No question that most indoor antennas are for "local" channels. 100 miles is a stretch for any antenna. With my 8-bay antenna properly coupled with a large, older "winged" (my term) 100-mile antenna plus amplifier AND a rotor, I could pull in stations from Charlotte 100-125 miles away to the SW. (Our home in the woods really was difficult. Pointing it at a huge oak which was directly in the transmission path was worse than the same roof antenna pointed 20 degrees more north.) Also keep in mind that generally reception will be better if your transmission stations are "uphill" from you. Hard to go uphill from the beach
. (In reality, all your stations are "level" from your location.) Our 500 ft elevation did better when the antenna was focused at transmissions that were at 600+ feet than those that were 250 ft.
It's really amazing the complications the arise with OTA. Cities with their high buildings present all sorts of trouble.