The journey of the yellow brick road is the final challenge — a 6.3-mile obstacle course and endurance run through the woods on the Quantico Marine Corps base, finished by ringing a giant bell.

Here's what we do know from various sources. The color pink, or terra cotta depending on your knowledge of colors, matched the pool deck or the driveway in front of the hotel; the sidewalk was 1 ...

The "yellow brick road" is a reference from the iconic 1939 Judy Garland film, "The Wizard of Oz," which was based on a 1900 children's novel of the same name.