Westport's Marcus Russi finished 35th among 74 competitors in the Junior Elite Triathlon National Championships this month in San Diego.

The under 19 event included a 750-meter swim, 20-kilometer bicycle ride and a 5-kilometer run. Competing in his first junior elite nationals, Russi registered his best sprint triathlon time, 60 minutes 31 seconds, according to a news release.

Russi, 15, is entering his junior year at Staples High School, where he has competed as a varsity swimmer and a runner on the outdoor varsity track team.

In San Diego Aug. 5, his best leg was cycling, where he averaged 24.9 mph, the same pace as the race winner. In overall standings, he finished eighth among competitors age 16 or under.

More recently, Russi eighth across all age groups in the U.S. Sprint Triathlon National Championships in Burlington, Vt., last weekend. A field of 433 finished the event, according to a news release.

With a time of 1:10:26, he was sixth in the male Under 19 category and qualified to represent the U.S. in the ITU World Sprint Triathlon Championships in Auckland, New Zealand, in the fall of 2012.

Closer to home, Russi won the Under 19 Seaside Sprint Triathlon in June and the Fairfield Trifitness and Westport Kiwanis triathlons last September, according to the release.

He competes in triathlon as a member of Vortex Racing.