The old 100th Bomb Group Restaurant on the previous alignment of Brookpark Road had a 5 ft. high mound just inside the entrance gate. This was approximately 50 yards (48 m) from the angle of Taxiway Zulu, or 75 yds (70 m) from the threshold of Runway 24R (now 24C, soon to be decommissioned to taxiway status.)
This was obviously close enough to feel the heat of most jet engines, and to get considerable blast from anything the size of or larger than a 727. The United DC-10 that was coming in when I first started spotting at that location nearly blew me off the mound a few times.
This was off the airport property, but only about 15 yds from the perimeter fence.