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Mills Costello
Class of 2027 · Northfield, MA
High school track and field athlete profile
National rank · #8379
MA rank · #248
0 stars ☆☆☆☆☆
Main · 3000m
Secondary · 800m
Athlete overview
Graduation year
2027
Hometown
Northfield, MA
School / team
Northfield Mount Hermon
Primary event
3000m
Secondary event
800m
Results tracked
17
Star rating
0
TRAX-Score
57.257
Top-End
57.9
Consistency
56.1
Versatility
57.4
Big Meet
57.7
Personal records
Best scored mark in each event across the athlete's complete performance history.
5 events
800m
PR
2:07.79
Outdoor · 2026
Event Score 48.2
1500m
PR
4:29.96
Outdoor · 2026
Event Score 43.8
3000m
PR
9:24.74
Outdoor · 2026
Event Score 51.8
2 Mile
PR
11:45.00
Indoor · 2025
Event Score 19.4
5000m
PR
16:32.89
Cross Country · 2025
Event Score 45.5
Performance history
17 results shown
All events
All years
| Event | Mark | Event Score | Meet | Year | Season | Place |
|---|---|---|---|---|---|---|
| 3000m | 9:24.74 | 51.8 | PATF vs. Loomis and NMH | 2026 | Outdoor | 1 |
| 3000m | 9:31.06 | 48.9 | NEPSTA DI Championship | 2026 | Outdoor | 9 |
| 800m | 2:07.79 | 48.2 | Northfield MH, Deerfield @ PEA | 2026 | Outdoor | 6 |
| 5000m | 16:32.89 | 45.5 | Monadnock Moonlight Madness | 2025 | Cross Country | 17 |
| 5000m | 16:34.36 | 45.2 | Deerfield Academy XC Invite | 2025 | Cross Country | 9 |
| 1500m | 4:29.96 | 43.8 | Northfield MH, Deerfield @ PEA | 2026 | Outdoor | 4 |
| 3000m | 9:43.34 | 43.7 | St. Paul's School TF Meet 1 | 2026 | Outdoor | 1 |
| 5000m | 16:59.40 | 39.1 | Brooks XC Championships Northeast | 2025 | Cross Country | 63 |
| 5000m | 16:59.40 | 39.1 | SPS home XC | 2025 | Cross Country | 7 |
| 1500m | 4:36.66 | 37.7 | NMH vs Deerfield | 2026 | Outdoor | 3 |
| 1500m | 4:38.13 | 36.4 | NMH vs Deerfield and Exeter | 2025 | Outdoor | 7 |
| 5000m | 17:12.00 | 36.2 | NEPSTA Division 1 Cross-Country Championships | 2025 | Cross Country | 16 |
| 3000m | 10:10.24 | 33 | NMH vs Suffield, Williston, Miss Porters | 2025 | Outdoor | 3 |
| 1500m | 4:44.27 | 31.3 | Loomis Chaffee T&F vs AOF/NMH/Andover | 2025 | Outdoor | 11 |
| 3000m | 10:30.96 | 25.6 | NMH vs Choate | 2025 | Outdoor | 5 |
| 3000m | 10:38.31 | 23.2 | Tri-Meet: Deerfield Academy, Phillips Exeter Academy, Northfield | 2024 | Outdoor | 10 |
| 2 Mile | 11:45.00 | 19.4 | NEPSTA All-Comers | 2025 | Indoor | 7 |
