There's a TL;DR one-paragraph-version, jump to the 'short format' (third paragraph)

I wondered about the question (100% on the 28th) and answered it myself. I am sharing it for the curious. the @ signs are cry babies, i.e. I don't know and cannot know how long these take to do without a lot of work. ;) the format is Thing How many levels (time to do it in minutes)

short format: story missions: ~7:00 (1h of which non-any%) TAB-Missions: 1:50 other driving stuff (assets, races, challenges, Stadium, schools): 3:25 export/collectables/properties : 1:30 in total (this is a guess, don’t count on it)

-Collectables (1:20@@) -- Tags (~30@) -- Snapshots (~10@@@) -- Horseshoes (~15@@@) -- Oysters (~25@@@)

-TAB-missions (1:48): -- taxi (50 fares) (40@@) -- vigilante 12lv (5) -- firefighter 12lv (9) -- pimping 10lv (15) -- Paramedic 12lv (18) -- Freight 2lv (18)

-Schools (26) -- driving (5) -- boat (5) -- bike (3) -- flight (13)

-Driving Missions (1:21):

-- Races (1:00) ---- LS (17) ---- Bad Lands (bicycle) (13) ---- SF (20) ---- LV (10) -- Challenges (0:03?) ---- BMX (1) ---- NRG (2?) -- Stadium (18) ---- LS (8-track) (5) ---- SF (chaos ;)) (3 (random? ;))) ---- LV (parkour/dirt track race) (10)

Flying Missions (20): -- School (13, already counted) -- LV airport checkpoint charlie (20)

Other (15) -- Gym Moves (~5??) -- Ammu-Nation Challenges (10)

Assets (1:38) -- Trucking 8 (32) -- Valet 5 (11) -- Quarry 7 (22) -- Courier (33) -- LS (bicycle) 1 -- SF (heavy bike) 9 -- LV (Faggio) 8

Export (3 Lists) (if I know about this, I won’t participate in the race, I’ll better stay ignorant. :D)

Missions (1:01) -- Cesar (10) -- Zero (12) -- Heist (39)