I don't know if it's true and possible, but somewhere one guy said he advanced to level 50 in three days.
Well, it took me over an hour to get from level 19 to 20. And I used Lincoln Boulevard Sprint because it's nice and fast track (takes only 1:20-1:30 minutes) and has many players so you don't need to wait for an eternity.
In ideal scenario if you are able to hit only first place it's possible to get about 9000 rep points per 15 minutes (with 25% reputation accelerator). But in real life all the starting grids won't start and traffic, magnets and demolitions will push you far from leading. So my average was more like 5000-7000 per 15 minutes. But it's still much more than in pursuits at level 20. I can get only 3000-4000 rep points in 15minute pursuit.
Maybe you have any hints for me, but it's seems that I must throw away my real life to be successful in NFS
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