Events/Rock Cobbler

Rock Cobbler

Gravel
Date
Sat, 13 Feb 2027
Venue
Bakersfield, California, USA
Countdown
February
Distance
161km
Total climb
1,524m

A gravel day that insists it is not a race. Roughly 160km through the ranch country around Bakersfield, California, stitched from dirt roads, singletrack, creek crossings and deliberately silly hike-a-bike obstacles.

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The course

The route

The Full Cobble runs about 160km (100mi) with roughly 1,500m of climbing across gravel, dirt ranch roads, singletrack, creek crossings and hike-a-bike obstacles, with a shorter Half Cobble option. It's a cult, community-scale field of around 561 riders, most taking 8 to 10 hours or more.

Weather

Mid-February, Bakersfield

17°CTypical high
4°CTypical low
-3°CColdest in 20 years
21%Days with rain

Highs around 17°C and lows around 4°C, but it has dropped to -3°C. Rain on 21% of days. Pack for the cold end, not the average.

NASA POWER data, 2006-2025, the week either side of race day
2025 results

Who finishes, and how

#RiderTimeAvg speed
01ruth HOLCOMB05:29:29.79329.3 km/h
02siena HERMON05:53:07.71727.4 km/h
03charity CHIA06:00:00.01326.8 km/h
41
Women finishers
7:19:48
Median time
22.0 km/h
Median speed
Women · 2025 results, as published by the organiser.
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Training

Training for the Rock Cobbler

We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.

Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.

GarminWahooPolarHammerheadIntervals.icu
Terrain, not vertical
Typical sessions
Constant surface changes: gravel, singletrack, ranch dirt and loose steep pitches with no rhythm to settle into.
Hike-a-bike and ranch obstacle sections that put you off the bike, carrying and scrambling.
Creek crossings that leave you with wet, cold feet and slick remounts.
Eight to ten hours or more of never-settling terrain, where mental grit matters as much as fitness.
What your weeks look like
Typical sessions
A progressive long ride building from 3hr up to a 6-8hr mixed-terrain day, the core adaptation.
Chaos simulation rides on the roughest terrain you can find, including deliberate off-bike sections.
Steep-pitch strength: low-cadence seated efforts on loose climbs, plus hike-a-bike drills.
Mixed-terrain handling and creek-crossing remount practice, with fuelling rehearsed at 60-90g carbs an hour.
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
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