how to find dirt roads for running?

Move to Michigan

Try gravelmap.com

Drive around for 10 hours.

Your mother always had a liking for the dirt road

I don't see a difference. You mean a fire trail? Fire trails are trails that are meant for service vehicles so they're wide.

are you presneting a proposal?

Gravelmap is a good one. You can also try komoot. Sometimes I look for cyclists' gravel routes on komoot and take gravel sections from them

Besides what has been mentioned, take forest service maps, both national and state, and google the roads. If its a good spot to run or ride, chances are someone has blogged about it at some point or at least posted somewhere. If not, you may find some places that are gems by trial and error. The hard part is figuring out how to get a car there and where to park, then finding roads that end up being overgrown.

Google maps?

AllTrails.com?

Not really a reliable indicator if roads are runnable or dirt. Even if it shows a trail, you need another resource too, but it's pretty good for finding city bike paths and greenways.

I’ve been on this search locally, as well.

In addition to the other resources people have mentioned, you can look at the street view on Google Maps. You can check out remote roads if Google’s cars have driven them, to see whether they’re gravel. You might also look at places where the street view ends: around here, that’s often where the Google Street View car turned around because the road transitioned from asphalt to gravel, and you can see it in the street view image.

Step 1: Move to Rural Upstate NY (Finger lakes region, Southern Tier, Allegheny plateau region)

Step 2: run from your front door

Just download the roads dataset from your state DOT. Will have an attribute for surface type. Then you can just throw it into your favorite mapping program and color it categorically by surface attribute.

This is what I found after minute of searching

data-pennshare.opendata.arcgis.com

Pennsylvania Local Roads

Pennsylvania Local Roads

Open link

Have you tried the Gaia app?

Connect with mountain bikers in the area of interest. They know the dirt roads.