Last updated July 24, 2026
Measure the base path and the pitching distance before your team takes the field, not after the umpire shows up. If the field is chalked for a different age, raise it at the home plate meeting. Ground rules of the park and the game must be covered there with both head coaches and the umpire in charge.
Pitching distance is measured from the pitching rubber to home plate. At 7U and 8U that is the plate the coach pitches from.
| Division | Pitching distance | Base path | Mound height | Fence (recommended) |
|---|---|---|---|---|
| 7U | 40' | 60' | 0" (flat ground) | 180' |
| 8U | 40' | 60' | 0" (flat ground) | 180' |
| 9U | 46' | 65' | 4" | 200' |
| 10U | 46' | 65' | 4" | 210' |
| 11U | 50' | 70' | 4" | 250' |
| 12U | 50' | 70' | 4" | 250' |
| 13U | 54' | 80' | 4" | 300' |
| 14U | 60' | 90' | 6" | 375' |
The two jumps that catch coaches out. 13U moves up to a 54' rubber and an 80' base path. 14U goes to a full 60' rubber, 90' bases, and a 6" mound, the same field the high school ages play on.
The fence numbers above are recommendations, not requirements. Real parks vary. Short fences, unfenced outfields, and any park specific boundary belong in the ground rules you cover at the home plate meeting.
Coach pitch fields carry three markings the older divisions do not.
Where the player pitcher has to stand. Within 2 feet of either side of the pitcher's plate, with at least one foot inside the circle. He cannot be in front of the pitcher's plate before the pitch, and he must remain behind the pitching rubber until the pitch is thrown. He cannot leave the pitching circle until the ball is hit. Leaving early carries a penalty that escalates on repeat offenses, covered in the 7U and 8U playing rules.
COYBL divisions run 7U through 14U. For reference, the full dimension chart also covers: