Rosemont junior Nia Dorner ran a season-best 54.94 seconds in setting a new girls 400 meter meet record on Friday at the Sac-Joaquin Section Division II-III finals at Bella Vista High School.
Dorner's time bettered Vallejo's Derrhea McLiechey's 55.44 in 2007 and it ranks as the second best in the state behind Serra of Gardena's Renetia James, who ran 54.77 on Saturday at the CIF-Southern Sectional divisional finals.
Dorner's time is No. 28 in the United States this season.
In other highlights from the section championships on Thursday and Friday:
Del Oro won the girls and boys D-II team titles behind hurdler double winners Brie Simmons (a meet record 14.27 girls 100 and 43.64 300) and Casey Wheeler (14.38 110 boys highs; 38.45 intermediate). Wheeler's 20 points helped Del Oro edge Oakmont by one point for the team title.
Led by sprinters Austin Mitsch of Jesuit and Esther Higgwe of Monterey Trail, those two schools were respective boys and girls D-I section team winners at Elk Grove High School. Mitsch won the 100 (10.80) and 200 races (21.87) and anchored the winning boys 4x100 relay (42.35). Higgwe also won the 100 (12.18) and 200 (25.09) and anchored the winning 4x100 relay (47.19).
Thanks to record wins in the 4x100 (49.16) relay and 4x400 relay (4:05.44), the Cosumnes Oaks girls won the Division IV team title while first place finishes from Joe Soik in the 3200 (9:48.30) and Matt Johnson in the pole vault (14-0) helped El Dorado capture the boys title at Modesto Junior College.