So unless you set a waypoint halfway between every single entry/exit, it will want to get off the parkway and take US 321 instead.
You can manually set up the route using a bunch of waypoints, but then it tells you the distance/time to next stop (which are arbitrary map points) instead of the distance to the end of the parkway, and you can't save the route so you'd better not touch it or want to look at anything else on the map once you have it set up.
I got increasingly frustrated looking for a replacement that I made https://plotalong.app in my spare time so that my wife and I could plan and save our motorcycle trips together. We still have to add the occasional “via” waypoint but it’s leagues better than Google maps at sticking to the scenic route
I need to update the marketing site and get new users into the map faster, but if you want a quick way in here’s an actual trip I took last year and spruced up to serve as a demo https://plotalong.app/maps/5c735b43-cb84-5a7b-8976-2d4e0c383...
New features and improvements come out regularly so if you have any suggestions send me a message
If you're ever near the Smokies, here's a loop from Knoxville through Foothills Parkway (west section), Tail of the Dragon, and Cherohala Skyway, with a detour up to Maple Springs Overlook (site of a popular annual hill climb).
https://plotalong.app/maps/b53f3c01-4e3c-4b52-a560-4a3259e08...
I will make a native iOS app, but probably only after this summer roadtrip season passes. as far as CarPlay goes, I'll have to find a way to test that first (all my cars/bikes have "dumb" head units). I have the site added to my homescreen on my iPhone and it works for me at least, same thing on desktop I installed the PWA with Chrome and have it in my dock
you're right that other providers don't understand through-waypoints. it's more problematic for groups than individuals, but I haven't wanted to take on live navigation yet because it's so hard to do right and to do real world testing. I could just trust Mapbox to be good enough with their Directions API, but then I'm not adding that much value and so I'm still going with planning/collaborating as my primary focus and encouraging folks to export to google/apple maps or their GPS for now. thanks for all the suggestions!
https://developer.apple.com/documentation/carplay/using-the-...
Between the three roads on my map I'd have to recommend Cherohala Skyway as my favorite drive. Only done it once, but it's a beautiful fun road with great scenic overlooks. Longer and more relaxing than Tail of the Dragon, and I'd rate it more enjoyable if not as exciting.
That's a car-based opinion though, can't speak to motorcycles.
https://www.visitmonroetn.com/cherohala-skyway
EDIT - a couple questions on pricing:
1) If I do one month on the paid plan to create a route, then cancel the subscription, do I still keep the route I made? Can I share and export, but no edits? Or can I still edit existing waypoints, but not add new ones? Realistically this is something I'd only use once or twice a year so I want to understand how the subscription structure fits with that.
2) How do collaborators work? I'm guessing only the route creator need a paid account, and other people can join it from free ones, but it would be helpful to clarify.
When you're working on the iOS app let me know if you need a beta tester!
regarding (1), yes, you keep the routes you made even after your subscription ends. the limits revert to the free tier so if it had more waypoints or was longer than that then you just can't add or move waypoints. removing waypoints to get back down below the limit works and you still export your trip to formats included in your tier (e.g. google/apple/waze)
you could absolutely pay for a month just to plan and export all your trips for the year, bookmarking them with google maps or saving the files for your GPS for instance -- not a problem. I am currently exploring alternatives to monthly & annual subscription schedules to further support seasonal usage, too
per your 2nd question, that's correct, only the creator needs to pay to have 2+ collaborators. you can try it out on the free tier with 1 person at first to see if it works for you. if you just want to share maps publicly you can do that without subscribing, too
Especially on the elevation view would be neat to see it color coded by which parts are which road.
Might help incentivize premium upgrades too because there's a benefit to putting waypoints at actual meaningful locations instead of playing "how can I maximize the route control with 8 points." Or heck that's enough of a cosmetic thing that you could just make the color editing part of the premium plans.
A minor bug report - the verification email said the link was good for 24 hours but when I tried to click it yesterday evening it was already dead.
Similarly, on a motorbike I'd choose some particular roads for more fun, but that also requires committing the route to memory.