The Rotary Greenway Trail in Peterborough may be called a Park trail as it does go through a few parks, but this bicycle path was once originally a railway line too.
As such expect the bike path to be rather flat and straight with gradual bends in it. This paved wide park/rail trail is easy and never crowded with lights at busy intersections.
Being central in the city of Peterborough it connects to many other paths and there are a few bridges (former train bridges) to get you over the river into downtown.
As a riverside path it’s not as scenic a trail as one would hope. Trees and backyards of homes can block your view of the Otonabee River, but you can still drop down to it at many spots.
And this old rail line does drift away from the shore at times. There are a few century-old homes along the way, if you look for them.
Helpful distance markers along this path tell you how far you have gone and how far to go. Historic, environmental and ecological signage along the way may interest you.
Those who seek more challenging trail can find a few stretches of MTB type single track down closer to the river to try.
By the Trent University campus half way up a new bridge crosses the canal where the old rail bridge used to swing.
The path leads you across the road and through a soccer field to the university grounds, which has beautiful architecture.
This trail does continue from here out of Peterborough to Lakefield for another 8 km north along the river. If ambitious, you can keep on riding for days right out of town on several Rail trails such as the Omemee.
Now that should be enough to get you making plans and give it a spin one day.