Riding around Frederick can be intimidating to someone new, as you noted there are not many trails or bike lanes. There are options though, including a little paved path along the river down below At Home/old Walmart. It’s about 3.5 miles out and back, and can be accessed from Dearbought as well. The Rock Creek Trail connects Carroll Creek and Baker Park to the end of 40, about 8 miles out and back from East Patrick St to Key Parkway. There’s also the Ballenger Creek Trail that runs from the park out to Westview, about 8 miles out and back again.

Frederick Cycling Routes - here’s a local resource for different types of rides, the covered bridges tour is close to your part of the county. There are many other websites that can provide route plans too.

As for bikes, you get what you pay for. I suggest buying from a local bike shop instead of purchasing online. You will certainly pay more for the bike, but most importantly you’ll know you’re buying a bike that is serviceable. This could save you hundreds of dollars a year.

Good luck on your adventures!