Which type of bike is the right for these conditions?
It sounds like what you want is a gravel or adventure bike.

There is not a distinct category, and different manufacturers use different names, but the basic attributes you are looking for are:


Road bike style frame, ISO 622 rims, drop bars
Clearance for up to about 40mm tires
Disc, linear pull (V) or cantilever brakes
Slacker steering geometry
More relaxed body position


There is a blurry line between this type of bike and a cyclocross bike. True cyclocross bikes have recently moved to 1x11 drivetrains. Unless you live in a very flat area you should opt for a bike with a double front chainring.

There are offerings from many manufacturers with aluminum and carbon fiber frames (and some steel) at a variety of prices. You can also look for a used bike.