OR CDL General Knowledge Marathon
Original questions by our team Based on 2026 OR CDL Handbook
Ready for one final challenge? This Oregon CDL General Knowledge Marathon is a new study tool that contains all 693 questions from our database for this OR endorsement. If you select a wrong answer, we’ll remember that question and will display it to you again at the very end of the Marathon until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the state’s “regular” tests, but before the “Exam”. Delivers some serious studying power! Do your best to complete this mega test!