A fine assortment of early opinions on [the henge] is fortunately available. Thomas Pennant, journeying north, wrote of it in 1769, "Some suppose this to have been designed for tilting matches, and that the champions entered at each opening. Perhaps that might have been the purpose of it: for size forbids one to suppose it to be an encampment." Four years later, however, he visited the Thornbrough henges (all three are very similar) and changed his mind, deciding that they at any rate, were designed for holm-ganga, or single combat in the Norse style, with the contestants entering at either side and spectators thronging the bank. He cites Saxo Grammaticus to illustrate this, and he adds, "I daresay the ring near Penrith, in Cumberland" (i.e. King Arthur's Round Table) "was formed for the same purpose."

Hutchinson, who had also visited the Round Table by 1773, noted: "We were induced to believe this was an antient tilting ground, where justings had been held: the approaches seemed to answer for the career, and the circle appears sufficient for the champions to shew their dexterity in the use of the lance and horsemanship: the whole circus being capable of receiving a thousand spectators on the outer side of the ditch."
Pennant was not the first to record the tradition of "tilting" at the Round Table. Bishop Gibson, a century before, had suggested "Tis possible enough that it might be a Justing-place...