i think its called 'Special Conditions' in that section of races,you do the 2nd from the top rally,i can confirm thisarvo when i get home,but yeh you do that race then you do the same track backwards just against usually a Lancia or 4wd celica thing both stock once you do both of them u gather about 10,000
then cause you won both races you win some toyota RS rally car worth about 250,000 to sell.
Probly not worth as much as the F1 car but only takes about 5minutes,,,,id say half my playing time would be done on this track.i use this track to test my new cars.
The Endurance races do suck but i;ve done a few,i never thought of the B-spec even though ive used it before,but not for the endurance,anyway i just usually do it in like 10 lap intervals,try to get some friends to help even your girlfriend.lol mines crap but if you get far enough ahead she does alright.