TFRRS Performance Profile
Career Accolades
- Pac-12 Men's XC Freshman of the Year (2023)
- All-Pac-12 XC Second Team (2023)
- NCAA West Region XC team champions (2023)
- Pac-12 XC team champions (2023)
- National high school 5,000 record-holder
- USTFCCCA All-Academic (T&F 2024)
As a Freshman (2023-24)
Outdoors
- Advanced to the NCAA West Prelims in the 5,000 and 10,000
- Set personal best in the 10,000 of 29:25.82 at the Stanford Invitational
- Highest placing American true freshman in the 5,000 at NCAA West Prelims
- Ran season 5,000 best of 13:49.15 at the Payton Jordan Invitational
- USTFCCCA All-Academic
Indoors
- Ran 3,000 personal best 7:55.17 at the Ken Shannon Invitational
- The time placed him No. 2 on Stanford's all-time frosh list behind brother Leo
- Ran season best 5,000 of 13:49.37 at Husky Classic
Cross Country * Pac-12 Champions * West Region Champions - Pac-12 Men's Freshman of the Year
- All-Pac-12 Second Team
- Highest placing American true freshman at NCAA Championships
- Made collegiate debut at the Virginia Invitational, placing 75th
- Stanford's No. 3 runner at NCAA Championships
International/National Competition
- 12th at 2023 U.S. under-20 Cross Country Championships
Prior to Stanford
- Set national high school 5,000 record of 13:34.96 at the USATF Los Angeles Grand Prix on May 26, 2023
- No. 2 in 3,000 on all-time high school list behind brother Nico, with a time of 7:57.06
- Has the first, fourth, and seventh-fastest high school 5,000s in history
- Fastest two-mile of 8:38.72 is No. 9 among high schoolers all-time
- Third in 5,000 at 2023 New Balance Indoor Nationals
- Fifth in the mile at 2023 Nike Outdoor Nationals
- Won the California Division II cross country championship in a division-record time of 14:27.9
- It was the third-fastest time in history over Fresno's 5K Woodward Park course.
- Teamed with twin Leo to win four state cross country team titles and the 2022 Nike Cross Nationals team crown
- His 13:43.95 in the 5,000 against pros at the Sound Running meet in May, 2022, in San Juan Capistrano was a junior class record
- His 14:05.49 to finish third at the 2021 Garmin RunningLane Championships was the third-fastest time high school cross country time over 5K in history.
Personal
- Parents are Lynne and Andrew Young
- Brothers are Nico, a two-time NCAA champion and 2024 Olympian in the 10,000, and twin Leo, a Stanford teammate
- Lex and Leo have their own YouTube channel, "L&L", where they share their running careers and seek to inspire young runners
- Volunteer coach for Camarillo Cosmos Youth Track
Career Results
| Year | Season (Meets) | Event | Season Best | Conf. | Region | NCAA |
| 2023-24 | Outdoors (6) | 5,000 | 13:49.15 | 10 (14:42.97) | 33 (14:29.07) | -- |
| 10,000 | 29:25.82 | 6 (29:51.99) | 25 (29:40.80) | -- | ||
| 1,500 | 3:48.40 | -- | -- | -- | ||
| 3,000 | 8:50.77 | -- | -- | -- | ||
| Indoors (6) | 5,000 | 13:49.37 | -- | -- | -- | |
| 3,000 | 7:55.17 | -- | -- | -- | ||
| Mile | 4:03.12 | -- | -- | -- | ||
| 1,000 | 2:26.21 | -- | -- | -- | ||
| Cross Country (5) | 8K | 23:17.5 | 12 (23:17.5) | -- | -- | |
| 10K | 30:06.2 | -- | 42 (30:06.2) | 74 (30:19.5) |