I recently asked a MN bicycling group what apps they use to layout trail maps. This is the list they gave me:
I've long used this. Main frustrations are limited number of waypoints, inability to draw segments when Google doesn't know something, and lastly that Google's bike trail knowledge is decaying.
Designed for planning routes and had the most support. It can sync to Wahoo and Strava. Premium $10/month, I don't know if you can do a month and then stop it. The free tier is said to be best of the free options.
Said to be same platform as RideWithGPS. If you pay you can divide a tour into days and see an integrated forecast.
I think this requires the non-free tiers.
This has a pretty complicated web interface. It's ad supported by only $25 US a year to eliminate them.
Also mentioned: MapMyRide and Garmin Connect.