Jumped on the bike during lunch hour for a break from a busy day at work (major dmg incident-hail). Right where I want to be this early in my road cycling season; avg spd at 10-mile marker just turned to 15 mph for a split second on the Edge 305 screen as the corner was turned up onto Lyford St around the corner from Howe Park. Still taking it a little easy breaking in the new chain and drivetrain service (feels so much tighter w/ crisper shifting), but can't use the headwinds as an excuse today as there weren't any! ( Avg spd 14.4 mph last run on 4/30, H/R ? bpm - still need chest sensor battery replace ). Avg speed build-up as ride progressed: Knox Trail Jr High entrance road (1/4 mile into the route) 19.0 mph (19.0 mph last time) ; top of first big Ash St hill (at 2 wx vanes) 7.2 mph (last time it was 6.8 mph); at end of Ash St 11.2 mph (last time 10.2 mph); corner of E Charlton & Bacon Hill Rd 11.7 mph (last time 10.5 mph); E Charlton & Old Spencer Rd (town line) 13.5 mph (last time 11.8 mph); end of Old Spencer Rd (at Rt 31) 13.7 (last time 12.5 mph); bottom of downhill trough on N Sturbridge Rd (just before Osgood Rd) 14.2 mph (last time 13.5 mph); corner of Briarcliff Ln & Bacon Hill Rd near railroad underpass 14.3 mph (last time 13.8 mph); end of Cranberry Meadow Rd at railroad overpass 14.7 mph (last time 14.1 mph); Howe Park, at turn onto Lyford Rd uphill just before railroad overpass- 15.0 mph (last time 14.4 mph). Wx conditions: Some sun w/ E and NE winds at 5 mph, air temp 64 F , dew pt 53 F Clothing: two layers lower, 3 layers upper.