A hot one, but air much cleaner than yesterday (had been a particle air quality alert (yellow) for 5/23/10). Forgot to charge Garmin Edge after yesterday's ride, so lost battery power at mile 45. Will complete trip by hand-drawing it (about another 35 miles and 1900 ft of elevation gain, so total for this ride is 80 miles, 5100 ft elev gain over ~11 and a half hrs ( 7 hrs moving time) ). Grove St closed due to water main project, so detoured onto Rt 31 North at start. Lunch stop at Princeton Ctr coffee/bake shop (bowl of mushroom and cream soup, slice of strawberry bread). Then aft'n coffee break w/ brownie at Meadowbrook Orchards out on the deck overlooking the orchards and distant hills to NE, under an umbrella for protection from the sun, and replaced rear tire tube as noticed tire went flat during the break (slow leak right at valve/tube joint). Powered down the Edge at coffee break stop; doing so put a data glitch in stream of about 3 miles--have noticed in the past when accidently hit reset button this also happens! Just after the battery died, raced w/ another cyclist along Bailey and Reservoir roads (we passed and repassed each other several times), passed a recumbent cyclist at full throttle by Worcester water treatment plant, he rejoined me while I coasted to the Mower St stop and Tatnuck Sq. red light... said his bike weighed about 32 lbs... has great momentum down the hills!! Stopped at Barney''s for Mon night ride (22 participants this eve); our group did 14 miles at avg speed of 16.5 mph; finally, rode home by Worcester airport runway and Ransom Rd in Leicester. Sunny w/ some aft'n Cu cloud streeting (clouds hardly moved at all), air temp at start and finish: 60s F, maxed out in low 80s F mid aft'n, dew pts in mid to upper 50s F, winds SW 5-10 mph.