Of-irnan. i

According to the Old English Dictionary:

of-irnan. I

to overtake (by running) :-- Færþ hé (the evening star) æfter ðære sunnan, óþ hé ofirnþ ða sunnan hindan, Bt. 39, 13; Fox 234, 2. Ðæs wítegan cnapa, Gyezi, ofarn Naaman, Homl. Th. i. 400, 17. [Þe abbed æfter Uortiger rad & sone gon ofærne Uortigerne, Laym. 13149.] II. to tire with running :-- Hé wæs swíðe ofurnen he was very tired with running, Jud. 4. 19. of-irnan