Loop down Mulholland Hwy and up Dry Canyon Cold Creek Rd. It got its name because reputedly the strong climbers can complete the Dry Canyon Cold Creek Rd ascent in 7 min. Challenge accepted?
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Download FulGaz now and ride Santa Monica Mtns - 7 Minute Hill/Mulholland Loop on your home trainer. You'll then feel every change in gradient and see every turn in up to 1080p video.