"There are no maps. You can't map a sense of humour."Eventually though the Discworld succumbed to cartography.
-- Terry Pratchett, Discworld author.
Typically, there are three kinds of path:
Obvious - Taken by about 80% of your setting population. Clearly marked, maybe with milestones to show progress or landmarks to give navigational reference.
- Predictability - If you take this path, you will get to your destination.
- Ease of Use - This option is the most accessible (otherwise, why use it?) to the majority.
- Opportunities - to reduce inconvenience (avoiding a toll) or reveals benefit (an untended apple tree). This is one of the main reasons for adventure.
- Options - Where the obvious path is obstructed, you have an additional option.
- Speed - Sometimes you're in a hurry. You may not want to meet the travelling gypsies, find treasure or kill a dragon. You might just want to go home.
- Safety - When you absolutely, positively have to get there. Self-preservation is a concern raised in a number of blogs where heroism is tinged with pragmatism.