Round 5 - Thunder Valley GP

August 1 - 2nd, 2026 | morrision, CO

Presented by Slavens Racing

Before You Can RACE - Get These Done First

Pre Entry Only
AMA Membership
AMA - Annual Waiver
Pro / AA Purse — $500 + 100% of Entry Fees back to 30%

Venue

Thunder Valley MX Park

701 S. Rooney Rd, Lakewood, CO 80465

Track includes Vet-Type MX & off-road terrain

Schedule

Saturday — August 1
7:00 AMSign-Up Opens
9:00 AMRiders Meeting
Race 1Mini 4 (7–11) / Mini 4 / Super Mini
Race 2Women Beginner / Women Vet Beginner
Race 3Mini 3
Race 4Quad Mini 1 & 2
Race 5Mini 2
Race 7Mini 1
3:00 PMVintage Race
Spectators FREE Saturday
Sunday — August 2
5:30 AMSign-Up Opens
7:00 AMPractice — all “C” classes
8:00 AMC250 / Youth / Unclassified
9:15 AMC Open / C Vet / Sportsman
10:30 AM60+ / Women / Electric / Vintage / 40+ 150
11:45 AMC Senior 40+ / C Super Senior 50+ / C 55+ SS / SUP 65+
1:00 PMPractice — A/B
1:30 PMA/B Race
3:00 PMPractice — Quads
3:30 PMQuad Race

Entry Fees

Pre-Entry Fees
Saturday Jr Race Fee$35
Saturday 2nd Class$25
Vintage Race$45
Sunday Fee (online)$65
Pro Fee (online)$70
Sunday 2nd Class$30
Post / Race Day Entry Fees
Saturday Race Fee$45
Sunday Fee$70
Pro Fee$75
Non-Member Fee (incl. #'s & transponder)$15

Gate Fees

General Admission — $15 / person
4–12 yrs — $10 / person
3 & Under — FREE
Saturday Spectators — FREE
CORCS is an AMA Sanctioned Organization. All riders must have proof of a current 2026 Annual AMA Online Waiver and current AMA Membership completed prior to check-in.
Get AMA Membership  ·  Complete Annual Waiver

Before Race Day — Please Read

Important Rules & Reminders

Absolutely NO pit riding of any kind. No golf carts, no SxS vehicles, no pit bikes, no electric bikes. Only racers actively heading to or from the start may ride — do not ride up to the sign-up location.

All Riders Meetings are held at the starting line prior to Parade Laps. Plan to be there on time.

AMA membership and the annual waiver must be completed before arriving at sign-up — they are mandatory and must be presented at check-in.

Spark arrestor / OHV Registration is not required at this venue.

Need special accommodations for a disability? Contact casey@corcs.net ahead of the event.

For general questions: info@corcs.net  ·  corcs.net