Varies quite a bit but I’d say the few weeks after NCAAs a huge portion of coaches are recovering or on vacation. Some are getting ready for USATF Outdoors if they have athletes qualified.
I’d check in individually with the coaches to see when good times are. Usually they can have an assistant cover if they aren’t there during July or August. Distance coaches are usually back for XC by mid August.
I wouldn’t worry about clinics for distance kids. Some programs have them but they aren’t necessary for recruiting.