Version used:
Super Hang-On (W) (REV0) [!]
Edit since I forgot to mention it like a fool: this starts from a save state made from the previous inputs of the Beginner course file of mine.
There is some noticeable parts where I intentionally drive into the shoulder. This is to slow down for the much tighter truns that are becoming more frequent.
For reference, the RTA world record is 3:35.36 and the total best RTA is the same from what I could find.
Stage times
Final stage time approximated by subtracting the sum of the other stage times from the displayed course time.
Stage 1 - 34.00 sec Stage 6 - 31.80 sec Stage 2 - 31.30 sec Stage 7 - 35.10 sec Stage 3 - 30.93 sec Stage 8 - 34.70 sec Stage 4 - 36.53 sec Stage 9 - 30.16 sec Stage 5 - 32.13 sec Stage 10 - 34.23 sec Displayed IGT - 5:30.88 Sum of second fractions of stages 1-9 - 3.65 seconds Actual IGT - 5:27.23
YouTube encode available here.