Does anyone know anything about the Cavalry "Spur Ride"?

Spur rides can take many forms. Usually, they involve multiple days performing various tasks in the field, each task a demonstration of one's proficiency in different areas of soldiering, particularly those having to do with the cavalry (19 series). This image looks like this unit may have had a board-like component, if this was actually a spur ride event. Each unit will conduct their rides differently.

At the end of the ride, soldiers are awarded their silver spurs.
Silver spurs denote the successful completion of a spur ride.
Gold spurs denote the completion of a combat deployment with the cavalry.

Spurs are worn on several occasions, on combat uniforms or dress uniforms.

The Order of the Spur is a Cavalry tradition within the United States Army.
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The Spur Hierarchy in order of precedence determined by various Cavalry CSMs around 1990 was as follows
1. Combat Spurs - Gold (actually brass for enlisted Dragoon/Cavalry Revolutionary War) Officers and enlisted must have served assigned or attached in combat with Cavalry units, an Infantry or an Armor Scout/Recon element.
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2. Cold War Spurs - Bronze (some units Silver) (since 1945 - 1990 but not by all units). The earlier era ‘Spur Ride’ utilized the concept of Cavalry units, Scout Platoons (like with Infantry BNs) deployed on the East-West German Border, the Korean DMZ or the Panama Canal Zone. The Stateside Cavalry units and Scout/Recon elements that deployed overseas to Europe, Japan/Korea or Panama large scale exercises in support of the Army mission were included. Soldiers had to receive MOS performance pay (prior to 1970s) or pass 80%+ (late 1970s) on their SQT/Common Core Tests, + receive a distinguished with their Scout team/squad/section's Scout Proficiency Course (SSPC) or their crew's, scout vehicle, tank, Sheridan, artillery piece/mortar, antitank, ADA etc gunnery. Though called Spur Rides their criteria and implementation of the practice was based on an extended, longer-term Qualification Ethos.
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3. Rider Spurs - Silver (started up in some stateside units about 1980). The later era or Post-Cold War Spur Ride was developed to carry on the Order of the Spur tradition. The modern ‘Spur Ride’ varies from unit to unit, but it is generally an event held over multiple days during which a Trooper must pass a series of physical and mental tests relevant to the Cavalry, detached/attached (such as with an Infantry HQs) Scout/Recon platoon . Some of the tests evaluate leadership, technical and tactical proficiency, physical fitness, the ability to operate as part of a team under high levels of stress and fatigue under both day and night conditions, though the specific tests vary by unit. A written test is often also administered, with questions that cover United States Cavalry and unit history.
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That's pretty much 'The Hierarchy' and it's based on some pretty practical precepts - Combat thumps all, Risk to Life is second (the West German Border and Korean DMZ had many skirmishes) and a demonstration (though grueling - not life threatening) of the Trooper's performance is lowest.
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I hope this helps.

Fun times - push a Humvee a klick through mud - detail it - then push it back where you found it.