
ALL CLASSES ARE MODIFIED CLASSES, UNLESS OTHERWISE SPECIFIED AS BEING A STOCK CLASS. SEE RULE BOOK FOR MORE INFORMATION.
AMATEUR CLASSES
50cc 4-6
50cc 7-8
50cc open thru 8
65cc 6-8
65cc 9-11
65cc open thru 11
85cc open thru 11
85cc 12-15
85cc open thru 15 NEW!!!
Supermini open thru 15
Women
Schoolboy
Open Amateur
Open Beginner
250cc Novice
250cc Intermediate
450cc Novice
450cc Intermediate
30+ B
40+ B
45+ Open
PRO-AM CLASSES
250cc Pro-Am
450cc Pro-Am
Open Pro-Am
30+ A
40+ A

GATES OPEN
Friday: 6:00pm - 10:00pm
Saturday: 7:00am - 10:00pm
Sunday: 6:00am
REGISTRATION
Saturday: 6:00pm - 8:00pm
Sunday: 7:00am - end of practice
PRACTICE
Saturday: 8:00am - 2:00pm
Sunday: 7:00am - 8:30am
1. Pro/Int
2. Novice/Schoolboy
3. Beginner
4. PeeWee (Note: seperate PeeWee track @ Billings)
5. 65cc
6. 85cc/Supermini
7. Vet/Women
*Big bikes / little bikes on Saturday morning until rider attendance increases, then switch to scheduled practice listed above.
RACING
Sunday: 8:30am - 5:00pm
*Cash or check only at events. Cards accepted only online at this time.
GATE ADMISSION
Adults: $10.00
Kids, 10 and under: Free
*Everyone must purchase a wristband for Saturday and Sunday when entering. If you plan to leave and not stay for Sunday, you will be allowed a refund up until 7:00pm on Saturday. You must have your wristband to be allowed a refund. Otherwise no refunds will be granted on gate admission.
PARKING & CAMPING
Free
SATURDAY PRACTICE
Rider: $20.00
SUNDAY RACE
Amateur: $30.00/class
Pro-Am: $35.00/class
*Beginner is FREE for any 1st Big Sky MX race, $30.00/class thereafter.
*Big Sky Motocross Challenge membership required for all classes.
*Race entry fee refunds will be granted if event is officially cancelled prior to the start of practice. Otherwise no refunds will be granted.
MEMBERSHIP
Season Membership: $25.00
Single-day Membership: $5.00
*No additional charges for entering multiple classes.
*Season Members are eligible to receive race day awards and series points and awards.
*Single-day Members are eligible to receive race day awards only.
AMATEUR CLASSES
Top 33.3% overall finishers per class are eligible to receive awards.
50cc CLASSES
All finishers per class are eligible to receive awards.
PRO-AM CLASSES
100% payback of Pro-Am entry fees.

*Season Members are eligible to receive race day awards and series points and awards.
*Single-day Members are eligible to receive race day awards only.