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Devil Mountain Double Century

Last updated April 29, 2012 - Send Feedback

See the official Devil Mountain Double Century details.

I rode the Devil Mountain Double Century on my Moots Vamoots RSL with the Lightweight Obermayer wheelset with Veloflex Record (front) and Sprinter (rear tires. My Vamoots RSL uses SRM Cannondale Hollowgram SL power meter.The Moots Vamoots RSL ride quality and wheel ride quality were superlative in every respect.

The 2012 ride offered stunningly beautiful green hills, perfect weather, and ideal wind conditions. Hamilton Challenge riders were not so fortunate with the wind which was reportedly brutal on Mines Rd. as in 2011.

Temperatures were cold until 9am or so, and double layers and a wind vest still left me chilled after descending Mt. Diablo. The temperature warmed steadily after that, but remained quite cool through the shaded Morgan Territory section. I ditched the tights and 2nd layer at the Morgan Territory rest stop, forwarding them to the Pet the Dead Goat rest stop (seriously, the goat died! Can't make that stuff up!).

Of special note was the high-speed ascent of Altamont Pass (the wind farm area), where I spun out at around 40 mph going uphill in my 50 X 34 chainring with the wind at my back. Speed in that section was 30-40 mph and that was a hoot!

ThunderBay 4 - The Speed To Create. The Capacity To Dream.


Unlike the Solvang Spring Double which was dominated by 40-60 year old men, there was a greater mix of riders for DMD, including more women and more younger men.

I suppose I could have worked harder and got sub-14 (easily done just by cutting 14 minutes off the 45 minutes or so of rest stops, and avoiding wasting a few minutes at the end before time was taken), but sub-13 would be much harder. Still, I am quite happy with my results at #13.

Top 15 finishers in the Diablo Mountain Double Century, 2012
Top 15 finishers in the Diablo Mountain Double Century, 2012
142 riders completed the full course

Quality miles, nearly all of 'em

Nearly all the miles are quality ones— very enjoyable with exceptional scenery in spring green over 90% of the miles.

Exceptions include the Niles Canyon (nasty) and Crow Canyon (not quite as bad) mileage approaching the finish— being tired and dealing with the high-speed traffic is a bad combination, so stay alert.


I had trouble getting google maps to do the route in one piece. There might also be errors in these map.s

Google map: part 1 San Ramon to Altamont / Grant Line Rd

Google map: part 2 from Altamont / Grant Line Rd back to San Ramon

Devil Mountain Double Century (2012)
Devil Mountain Double Century (2012)

Ride Analysis with power and heart rate


Clock time: 14:13
Roll time:  13:29:54
Power (watts)*:  187.9
Heart rate**: 124.0
Ascent:  18,827'
Distance: 207.0 (nominal 206)
Kilojoules*: 9087 (8687 calories)
Speed**: 15.34 mph * Power and kilojoules computed while pedaling only ** Heart rate and speed averages while rolling (does not averate in rest stops)
Devil Mountain Double Century power
Devil Mountain Double Century power and heart rate with elevation profile



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