dynamicWatch's Route Planner is a free tool that lets you create hiking, running and cycling routes for your Garmin GPS in a fast and simple way. Although the priority for Planner is to keep it simple, we have added a few advanced tools for dynamicWatch Premium users, such as heatmaps of your routes.
A heatmap lets you view all the routes in any of your Route Collections (collections are one of the most useful features of Premium) as a transparent orange overlay on the map while you work in Planner. These then act as a guide for which roads and trails you like to use: you can rapidly click to build routes using these same roads/trails -- or perhaps for variety you'll use them to find roads that you've not yet used in a route.
Upgrade to Premium now and make creating routes for your Garmin with Planner even faster!