Seven Hells Bike Tour

"Hey masochists, get those granny gears oiled up -- Seven Hells is back
with seven (and then some) of the City's most devilish climbs. Be
prepared for some very strenuous climbs and long flat rides: Twin
Peaks, Mt. Davidson, Ocean Beach to Legion of Honor, Seacliff and GG
Bridge, Divisadero, Nob Hill, 21st St. in the Mission and Clipper.
We'll be going around 45 miles (route as PDF).
With breaks and a moderate pace, this ride should take around 4-1/2
hours. Strong riders only please. We will make every reasonable effort
to stay together as a group. Rest stops announced on day of the ride."