reminder: birthday bikeride

Please join me at my house this Saturday at 10am for a 42-mile bike ride to Concord and Carlisle to celebrate my birthday. We'll be taking it easy and expect to be back between 3 and 4 in the afternoon. I hope we'll get at least one person who hasn't ridden that far before, so if that's you, here's your chance to do something new!

(gmap-pedometer thinks it is 43.01 miles -- that's either one to grow on, or insurance in case your bike computer's calibration is off.)