If you have a park, canal or riverside near you chances are there is a suitable path you can use.
Working out where to go is probably the biggest barrier to people getting moving. There are many route planner options and a quick search online will give you an idea of what’s out there and what is useful to you.
Two examples are Mapometre or Plotaroute.
These not only provide you with a route you can navigate via your phone, they provide route profiles so you know where the hills are! Whatever your level, setting challenges is useful to stay motivated, so it’s good to create a circular route.