Results: 2021 Cardiff Cross Challenge, a World Athletics cross country permit, Saturday, October 16.
| ID | Event | Gender | Time |
|---|---|---|---|
| 1 | U11 Girls (1,250m) | F | 11:30 |
| 2 | U11 Boys (1,250m) | M | 11:40 |
| 3 | U13 Girls (2,780m) | F | 11:50 |
| 4 | U13 Boys (2,780m) | M | 12:05 |
| 8 | U17 Men (5,560m) | M | 12:20 |
| 7 | U17 Women (4,450m) | F | 12:45 |
| 9 | U20 Women (4,450m) | F | 12:45 |
| 5 | U15 Girls (3,200m) | F | 13:10 |
| 6 | U15 Boys (3,200m) | M | 13:25 |
| 11 | Senior & MWomen (6,400m) | F | 13:40 |
| 10 | U20 Men (6,400m) | M | 14:25 |
| 12 | Senior & MMen (9,600m) | M | 14:50 |