There is a particular pleasure in discovering that a landscape has not read your expectations.
You arrive on the Adriatic with an image in mind. Then the Conero coast offers pale cliffs, wooded slopes and a sea that seems to have taken the colour question personally. The Marche suddenly has your full attention.
I would give it more than a quick stop for the view.
Follow the meeting of green and blue
The protected landscape around Monte Conero includes woodland and Mediterranean vegetation, with holm oak, juniper and strawberry tree among its characteristic plants. Around Sirolo and Numana, the relationship between the land and the Adriatic gives the coast its distinctive shape.
The pleasure of walking here comes partly from that changing relationship. A view opens, disappears behind vegetation and returns from another angle. You begin to understand a coastline by moving through it.
It is a different kind of attention from standing at a lookout. Your body has joined the conversation. The scent of the vegetation, the sound of your steps and the gradual appearance of the sea all become part of what you remember.
Choose the walk that suits your actual day
The most impressive route on somebody else’s holiday is not automatically the right one for yours. I would start with the people travelling: how they enjoy walking, how they cope with heat, how much time they want outdoors.
Then choose a marked route that is open and appropriate for those conditions. Check current park and local visitor information before setting off; access arrangements and path conditions can change. For a more ambitious outing, a local walking guide can help match the route to the group.
A comfortable walk with time to look is a perfectly respectable adventure. You do not need to return exhausted to prove that you experienced nature properly.
You do, however, need suitable shoes, water and a realistic plan for getting back.
Let the coast set the pace
I would build a Conero day around one walk and one other pleasure: a leisurely meal, time in a town, or a beach visit where access is permitted and suitable. Those combinations leave room for the unexpected without requiring the whole day to be improvised.
Sirolo and Numana provide useful starting points for understanding the area. Look at them as places with their own character, rather than simply as pins beside a beach photograph.
There is a temptation to collect viewpoints as efficiently as possible. Resist a little. Choose one and stay long enough to notice a detail you missed on arrival.
Perhaps the colour changes as a cloud moves. Perhaps the woodland is more varied than it first appeared. Perhaps your travelling companion finally stops discussing tomorrow’s schedule.
I would count all three as excellent developments.