Logan Smith wasn’t sure if he had won a race in his high school career — at any level.

“I think I won once in track,” said the humble Saugus senior.

Chalk one up for cross country.

Chalk up five in a row for his team.

Behind Smith’s first-place finish, the Saugus boys won their fifth straight league championship at Thursday’s Foothill League cross country finals at Central Park, while the girls duplicated the feat thanks in part to Stephanie Bulder’s individual championship.

Both Centurion teams, which are ranked No. 1 in Division II in the latest state polls, finished the league season undefeated under the dual-meet scoring system. Golden Valley was second in both boys and girls, while Canyon’s boys edged Hart for third place and Valencia wound up third on the girls side.

Hart’s boys will still qualify for an at-large postseason berth, because the Indians were ranked in the top 13 in the CIF-Southern Section rankings the final two weeks of the season.

Valencia’s Falco Di Giallonardo and West Ranch’s Jennifer Owen both finished in the top six on Thursday, so they will advance to the postseason as individuals.

So there will be no shortage of Foothill League representatives at Mt. San Antonio College next weekend.

And once again, Saugus headlines the group.

Smith negotiated the redesigned course at Central Park in 15 minutes, 42.84 seconds, less than a second ahead of teammate Robert Pion.

“Everything else from here on out is team and nothing else,” Smith said. “This is at best an ego-booster. It was definitely a difficult, fun race.”

All five scoring Centurions finished in the top 13, the type of balance that head coach Rene Paragas said makes them so good.

“That’s the strength of our team,” he said. “We really have five or six guys who could have big races. Anyone of them could be a league champion.”

Bulder had won two varsity league races individually in her career, but her third victory was never really in doubt. The senior separated from the rest of the runners early and turned in an overpowering performance to finish in 18:17.62, 12 seconds head of teammate Danielle Hernando.

“It’s my first league title,” she said. “It’s exciting to know I’m ending my senior season with a bang.”

Thursday’s finals also marked the first time this season that Saugus’ senior-laden girls lineup ran together. Defending league champion Kaylin Mahoney finished third at 18:31.75, and all seven runners finished in the top 10.

Golden Valley’s girls were led by sophomore Chelsey Totten, who was fifth at 18:34.34. The second-place finish is the highest league finish for a varsity girls team in school history.

“We talked about it all summer,” said co-head coach Rob Evans. “This season, they began to believe it.”

For West Ranch, Owen finished fourth at 18:32.15 and her team finished in third place on Thursday. But because the Wildcats struggled at the first two league meets, they didn’t overtake Valencia’s girls for the final postseason spot.

“It’s a huge relief,” said Vikings head coach Jeff Gilkey. “We knew it’d be tough. We knew it’d be close. Our girls ran well, but everybody did.”

West Ranch head coach Rick Larimore, meanwhile, knew his runners dug a hole for themselves early on with illness and injuries.

“I’m disappointed with the results, but not with them,” he said.

On the boys’ side, Canyon catapulted itself into the postseason with top-five finishes from seniors Sam Willis (fourth, 15:49.00) and Timmy Gonzales (fifth, 15:56.59).

Like Hart, the Cowboys were headed to the postseason regardless because they have been ranked in the Southern Section Division II top 13 the last two weeks.

But on Wednesday, the coaches spoke to their runners about self-control, one of John Wooden’s lessons from his “Pyramid of Success.”

“Part of self-control is self, selfishness,” said Canyon head coach Paul Broneer. “If you want to be good, this has to be a priority. At that point, I interjected, ‘Well, they only give seven medals.’”

Willis and Gonzales got two of those all-league medals, along with Smith, Pion and Di Giallonardo, who was third at 15:48.69.

Golden Valley’s Juan David Garcia and Nolan Del Valle finished sixth (16:00.91) and seventh (16:08.38) to lead the Grizzlies.

Hart’s top finisher was senior Sam Goldman, who was ninth at 16:13.75. The Indians ran a brave race, considering they were without No. 1 runner Sam Peckham, who has a stress fracture in his foot and is out the rest of the season.

“They knew what they needed to do,” said Hart head coach Larry David. “A couple of kids ran super today.”

For the girls, Saugus’ Karis Frankian and Alex Hampton also earned all-league medals for sixth- and seventh-place finishes, respectively.