gravel
✓ Verified Active Listing
R3-California Dirt MTB Series, Scott's Flat Lake MTB ST/XC
🧬 Course DNA & Technical Intel
🛞 Recommended Tire
38mm – 42mm Tubeless
🚴 Discipline
gravel
🏁 Course Distance Options
Open Pro/Cat 1 M
CAT 1 M 60+
CAT 1 M 50-59
CAT 1 M 40-49
CAT 1 M 30-39
CAT 1 M 19-29
CAT 1 M Jr 17-18
CAT 1 M Jr 15-16
CAT 1 M Jr 13-14
CAT 2 M 60+
CAT 2 M 50-59
CAT 2 M 40-49
CAT 2 M 30-39
CAT 2 M 19-29
CAT 2 M Jr 17-18
CAT 2 M Jr 15-16
CAT 2 M Jr 13-14
CAT 2 M Jr 11-12
CAT 3 M 60+
CAT 3 M 50-59
CAT 3 M 40-49
CAT 3 M 30-39
CAT 3 M 19-29
Cat 3 M Jr 17-18
CAT 3 M Jr 15-16
CAT 3 M Jr 13-14
CAT 3 M Jr 11-12
CAT 3 M Jr 9-10
CAT 3 M Jr 6-8
Open Single Speed
Open Pro/Cat 1, F
CAT 1 F 40+
CAT 1 F 30-39
CAT 1 F 19-29
CAT 1 F Jr 17-18
CAT 1 F Jr 15-16
CAT 1 F Jr 13-14
CAT 2 F 40+
CAT 2 F 30-39
CAT 2 F 19-29
CAT 2 F Jr 17-18
CAT 2 F Jr 15-16
CAT 2 F Jr 13-14
CAT 2 F Jr 11-12
CAT 3 F 40+
CAT 3 F 30-39
CAT 3 F 19-29
CAT 3 F Jr 17-18
CAT 3 F Jr 15-16
CAT 3 F Jr 13-14
CAT 3 F Jr 11-12
CAT 3 F Jr 9-10
CAT 3 F Jr 6-8
E-Bike W Open
Pro/Cat 1 M Open
CAT 1 M 60+
CAT 1 M 50-59
CAT 1 M 40-49
CAT 1 M 30-39
CAT 1 M 19-29
CAT 1 M Jr 17-18
CAT 1 M Jr 15-16
CAT 1 M Jr 13-14
Open Single Speed
E-Bike M Open
CAT 2 M 60+
CAT 2 M 50-59
CAT 2 M 40-49
CAT 2 M 30-39
CAT 2 M 19-29
CAT 2 M Jr 17-18
CAT 2 M Jr 15-16
CAT 2 M Jr 13-14
CAT 2 M Jr 11-12
Open Clydesdale, 200+ lbs.
CAT 3 M 60+
CAT 3 M 50-59
CAT 3 M 40-49
CAT 3 M 30-39
CAT 3 M 19-29
Cat 3 M Jr 17-18
CAT 3 M Jr 15-16
CAT 3 M Jr 13-14
CAT 3 M Jr 11-12
CAT 3 M Jr 9-10
Pro/Cat 1 F Open
CAT 1 F 40+
CAT 1 F 30-39
CAT 1 F 19-29
CAT 1 F Jr 17-18
CAT 1 F Jr 15-16
CAT 1 F Jr 13-14
CAT 2 F 40+
CAT 2 F 30-39
CAT 2 F 19-29
CAT 2 F Jr 17-18
CAT 2 F Jr 15-16
CAT 2 F Jr 13-14
CAT 2 F Jr 11-12
CAT 3 F 40+
CAT 3 F 30-39
CAT 3 F 19-29
CAT 3 F Jr 17-18
CAT 3 F Jr 15-16
CAT 3 F Jr 13-14
CAT 3 F Jr 11-12
CAT 3 Jr 9-10
12Noon Friday Marina Venue Setup at Scotts Flat Lake Marina Parking Area (Need 6+)
3pm-5pm Fri. - Check-In Booth (Need 2)
2pm Sun. Check-In Table (Need 2)
7:15am Sat. Lead Communication/1st Aid Wilderness Cert. (Need 1)
3:30pm Sat. Course Marshal Short Track Race (Need 3)
6pm Sat. Teardown ST (Need 1)
7am-1pm Sun. 10/12/25 Check-in Racers (Need 2)
7:15am Sun. Lead Communication (Need 1)
7:30am-12Noon, Sun. - Shift 1 - Course Marshals (Need 9)
11:15am-3:30pm Sun. - Shift 2-Course Marshals (Need 9)
8:00AM-11:30AM Sun. Shift 1-Rover (Need 1)
11:30AM-2:30PM Sun. - Shift 2-Rover (Need 1)
10:30am-2:30pm Sun. - Sweep Cat 2/3 (Need 1)
9:30am Sun. Wave 1 Results Board/Points/Podium Helpers (Need 2)
11am Sun. - Wave 2 Results Board/Points/Podium Helpers (Need 2)
1pm Sun. - Wave 3 Results Board/Points/Podium Helpers (Need 2)
~2pm Teardown Team All Hands on Deck (Teardown and Pack Trailer)
~2pm Clear Course - Area 1 Upper Westside of Venue (Need 1)
~2pm Clear Course - Area 2 Lower Westside of Venue (Need 1)
~2pm Clear Course - Area 3 Upper Westside of Venue (Need 1)
~2pm Clear Course - Area 4 Upper Eastside of Venue (Need 1)
~2pm Clear Course - Area 5 Lower Eastside of Venue (Need 1)
About R3-California Dirt MTB Series, Scott's Flat Lake MTB ST/XC
Official registered gravel event in Nevada City, CA. Direct registration on BikeReg.
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⚙️ Recommended Pro Hardware for R3-California Dirt MTB Series, Scott's Flat Lake MTB ST/XC
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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