mtb
✓ Verified Active Listing
Sunrise-to-Sunset 12 Hour Mountain Bike Race
🧬 Course DNA & Technical Intel
🛞 Recommended Tire
2.2" – 2.4" XC Tubeless
🚴 Discipline
mtb
🏁 Course Distance Options
Solo Male
Solo Women
Solo Single Speed Men
Solo Single Speed Women
Solo Geezer Female
Solo Geezer Male
Duo Coed
Duo Men
Duo Women
Duo Adult/Junior
Trio Coed
Trio Men
Trio Women
Trio Junior Coed
Trio Junior Men
Trio Junior Women
Quartet Coed
Quartet Men
Quartet Women
Quartet Junior Coed
Quartet Junior Men
Quartet Junior Women
Quartet Adult & Junior
Quartet Geezer Coed
Quartet Geezer Men
Quartet Geezer Women
Quintet Coed
Quintet Men
Quintet Women
Quintet Junior Coed
Quintet Junior Men
Quintet Junior Women
Quintet Geezer Coed
Quintet Geezer Men
Quintet Geezer Women
Quintet Adult & Junior
3 & Under
5 & Under
6 & Under
9 & Under
11 & Under
About Sunrise-to-Sunset 12 Hour Mountain Bike Race
Official registered mtb event in Castle Rock, CO. Direct registration on BikeReg.
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⚙️ Recommended Pro Hardware for Sunrise-to-Sunset 12 Hour Mountain Bike Race
Top-rated power meters, radar, and GPS computers curated by Threshold Cycling.
Dual-Sided SPD Accuracy
View Product Specs ↗
Favero Assioma Pro MX-2 Power Meter Pedals
$759.00
±1% real-world power accuracy, seamless Bluetooth/ANT+ connectivity, and full rock strike durability designed specifically for gravel epics.
Backcountry Safety
View Product Specs ↗
Garmin Varia RTL515 Radar Tail Light
$199.99
Detects approaching vehicles up to 153 yards away with visual and audible cockpit alerts on your GPS computer. Vital for remote rural gravel roads.
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