NC500

The NC500 has been discussed many times. There aren’t many club sites or CLs around the route but consider also C&CC sites and check out UK Campsites for others.

https://www.ukcampsite.co.uk

There aren’t too many eateries in the remote areas so be prepared to do at least some of your own catering.

Internet research should answer most of your questions.

https://www.northcoast500.com

https://www.visitscotland.com/inspiration/touring/north-coast-500

Be aware that 150 miles will take a lot longer once you’re way up north. I suggest it’s too much and you will miss a lot by attempting to travel that far between stops. 

Agree with TW, the driver won’t be seeing much doing 150 miles in a day around the north coast route. You take your eyes off the road at your peril.  Just as a for instance, the 50 miles from Durness to Altnaharra took us 2 hours and 40 minutes of driving, a few weeks ago, just down to traffic on the single track sections, complicated by a few hundred sheep.😂

This is one section of the road between Scourie and Durness. Granted, most is easier than this but it gives you an idea.

Peter, if you want your info in book form it’s here.

Watch out for potholes.
We were travelling towards the Applecross pass and was forced into the side of the road by an oncoming coach. This resulted in a blown front tyre. Cost us £120 to replace and because of the location we couldn't safely change the wheel so has go be flat bedded to the nearest garage.

All part of our holiday memories.

Even where the road has been recently resurfaced the  edges can be an issue.The standard resurfacing method seems to be just to stick a layer on top, leaving a distinct step off, which is not always obvious. Not a major issue on the wider dual tracks, but you need to be careful on the narrow ones, which are only just wide enough for two MH’s to pass comfortably.

Not a pothole in sight.  That looks like good quality Spanish motorway by comparison with some of the "roads" we recently drove down southwest 🤣.    

I wasn’t actually posting about potholes which are a pain nationwide and that pic is 7 years old. I thought Spanish motorways were purported to be better than the A838/894🤷🏻‍♂️

Spanish motorways are very very good and definitely not congested.  My comment was just tongue in cheek.  I wonder if the road in your picture is still pothole free, even so it looks wider than some of the cart tracks classed as roads in the southwest of England.    

They are more or less pothole free, except the edges, but only because there has been a lot of very recent temporary filling. I suppose the main difference between the roads you describe and this one is that it’s the main A road into the area.