I've read through Chapter 1 of Icewind Dale: Rime of the Frostmaiden and have not found any guidance on how to judge distances between the settlements of Ten-Towns.
Other than a good old fashion ruler compared to the map scale, is there a quick way to determine the distances between the settlements of Ten-Towns?
The actual travel time by road is discussed in the section for each town, but the introduction says, in the section Overland Travel (pg. 11):
Travel is less time-consuming on the snowy roads and trails that connect the settlements of Ten-Towns, as discussed in chapter 1.
So it is not enough to know the travel time via dogsled and convert to miles. We should expect it to take less time when traveling on roads, but it is never explained how much less, so the travel times are insufficient for guessing distances without use of the map scale.