Race Details:

Presented By: SENTIR Racing Team


SENTIR Racing Team presents the 2023 Keystone Classic.  A proud participant event in the 2023 Tour De Dirt, the official USA Cycling State Mountain Bike Championship Series for Oklahoma.



Lake Keystone State Mountain Bike Trails

1900 OK-151   

Sand Springs, OK  74063

36.14001681058981, -96.25988700352579



See map below.  Parking is available on the east shoulder of HWY-151 and in the State Park on the west side.

Parking at the trailhead is limited and only allowed for tent/equipment dropoff and will close at 8:30am

Please follow direction of the parking volunteers, do not stop on or block the highway at any time



The race course is the traditional 5 mile loop raced in the the clockwise direction.  The first 2 miles are rocky with several difficult technical sections and gradually becomes moderate terrain for the remainder of the loop.

Trail Forks Map

Strava Segment



This race is permitted by USA Cycling, all USAC rules apply per the latest USAC Rulebook version. 
A valid 2023 license is required to race. 
An annual license is preferred and required for Cat1/2 series eligibility.
One Day licenses may be purchased on BikeReg or onsite for $15.


Tour De Dirt:

2023 TdD plate is required to race.  (Not required for Kids Kup ages 4-5)
USAC Annual license is required for Cat 1 & 2 racers to be eligible for the TdD series
A helmet is required at ALL times while riding a bike
Riders may NOT be on any portion of the race course except while racing.  No pre-riding during live racing
Pro/Cat1 payouts according to schedule, Cat2/3 top 3 receive awards and Kids Kup receive medals
Check oktdd.org for all rules, events and standings 
Check the Tour De Dirt Facebook group and the Facebook Event for event updates


Kids Kup:

Ages 4-5, USAC license and TdD plate NOT required 
Ages 6-12, USAC license and TdD plate required
Ages 6-18, Junior USAC licenses are now $40 for 2023
Age group list and series standings can be found here


SENTIR Racing Team or Spirit of Youth is a 501(c)(3) non-profit organization dedicated to cycling, community and charity.  This race is a fundraiser for Special Olympics of Oklahoma. All proceeds directly benefit Special Olympians in Oklahoma.   






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