Racing Underground Events
Racing Underground Timing
Racing Underground Timing
Experience the Racing Underground Difference
Racing Underground has been timing and managing endurance events in Colorado since 1995. We offer state of the art timing services for events of all sizes, with a finish arch, large-digit display clock, professional sound system, and backup timing all standard. For running races, we offer disposable bib-tags at no extra charge, and multisport events are timed using a re-useable ankle chip on a soft and comfortable neoprene strap.
Darrin and Jill Eisman, and their staff, have worked together on more than 2,000 successful races including running, cycling, snow sports and triathlons.
In addition to their own events, Racing Underground provides timing services for races of all sizes, from large National Championship competitions to school fundraisers and local 5k runs.
Please contact us to see if your date is available for timing by Racing Underground.
State of the Art Race Timing
Racing Underground provides state of the art chip timing for endurance events from 1 mile to 100 mile ultras. Let us show you how we can make your event a success!
Disposable Bib Chip Timing
Ankle Chips for Triathlons
Live Remote Start & Split Timing
Results Kiosks & Scrolling Results Displays
Live Online Results From Anywhere (Starlink)
Live Checkpoint Integration/Tracking For Trail Races
Equipment Rental
As race organizers ourselves, we have all of the equipment you will need to produce your event. Some items are included with event timing. Equipment rentals are only available to events being timed by Racing Underground.
Finish Arch (included)
Professional Sound System (included)
Barricade Fencing (500 feet available)
Traffic Control Items & Cones
Tents & Tables
30 Years Experience
Darrin & Jill Eisman have been producing and timing endurance events of all types in Colorado since 1995.
Road & Trail Races
Triathlon & Duathlon
Mountain & Gravel Bike
High School Cross Country
Winter Sports XC Skiing/Snowshoe
“Away from the smog in cities, our hearts are drawn west, where the only dust is earth, and the only barrier is the sky. Head west for the silence that roars from a wild heart.”
