2010-2011 GNCC / MSXC CoSanction Class Layout
| BIKE CLASSES | Displacement | MSXC Class |
| 1 PM PRO RACE (3 hr) | ||
| XC1 Pro | 122cc-Open | AA |
| XC2 Pro Lites | 122-250cc | AA |
| Open A | 251cc-Open | AA, Heavy A |
| 250 A | 201-250cc | |
| 200 A | 122-200cc | Light A |
| 4-Stroke A Lites | 122-300cc 4-Strk | Light A |
| Vet A (30+) | 122cc-Open | Vet A (30+) |
| Senior A (40+) | 122cc-Open | Senior A (40+) |
| Open B | 251cc-Open | Open B, 4 Stroke B |
| 250 B | 201-250cc | 250 B |
| 200 B | 122-200cc | Light B |
| 4-Stroke B Lites | 122-300cc 4-Strk | Light B, 4 Stroke B |
| Vet B (30+) | 122cc-Open | Vet B (30+) |
| Senior B (40+) | 122cc-Open | Senior B (40+) |
| 10 AM AMATEUR RACE (2 hr) | ||
| Women | 105cc-Open | |
| Women Junior (25+) | 105cc-Open | |
| Masters A (50+) | 122cc-Open | |
| Masters B/C (50+) | 122cc-Open | Masters (50+) |
| Golden Masters (58+) | 122cc-Open | Golden Masters (55+) |
| Super Senior A (45+) | 122cc-Open | Super Senior A (45+) |
| Super Senior B (45+) | 122cc-Open | Super Senior B (45+) |
| Open C College (14-21) | 251cc-Open | Open 4 Stroke C (14-21) |
| Open C Junior (22+) | 251cc-Open | Open 4 Stroke C (22+) |
| 250 C | 201-250cc | 250 C |
| 200 C Schoolboy (12-15) | 122-200cc | 200 C (12-15), Junior MC (12-15) |
| 200 C (16+) | 122-200cc | 200 C (16+) |
| 4-Stroke C Lites | 122-300cc 4-Strk | 0-300 4 Stroke C |
| Vet C (30+) | 122cc-Open | Vet C (30+) |
| Super Vet C (35+) | 122cc-Open | Vet C (35+) |
| Senior C (40+) | 122cc-Open | Senior C (40+) |
| Super Senior C (45+) | 122cc-Open | Super Senior C (45+) |
| Sportsman A | Non-points paying class | |
| Sportsman B | Non-points paying class | |
| Trail Rider | Non-points paying class | |
| 8 AM YOUTH RACE (1.5 hr) | ||
| Super Mini (14-15) | 79-112cc 2-Strk; 75-150cc 4-Strk | Junior A (14-15) |
| Super Mini (12-13) | 79-112cc 2-Strk; 75-150cc 4-Strk | Junior A (12-13) |
| 85 (14-15) | 66-85cc | |
| 85 (12-13) | 66-85cc | Junior B (12-13) |
| 85 (7-11) | 66-85cc | Junior B (7-11) |
| 65 (10-11) | 52-65cc | Mini A |
| 65 (7-9) | 52-65cc | Mini B |
| Trail Rider (7-15) | 70-150cc 4-Strk Air-Cooled | |
| Non-points paying class | ||
| ATV CLASSES | Displacement | MSXC Class |
| 1 PM PRO RACE (2 hr) | ||
| XC1 Pro | 201-450cc | Pro |
| XC2 Pro Am | 201-450cc | Pro, Pro Am |
| College A (16-21) | 201cc-Open | Open A (16-21) |
| Junior A (22+) | 201cc-Open | Open A (22+) |
| Vet A (30+) | 201cc-Open | 30+ A |
| Senior A (40+) | 201cc-Open | |
| College B (16-21) | 201cc-Open | 16-20 B |
| Junior B (22+) | 201cc-Open | 21-29 B |
| Vet B (30+) | 201cc-Open | 30+ B |
| Senior B (40+) | 201cc-Open | 40+ |
| 10 AM AMATEUR RACE (2 hr) | ||
| Women | 201cc-Open | |
| Super Senior (45+) | 201cc-Open | |
| Masters (50+) | 201cc-Open | 50+ |
| 4x4 Open | 561-850cc Utility w/ Racks | |
| 4x4 Lites | 201-560cc Utility w/ Racks | |
| 4x4 Super Senior (45+) | 201-850cc Utility w/ Racks | |
| 4x4 Novice | 201-850cc Utility w/ Racks | |
| U2 | 201-840cc Utility Unlimited; No Racks | |
| Sport (15+) | 201-400cc | |
| Schoolboy (13-15) A/B | 91-200cc 2-Strk; 91-300cc 4-Strk | |
| Schoolboy (13-15) Novice | 91-200cc 2-Strk; 91-300cc 4-Strk | |
| 16-19 C | 201cc-Open | 16-19 C |
| 20+ C | 201cc-Open | 20-24 C |
| 24+ C | 201cc-Open | 25-29 C |
| 30+ C | 201cc-Open | 30+ C |
| 35+ C | 201cc-Open | 30+ C (35+) |
| 40+ C | 201cc-Open | |
| Women Novice (15+) | 201cc-Open; Beginner and Novice level 15 year-old 201cc-400cc | Women |
| First Year Racer (16-24) | Non-points paying class | |
| First Year Racer (25+) | Non-points paying class | |
| Sportsman A | Non-points paying class | |
| Sportsman B | Non-points paying class | |
| 8 AM YOUTH RACE (1 hr) | ||
| Girls (8-15) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 90 Open (12-15) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 90 Open (8-11) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 90 Mod (12-15) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 90 Mod (8-11) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 90 Limited (11-15) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 90 Limited (8-10) | 71-90cc 2-Strk; 75-125cc 4-Strk | |
| 70 CVT (6-11) | 51-70cc CVT only |
updated: 4/26/2011