I did a metric century or more every Saturday and Sunday from late March into early April on a fully rigid mountain bike with 1 inch slicks. Once the roads were cleaner I brought out my nicer bikes. A high performance hybrid will more than do the job. I did a 154km ride in June on a Cannondale F4000 mountain bike with 1.5 inch slicks in 5 hours 20 something minutes. Your hybrid will do just fine with a more upright riding position to enjoy the view. Just bring enough liquids and food calories along to get the job done.
Just imagine it with 1 inch slicks.
I did a non-stop 154km ride on this mountain bike in June with the shown tires. Averaged 28.5kph for the ride.
Your Hybrid will do 100km or more just fine. The more important question is will you?