Bobby McMullen pedaled his road bike over a wooden bridge, swooped along a curving trail next to Richardson Bay, and then, as he approached a gate, readied himself for what, under the circumstances, was a risky maneuver.
Risky because the 50-year-old Mill Valley bike racer is blind. McMullen, who can see some shapes and bright colors, competes in downhill and cross-country mountain bike races by following a guide who calls out turns and obstacles.
“Stay on me, Bobby,” instructed McMullen’s friend, Brad Waldron, who served as his guide during a recent 20-mile training ride through Mill Valley and Tiburon  … Pictures and more