I guess it's just a different approach. My feeling is always extend the dustance, target places furtger away. Get more miles under your belt and your natural speed will come.I would suggest the exact opposite, but I think I know what you meant. I would target rides of a certain duration, not rides of a certain distance. So target a 30 min ride, a 1hr ride, 2hr ride, etc. The actual distance covered during that time (as a beginner) is not important.
It's very rare to hear peopke on here say "I cycled for 3 hours yesterday" more likely to say " I cycled 50 miles yesterday"