to  Jeff

Not only a space that’s 122’ long, but the street that’s wide enough to pull it in!!

Sign up for the

RVtravel Newsletter

Sign up and receive 3 FREE RV Checklists: Set-Up, Take-Down and Packing List.