The mark will stand permanently, as this year’s race was the final edition of the 42K event before it becomes a 50K in 2027. View this post on Instagram A post shared by Sinister Sports (@sinister_sports)Last course record over 42KLagos lowered the marathon course record by more than 10 minutes, surpassing Calgary runner Brandon Miller’s 2025 mark of 3:58:46. In the last year this distance will be run, Lagos will remain the final record holder. “Lagos was using the Death Race as a training day, and didn’t even change his weekly kilometres,” Dolson said. “To come in on short notice, break the course record and do it on a course this demanding, was incredibly impressive.