1 Τοιγαροῦν καὶ ἡμεῖς τοσοῦτον ἔχοντες περικείμενον ἡμῖν νέφος μαρτύρων, ὄγκον ἀποθέμενοι πάντα καὶ τὴν εὐπερίστατον ἁμαρτίαν, διʼ ὑπομονῆς τρέχωμεν τὸν προκείμενον ἡμῖν ἀγῶνα 2 ἀφορῶντες εἰς τὸν τῆς πίστεως ἀρχηγὸν καὶ τελειωτὴν Ἰησοῦν, ὃς ἀντὶ τῆς προκειμένης αὐτῷ χαρᾶς ὑπέμεινεν σταυρὸν αἰσχύνης καταφρονήσας ἐν δεξιᾷ τε τοῦ θρόνου τοῦ θεοῦ κεκάθικεν. (Hebrews 12:1-2 NA28)
1 So, therefore, we also, since we are surrounded by such a cloud of witnesses, let use lay aside every weight and sin which so easily ensnares us and so run the race with endurance that is set before us, 2 fixing our eyes on Jesus, the founder and perfecter of our faith, who because of the joy set before him, he endured the cross, despising the shame, and has sat down at the right hand of the Throne of God. (Hebrews 12:1-2 translated from the NA28 Greek text)
In 1978 I decided to become a runner. I was 26-27 at that time. I began running a mile or so out from my apartment in Forestville, Maryland then running back. As I was able, I added distance to that run in half-mile increments on the outbound route. That would add a mile to my run. By late 1979 I was able to run 5 miles in about 30 minutes or so. In 1980 I moved from the Washington, DC area to the Oklahoma City area. By this time my Dad had taken up running. He could not run the distance at my speed, but he could run all day. He ran marathons.