Some National lands have hotlines you can call with information about the status of the trails. Or, the staff/owners of local horsecamps can suggest trails to take or avoid based on weather and footing conditions.
For example, Shawnee National Forest in southern IL will close sections of trail in the Lusk Creek area if there has been a lot of rainfall, so that can impact your plans for the day (or week). I still have their number on my phone and I haven’t even been there in almost three years.
And, the staff at East Fork Stables in TN will pull out a trail map and show you if there are any trails you might want to stay away from. Generally, most horse-people are happy to share info about the condition of the trails, suggest their favorites and warn you away from others.
My SO’s version of getting trail information is to call the owner of a horsecamp and ask “should I bring my gaited horse or my mule to ride the trails there?”:lol: