Little League Field Dimensions: Official Measurements

Baseball fields scale up in size as players grow older and stronger, with different dimensions for each age group to match their developing abilities. This guide covers official Little League Baseball dimensions for the Major Division, which is the most widely used format for competitive youth baseball. These little league field dimensions are specifically designed for players aged 9-12, striking the perfect balance between challenge and achievability as young athletes learn the fundamentals of the game.

Shop Little League Baseball Equipment

Little League Field Terminology

Understanding the language of the baseball field is key when maintaining little league fields to official standards.

• Baselines: The lines connecting each base, forming the diamond's perimeter
• Base Paths: The running lanes between bases, typically 3 feet wide
• Diamond: The square formed by the four bases
• Infield Dirt: The dirt portion of the infield where the bases and pitcher's mound are located
• Grass Line: The boundary between the infield dirt and the outfield grass
• Pitcher's Mound: The raised circle where the pitcher delivers from, 18 ft in diameter (at Major Division level)
• Pitcher's Rubber: The 24 in x 6 in rubber slab the pitcher uses as a starting point
• Foul Lines: The lines extending from home plate through first and third base to the outfield fence
• Fair Territory: The area inside the foul lines where batted balls are in play
• Foul Territory: The area outside the foul lines
• On-Deck Circles: 5-foot diameter circles where batters warm up (one on each side)
• Dugouts: Team bench areas, typically 25 feet long
• Warning Track: A strip of contrasting surface along the outfield fence that alerts fielders they are approaching the wall

Little League Infield Dimensions

Standard little league dimensions use a 60-foot base path system that forms the infield diamond. Each baseline measures exactly 60 ft from the back corner of one base to the back corner of the next, creating a perfect square.

The little league base distance from home to second is 84 ft 10¼ in. This diagonal measurement, taken from the back tip of home plate to the center of second base, is the quickest way to verify your diamond is correctly squared.

The little league pitching distance is 46 ft from the back tip of home plate to the front edge of the rubber. The rubber is centered within an 18-ft-diameter raised circle that sits 6 inches above the infield. This little league mound distance has been set by Little League International to match the arm strength and development of 9-12-year-old players.

This pitching distance also determines what size batting cage your league needs. A 55-foot cage covers all Little League distances with room behind the pitcher for a machine or coach. For complete sizing and equipment guidance, see our batting cage dimensions for youth baseball guide.

Pro tip: The pitcher's mound is one of the most weather-vulnerable spots on a youth diamond. Rain spot covers provide targeted protection for the mound and home plate area, and full infield rain tarps cover the entire skinned area when heavier weather is expected.

Little League Dimensions by Age Division

Little League Baseball uses different field dimensions for each age division. The Major Division (9-12) is the most common, but here's how it compares across the full Little League system.

Notice that the jump from Major Division to Intermediate adds 10 ft to the baselines and 4 ft to the pitching distance, while the jump to Junior League moves players to a full-size 90-ft diamond. These gradual increases match the physical development of young athletes and keep gameplay competitive at every stage.

For a detailed comparison that extends beyond Little League into high school, college, and pro levels, see our complete Baseball Field Dimensions Guide.

Little League Outfield Requirements

The outfield dimensions of a Little League Major Division field allow more flexibility than the infield, letting leagues adapt to available space while maintaining safety and playability.

• Minimum fence distance: 200 ft from home plate (recommended)
• Maximum fence distance: 225 ft from home plate
• Fence height: Minimum 4 ft, with 6 ft being standard

Leagues that share fields with older divisions often utilize Grand Slam Fencing to set temporary outfield boundaries at the correct little league dimensions without permanently altering the layout for other age groups.

Backstop Dimensions & Positioning

The backstop is a critical safety feature on any little league field, protecting spectators from wild pitches and foul balls.

• Distance from home plate: Minimum 25 ft (40-60 ft is optimal)
• Height: Minimum 20 ft, with 30 ft being standard
• Width: Should extend at least 20 ft on each side of home plate

If your backstop is built from hard materials like concrete, wood, or chain-link, adding backstop padding reduces ricochet risk and protects young catchers who are still learning to manage the area behind the plate. Backstop and foul ball netting extends spectator protection down the foul lines, which is especially important at youth fields where families sit close to the action.

Little League Field Equipment Checklist

Beyond accurate little league field dimensions, a youth facility needs the right equipment to keep players safe and fields in playing condition:

• Full Infield Rain Tarps - protect base paths and mound from rain
• Rain Spot Covers - targeted coverage for mound and home plate
• Backstop & Foul Ball Netting - spectator and player protection
• Backstop Padding - reduce ricochet and impact injuries
• Portable Outfield Fencing - set temporary boundaries for shared-use fields
• Fence Top Padding - protect players from exposed chain-link edges
• Batting Cages - practice facility for developing hitters

Shop Little League Baseball Equipment

Frequently Asked Questions About Little League Baseball Fields

What is the little league pitching distance?

The little league pitching distance is 46 ft, measured from the back tip of home plate to the front edge of the pitcher's rubber. This distance applies to both the Major Division (9-12) and the Minor League division. The Intermediate (50/70) division extends the pitching distance to 50 ft, and Junior League moves to the full 60 ft 6 in used at the high school and professional levels.

How far apart are bases in little league?

The little league base distance is 60 ft between adjacent bases for the Major Division. This is measured from the back corner of one base to the back corner of the next, following the same measurement pattern used at every level of baseball. The Intermediate division increases this to 70 ft, and Junior League uses the standard 90-ft baselines.

What are little league infield dimensions?

Little league infield dimensions form a 60-ft square with a home-to-second diagonal of 84 ft 10¼ in. The pitcher's rubber sits 46 ft from home plate on a mound elevated 6 inches above baseline level. The mound itself is an 18-ft-diameter circle, the same size as at every level of organized baseball.

What is the little league mound distance?

The little league mound distance is 46 ft from home plate to the front edge of the rubber. The mound is raised 6 inches above the infield, which is lower than the 10-inch elevation used at high school, college, and professional levels. This lower mound height is designed to reduce arm strain on developing pitchers.

What size field does 10u and 12u play on?

Both 10u and 12u players in the Little League Major Division play on the same field: 60-ft baselines with a 46-ft pitching distance. The outfield fence sits between 200-225 ft from home plate. Some local leagues use slightly different configurations for 10u, so always check your league's specific rules before setting up.

Do Little League Major Division dimensions differ from other divisions?

Yes. Little League Baseball scales field dimensions by age group. The Major Division (9-12) uses 60-ft baselines and a 46-ft pitching distance. The Intermediate (50/70) division adds 10 ft to baselines and 4 ft to pitching distance. Junior League (12-14) moves to a full 90-ft diamond with 60 ft 6 in pitching. See the age division comparison table above for all levels side by side.

What are official little league dimensions for the outfield?

Little League recommends outfield fence distances between 200-225 ft from home plate for the Major Division, with a minimum fence height of 4 ft and a standard of 6 ft. These dimensions are based on the official Little League International field layout.

Explore field dimensions at every level, from youth leagues to the pros, in our Baseball Field Dimensions Guide.

For details on professional stadium layouts, check out our MLB Stadium Dimensions Guide.

Prefer softball? Visit our Softball Field Dimensions Guide.