Krissy Jost and Jamie Davies had opposite workout schedules for the summer, but they continue to achieve the same result -- victory. That was the case yesterday, as each scored a convincing triumph in the annual Harford County Invitational cross country meet at Harford Community College. Each also had been a winner in the Spiked Shoe meet two weeks ago. Jost, 15, a Perry Hall junior, pulled away from rival and good friend Kristen Nicolini of Annapolis in the last mile, opening an 80-yard margin at the finish. The winner was timed in 18 minutes, 17 seconds, and the runner-up, 18:40. Although the 5K (3.1 miles) course was a bit different than last year because of campus construction, times counted in the Top 10 list, and the two became the second and third fastest, exceeded only by former Dulaney star Amanda White two years ago (17.34.1). Davies, a Catonsville senior, moved out about halfway through his race, building a 70-yard lead at the end. He finished in 16:15. Runner-up Doug Ling of Cumberland Valley came in at 16:29. In the team competition, North Penn won the girls title with 76 points, followed by Gwynedd Mercy Academy (85) and C. Milton Wright (135). For the boys, North Penn was first (51), trailed by C. Milton Wright (96) and Chambersburg (98). "I took off during the summer, except for some time when I was invited to the Olympic Development Center in Colorado Springs," said Jost, whose 5-foot-3 1/2 , 100-pound frame belies her strength and determination. "I think the rest helped, because I came into the season relaxed, and now I'm really excited about the workouts and the competition." To which Perry Hall coach Jerry Martin added: "Her approach is something the Perry Hall community has needed. She has a seriousness of purpose without being over-intense about it." The race marked the first time this year Jost had runners in front of her at the first half-mile. "It was a pack of five, but then Kristen and I broke away and the lead went back and forth," Jost said. "In the past, we'd beaten each other, and we seem to feed off each other's race. We're real good friends and she's the one I want to run against." Davies explained he had done a lot of cross-training during the summer, biking and gym workouts -- lifting weights and working the rowing machine. As is often the case with outside competition -- the meet attracted 72 schools from four states for the daylong 10-race program -- the rumor was out ahead of time there was a 14:11 runner in the race. "I didn't think I'd ever win," said Davies, 6-1 and 148 pounds. "I went out too fast at the beginning, and stuck with two guys in front of me. They slowed and I went by. I had the lead for the last half of the race, but I was feeling bad for the last mile. I thought somebody was close, but they must have fallen off. "At the same time, I was waiting for that 14:11 to blow by me. That psyched me out and made it a tough race mentally." For C. Milton Wright's girls team, Jen Englehart, who charged home fifth in 19:49, and Amy Altman, 17th in 20.47, were the top two finishers. For the boys, Brian Harris, tagged with a rare defeat, was sixth in 16:46, and Steve Donahue 12th in 16:51.