Baseball Field Dimensions by Age: Bases and Mound

The distances

Level	Bases	Pitching distance	Fence (recommended)
Little League Tee Ball	60 ft (or 50 ft, league’s choice)	none
Little League Minors and Majors	60 ft	46 ft	200 ft
Little League Intermediate (50/70)	70 ft	50 ft	200 ft
Little League Junior	90 ft	60 ft 6 in	300 ft
Little League Senior	90 ft	60 ft 6 in	300 ft
High school, college and MLB	90 ft	60 ft 6 in

Bases is the distance from one base to the next (home to first, first to second, and so on). Pitching distance is from the front of the pitcher’s plate to the back point of home plate.

Little League’s fence distances are recommendations: plenty of local fields are shorter or deeper.

The step up at 13

The jump from 60 feet to 90 feet is the biggest change in youth baseball. Little League softens it two ways:

• Intermediate (50/70) plays on 70-foot bases with a 50-foot pitching distance, a step in between for 11- to 13-year-olds.
• Junior League can shorten its 90-foot field to 75-foot bases and 54 feet, in the regular season only.

Every throw gets longer on the big field: from the mound, from shortstop, and from the catcher to second. Pitch count limits change with age too; see the pitch count calculator.

High school and up

High school, college and professional fields are the same: 90-foot bases, a 60-foot 6-inch pitching distance, and a raised pitcher’s mound (10 inches high in college and the majors).

Other youth leagues

PONY, Cal Ripken, Babe Ruth and other leagues also step up from smaller fields to 90 feet, but each sets its own distances by age. Check your league’s rulebook or ask the league.

Bats change with the field

Leagues usually change bat rules around the same ages: Little League’s 33-inch limit goes up to 34 inches at Intermediate and Junior. UsedBatFinder has bat rules by league and a bat size guide.