An active getaway is easy to over-schedule. Trying to fit a hike, a bike ride, a kayak trip, and sightseeing into two days usually means doing all of them poorly and coming home more tired than when you left. A better approach picks one or two anchor activities and builds the rest of the weekend loosely around them.
Choosing a location for its trail system, its coastline, or its bike paths - rather than trying to find somewhere that offers everything - usually leads to a better trip. A place that does one active option really well beats a place that offers five options at a mediocre level.
A common planning mistake is scheduling something physically demanding for both days back to back. Alternating a harder day with a lighter one (a big hike Saturday, a relaxed walk and good food Sunday) keeps the trip enjoyable instead of turning it into an endurance test.
Book any gear rentals (bikes, kayaks, boards) in advance for weekend trips, since availability at popular outdoor destinations disappears fast. Checking trail or park closures a few days ahead also avoids arriving to find your planned route unavailable.