It's very addictive when you're within striking distance of next level.
It was only a few times and it was back when I was to low level to take down claimed portals.
I'd plan a route to open portals in surrounding towns on the intel map (after farming as many resonators as I could).
Of course I'd be farming while playing the route so I'd always have more resos than I'd planned and the next town "wasn't that far" and "I've already come all this way", etc. etc.
It was only a few times and it was back when I was to low level to take down claimed portals.
I'd plan a route to open portals in surrounding towns on the intel map (after farming as many resonators as I could).
Of course I'd be farming while playing the route so I'd always have more resos than I'd planned and the next town "wasn't that far" and "I've already come all this way", etc. etc.
Forgetting that the drive home was now hella far.