9/9/2003: Ultrarunners of the month for August 2003, brought to you by Ultrafit Sports, The Endurance Performance Leader   Uli Steidl, 30 of Seattle, WA won the White River 50 Mile Trail National Championship in 6:37:02, bettering the old course record by 13 minutes.   The German citizen who resides in Seattle crushed a deep and talented American field by displaying remakable speed on this very demanding course.  With two major climbs of approximately 3500 feet, the White River course offers spectacular views of the surrounding Mt. Ranier National Park.      Nikki Kimball,32 of Elizabethtown, NY is firmly establising herself as one of the top female ultrarunners in the country.  The multi-talented distance runner, who also excels at snowshoe, mountain and road running, broke Ann Trason's two year old mark on the White River course to win the Women's 50 Mile Trail Championship.  Her time of 7:46:33 was 11 minutes faster then Trason's previous record set in 1991.   Kimball now has her sights on preparing for the World Cup 100K in Taiwan, which will be contested on November 16th. Congratulations to these two outstanding performers!   Ultrafit is a leading supplier of ultrarunning related products.  For more information, go to www.ultrafit-endurance.com