Saturday dawned bright and refreshing, after overnight showers washed a bit of the pollen away, for athletes of all stripes competing in the inaugural Rock On Rockdale 5K and 1-Mile Fun Run. Inspirational stories of participants were at every turn. After reading about Dick Hoyt, the 72-year-old Massachusetts father who has pushed his son Rick, 50,with cerebral palsy, in multiple marathons and triathlons; Eric Krug was motivated to begin training with his brother-in-law, Chris Sandy,despite being a busy father of three.