An 11 way tie is possible:
11 players score 2528:
4 players finish 1st, 3rd, 11th and outside the points twice12th: 15 + 10 + 02 + 01 = 2528
4 players finish 2nd, 5th4th, 8th9th and outside the points10th: 12 + 89 + 54 + 03 = 2528
2 players finish 4th5th twice, 6th, and outside the points7th twice, : 98 + 98 + 76 + 06 = 2528
1 player finishes 6th and 7th thricein each race: 7 + 67 + 67 + 67 = 2528
with last place finishing 6th, 7th and outside the points twice8th in each race: 75 + 65 + 05 + 05 = 1320