8.
Athlete: Sydney Thorvaldson
Year: Sophomore, Class of 2021
School: Rawlins (WY)
Analysis: The Wyoming native, who trains at about 7,000 feet of elevation, had quite a freshman debut, winning every single regular season meet in her state, including the Wyoming state championships (17:49.31), before earning a third-place finish at NXR Northwest and a ninth-place result at NXN, which was the second best freshmen finish at nationals. Thorvaldson's career best time came at NXR Northwest, where she ran 17:36.10 for 5K.
Her success, however, did not stop in the fall. She returned to the track in the spring and produced three state titles in the 800m (2:17.27), 1600m (5:03.69) and 3200m (10:47.13). She opted not to run at a national competition following the track season. While we don't see Thorvaldson race against similarly-talented competition much until nationals, there's no doubt she's among the best in the country.

| MILESPLIT50 RANKINGS TABLE | |
|---|---|
| Aug. 14 -- Amaris Tyynismaa | |
| Aug. 14 -- Jenna Fitzsimmons | |
| Aug. 14 -- Taylor Ewert | |
| Aug. 14 -- Sasha Neglia | |
| Aug. 14 -- Victoria Starcher | |
| Aug. 15 -- Grace Ping | |
| Aug. 16 -- Emma Wilson | |
| Aug. 17 -- Corie Smith | |
| Aug. 18 -- Adelyn Ackley | |
| Aug. 19 -- Anna Fenske | |
| Aug. 20 -- Tori Gaitan | |
| Aug. 21 -- Lauren Ping | |
| Aug. 22 -- Lexy Halladay | |
| Aug. 23 -- Tierney Wolfgram | |
| Aug. 24 -- Claire Walters | |
| Aug. 25 -- Ericka Vanderlende | |
| Aug. 26 -- Marlee Starliper | |
| Aug. 27 -- Sydney Thorvaldson | |
| Aug. 28 -- Brooke Rauber | |
| Aug. 29 -- London Culbreath | |
| Aug. 30 | 5 |
| Aug. 30 | 4 |
| Aug. 30 | 3 |
| Aug. 30 | 2 |
| Aug. 30 | 1 |
| Aug. 31 | Final Rankings |