Graham Taylor, Lincoln-Sudbury High School’s 91-year-old co-ski coach, has seen quite a bit on the slopes. He’s been around the sport since the late 1930s and has coached at Lincoln-Sudbury for the last 35 years. He’s helped lead teams to state championships and has coached some of the best high school skiers in the state.

But watching 15-year-old Nordic skier Laura Appleby still blows him away.

Appleby, a Lincoln resident, has been skiing since she was in the fourth grade. Now a freshman at the school, she was the team’s only all-star in Nordic and claimed the Mass Bay West League MVP while not losing a single race all season. And with both the state and junior national meet on tap, she’s showing no signs of stopping.

“She is the best, or one of the best, at her age in the country,’’ said Taylor. “She’s a delight. She’s dedicated, her attitude is great, there’s no conceitedness or any of that stuff. She’s grounded and has her values right.’’

Listening to Appleby’s day-to-day routine can make even some of the busiest of adults feel overwhelmed. She skis in one form or another six days a week, and she often uses her one “off day,’’ Friday, to head up to the site of her next club meet that weekend. Some days she practices for both Lincoln-Sudbury and her club, Cambridge Sports Union.

The thought of overdoing it crosses her mind, but not for long.

“Sometimes it feels like I could get burnt out,’’ said Appleby. “Starting in fourth grade sounds strange, but it’s actually relatively late compared to a lot of others. . . . It’s just a lot of fun skiing with all my friends at both teams. It’s just great; there are different speeds and different styles.

“It’s made to be fun, and I have a ton of fun doing it.’’

Matt Wentworth, who shares ski team coaching duties with Taylor, also coaches girls JV soccer and varsity baseball and works with many talented young athletes. But Appleby’s fusion of athleticism and passion blows him away too.

“You see athletes all the time that have really incredible ability,’’ he said. “You don’t always have people that have both the passion and the drive. She just loves skiing. A lot of our great skiers are very social; they love getting out there with and hanging out with their friends. But the biggest thing is they don’t always line up and say ‘I’m looking forward to racing today,’ but she does.

“To have someone who loves the sport that much and has that much passion and the athleticism to go along with it is a special combination.’’

The school has a strong history with skiing, both on the Nordic and Alpine side. Some might find joining such a successful program anxiety-producing, but Appleby’s transition has been smooth.

For her, having skied with kids from all over the state and region, staying close to home and skiing with classmates is a welcome change.

“L-S is a really, really fun high school team,’’ she said. “The captains are really great, and it’s just really nice to ski with L-S, but also with my [club] friends.’’

Rob Bradley, Cambridge Sports Union’s head coach, knows Appleby the skier better than anyone else, and it’s her love of the sport that most impresses him.

“The thing for her is that she just really has this deep enthusiasm’’ for skiing, he said. “She just really likes to race; she just really likes to ski. And she has so much fun doing it.

“There’s that [adage], ‘do you race to win or do you race to not lose?’ She’s somebody who races to win.’’

A key to her success is her training regimen, which borders on year-round. The only month she takes off is April, immediately following ski season. Otherwise, she can be found roller skiing during the summer or honing her skills from the moment the snow is made at the Leo J. Martin Ski Track in Weston.

While her coaches feel she really has no ceiling and her skills will take her far, she is not about to start looking too far into the future.

“Of course, every kid’s dream is to go to the World Cup or go to the Olympics,’’ she said, “but I try not to focus on that because it’s a lot of pressure. Skiing is really just for fun, not competition.’’

When she’s not clipped into her skis, the sport is never far from her thoughts. She created her own skiing blog and has turned to a new activity now that she’s in high school: encouraging others to get in on the fun.

“I’m trying to get people to join [at] L-S,’’ she said, “because it’s just great to see the enthusiasm [in others] that I had when I learned to ski. Skiing is often overlooked, but when people join they all have so much fun.’’

Logan Mullen can be reached at logan.mullen@globe.com.