Most Grind-Effective Race per event

922
Italy
Naples
MarchingSaint
Hello gentlemen, i was thinking about sorting every professional and endurance race (per event) from the most grind effective to the least rewarding.
Maybe during the discussion i can edit the op and make a list for reference? Of course this is not a "best way to grind for credits" topic it exists already and can be found elsewhere.
By what i've seen the most rewarding race in the endurance league is the Dragon Trail 30 laps event (45 minutes) followed by Mount Panorama ( barely over 50 mins)
I don't remember about the other events, i'll re run them for the sake of discussion but iirc the worst one is Tokyo Expressway being a little more than a full hour (60 mins)

the Porsche cup has Catalunya on top followed by dragon trail. ( i'll attach a duration at a later time for this)
 
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