- 1500m Middle School Enroute 99th PR4:43.74a
- 1600m Middle School Enroute 97th PR4:59.38a
- 1mile Middle School 97th PR5:00.75a
Athlete
Cillian O'Brien
· 2026
Personal records
| Event | PR | Where | 2026 | Furthest |
|---|---|---|---|---|
| 1500m · 1 | 4:43.74a | Nike Outdoor Nationals & USATF U20 Championships · Jun 18, 2026 | 4:43.74a | |
| 1600m · 1 | 4:59.38a | Nike Outdoor Nationals & USATF U20 Championships · Jun 18, 2026 | 4:59.38a | |
| 1mile · 1 | 5:00.75a | Nike Outdoor Nationals & USATF U20 Championships · Jun 18, 2026 | 5:00.75a |