200 KM DOUBLE METRIC
THIS COURSE INCLUDES STEEP CLIMBS AND TECHNICAL DESCENTS.
The Marin Double Metric Century route joins the Marin Century route for the first 50 miles. It begins on flat-to-rolling terrain before a 1.5 mile, 430-foot climb to the Big Rock summit of Lucas Valley and a thrilling descent through the redwoods into the ranches and grasslands of West Marin. The route then winds north through relatively flat terrain past the small town of Nicasio--site of the first rest stop--and alongside Nicasio Reservoir.
A 1.4-mile, 380-foot climb up the Pt. Reyes-Petaluma Road and a gentle descent leads riders past the famous Cheese Factory Cheese Factory to a left turn on Hicks Valley Rd. Fuel up at the Lincoln School Rest Stop before heading north to Marshal Petaluma Rd/Wilson Hill junction. A left turn here takes you through bucolic farm lands to Highway 1 where you head North to Tomales. A left turn onto Dillon Beach Road leads to a moderate climb along Whitaker Bluff and remote Franklin School-Valley Ford Road, up and over one last ridge north, past the halfway point to the third rest stop at Valley Ford .
The Valley Ford Rest Stop is well stocked to sate your hunger and quench your thirst.
ALL DOUBLE METRIC RIDERS NEED TO SIGN IN AT THE BAY HILL COLEMAN LOOP CHECKPOINT AFTER LEAVING THE VALLEY FORD REST STOP. HARD CUTOFF TIME IS 12:00 for DM riders . While the century riders are starting to head back south, you are about to taste some of the best hill climbs anywhere. The climb up Bay Hill Rd. is beautiful with grand vistas of the Pacific once you have earned the crest. It is a quick descent (rough road) to Hwy 1 for some very scenic miles of coastline before turning onto Coleman Valley Rd. Coleman Valley Rd. is the big climb of the 220Km course. With 60 miles on your legs, the climb is long and steep with false summits and huge views. Be sure to look south from the top. At the edge of the horizon you will see Mt Tam! This is one for the books. Remember to smile! This will forever be one of your favorites!
At the top of the Coleman Valley Loop, you will find a “Mini Rest Stop” stocked with water, Gatorade and energy supplements (gels, bars, etc). This stop will not have the usual array of fruit and other foods you may be used to but you will find those down the road a few more miles at Valley Ford.
The top of the Coleman Valley Loop undulates with a 400 ft descent in the middle before climbing right back up (gotta love that!). The final descent on remote Joy Rd is very big and long, and the two lane road narrows in places, so watch for the occasional oncoming vehicle as you negotiate some fast curves. Wide shouldered roads take you back to your 4th Rest Stop in Valley Ford (Déjà vu) at mile 86.8.
The ride continues over scenic and sparsely traveled roads to the short but steep Middle Road climb with another thrilling descent to the S curve at Whittaker Bluff. It then crosses over Highway 1 to become Fallon Two Rock Rd. which we follow to a right turn at Alexander Rd. and then a left back onto Tomales Petaluma Rd for the trip back down Chileno Valley Rd. A rest stop awaits at the historic Laguna School before you climb back over the Wilson Hill to Hicks Valley Rd. USE EXTREME CAUTION DESCENDING. THERE IS A SHARP LEFT TURN AT THE BOTTOM OF THE HILL.
The route continues along the rolling hills of Hicks Valley Road before turning west on Pt. Reyes-Petaluma Road, taking riders past the Cheese Factory to a slight climb and a very fast descent to Nicasio Reservoir and Nicasio Valley Road. A relatively flat stretch lead to the fifth and final rest stop at the Nicasio Schoolhouse. A few miles later, riders begin the climb back up Lucas Valley Road to Big Rock. Riders should exercise caution on the DEMANDING DESCENT FROM BIG ROCK AT LUCAS VALLEY ROAD. This descent has several sharp left-hand turns with a decreasing radius. The remainder of the route is almost all downhill to the finish.