Softball Rules Explained: Fastpitch vs Slowpitch, NCAA vs High School

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Bottom of the seventh, runner on second, one out. The third baseman creeps in for the bunt, the batter squares around, then pulls the bat back and slaps the ball past her. If you’ve ever sat in the bleachers wondering why the runner left early, why the game went to an eighth inning with someone already on second, or why the pitcher is so close, this page is for you. These are the softball rules in plain words: fastpitch vs slowpitch, how USA Softball, high school (NFHS) and college (NCAA) rules differ, and the pitching distance for every age.

Who writes the softball rules

• USA Softball, the national governing body, writes the rules for most youth travel ball, adult leagues and its national championships.
• The NFHS (National Federation of State High School Associations) writes the high school rulebook; each state association can adopt its own extra rules.
• The NCAA writes the college rules and keeps its own approved bat list.
• USSSA and other sanctioning bodies run travel tournaments under their own rulebooks.
• The WBSC (World Baseball Softball Confederation) writes the international rules used at World Cups and the Olympics.

USA Softball publishes a yearly chart comparing its rules with the NCAA’s and the NFHS’s. Most of what follows comes from the 2026 edition, so it’s current as of the 2026 season. Always check your own league or state, because local rules can add to these.

Fastpitch vs slowpitch

Both games use the same diamond, underhand pitching and seven-inning games. The difference is the pitch, and it changes everything.

• Fastpitch: the pitcher uses a fast windmill motion from 43 feet (for girls and women from 14U up). Strikeouts are common, and bunts, slap hits and stolen bases are part of the game. This is what kids, high schools, colleges, the pros and the Olympics play.
• Slowpitch: the pitch is lobbed in an arc that, under USA Softball rules, must peak between 6 and 12 feet above the ground. Pitchers stand farther back (50 feet for USA Softball teenage girls’ divisions), fences are deeper, and the game is about hitting and fielding. Most adult rec leagues are slowpitch.

Softball pitching distance by age

Bases are 60 feet apart in fastpitch at every age, for girls and boys. The pitching distance grows with the players:

Level	Girls / women (fastpitch)	Boys / men (fastpitch)
10U (USA Softball)	35 ft	35 ft
12U (USA Softball)	40 ft	40 ft
14U, 16U, 18U (USA Softball)	43 ft	46 ft
High school (NFHS)	43 ft	46 ft
College (NCAA)	43 ft	–

USSSA is close but not identical. Its girls pitch from 35 feet through 10U, 40 feet at 11U and 12U, and 43 feet from 13U up, so check the rulebook of the tournament you’re entering. The jump from 40 to 43 feet is a big one for young pitchers, which is one more reason to keep pitch counts sensible that year (see our youth softball guide).

Slowpitch is farther: USA Softball uses 40 feet at 10U, 46 feet at 12U and 50 feet from 14U for girls, and high school slowpitch uses 46 or 50 feet depending on the ball.

USA Softball vs NFHS vs NCAA: the big differences

Rule	USA Softball (youth)	High school (NFHS)	College (NCAA)
Run rule	15 runs after 3 innings, 12 after 4, 8 after 5	Set by each state association	8 runs after 5 innings
Extra innings	Tiebreaker from the 8th: the player due to bat last that half-inning starts on second base	Tiebreaker only if the state adopts one	Tiebreaker may be used after 7 innings, decided before the game
Time between pitches	20 seconds to release the pitch	Same as USA Softball	20 seconds to start the windup; a visible clock is optional
Bats	USA Softball certification mark, not on the non-approved list	USA Softball certification mark, not on the non-approved list	Must be on the NCAA Approved Softball Bat List
Batting helmet face mask	Required (NOCSAE-approved)	Required	Optional
Double first base	Required	Allowed if the state adopts it	Required in Division I from 2026; Divisions II and III from 2027
Metal cleats	Only in older top-level (14U–18U A/B Gold) divisions	Allowed	Allowed

A double first base is a 15-by-30-inch base with half in fair territory and half in foul territory. The fielder uses the fair half and the batter-runner runs to the other half, which helps prevent collisions at first.

Innings, game length and the tiebreaker

A regulation game is seven innings in high school, college and USA Softball play. Many youth tournaments also use a time limit; at USA Softball national tournaments it’s 1 hour and 40 minutes, with the inning finished, and championship games have no time limit. If the game is tied after seven, the international tiebreaker speeds things up: each half-inning starts with a runner on second base. It’s why extra-inning softball games rarely last long.

Pitching rules in short

• Start position: both feet on the ground and touching the pitching plate (the “rubber”) at the start.
• Leaping is legal: pushing off and dragging the pivot foot, or having both feet in the air, is allowed in USA Softball, NCAA and high school rules.
• Illegal pitch: the standard penalty is a ball awarded to the batter. If she hits it, reaches first and every runner moves up at least one base, the play simply stands; otherwise the offense can choose the play or the penalty.
• The clock: 20 seconds between pitches, to keep the game moving.

None of these rules limit how many pitches a pitcher can throw. That’s left to coaches, parents and a few leagues, and it’s one of the biggest health questions in the sport (see our softball injuries page).

Base running, bunts and slaps

In fastpitch, runners can’t lead off. They may leave the base once the pitcher releases the ball, which is why a quick catcher’s throw matters so much. In some younger divisions, stealing is limited or not allowed at all. A bunt is a ball tapped with the bat, not swung at. In high school and college, holding the bat in the strike zone counts as a bunt attempt, so to take the pitch the batter has to pull the bat back and away; USA Softball doesn’t count a bat simply held in the zone. A slap is a running swing, usually by a fast left-handed batter, meant to put the ball on the ground and beat it out.

Lineups, the DP/Flex and positions

Nine players start on defense: pitcher, catcher, first base, second base, shortstop, third base, left field, center field and right field. In fastpitch, a team may use the DP/Flex: the Designated Player bats but doesn’t have to field, and the Flex plays defense but doesn’t have to bat, so a team can bat 9 or 10. USA Softball youth play also allows an Extra Player (EP) in the batting order. High school teams need nine to start and eight to finish.

Field, ball and safety equipment

• Fences: NFHS fastpitch fields have fences 185–235 feet from home plate; slowpitch fences are farther (250–275 feet for women, 275–300 for men).
• The ball: 12 inches around for most fastpitch play; 11 inches for 10U and younger in USSSA. Game balls must carry the right certification (the NFHS Authenticating Mark in high school).
• Bats: USA Softball’s official bat is no more than 34 inches long, 38 ounces and 2.25 inches in diameter. More in our softball gear guide.
• Catchers: a helmet and mask with a throat protector at every level.
• Fielders: any defensive player may wear a helmet or face mask; some states require masks for pitchers and corner infielders.

Two things for the bag that follow the rules: a dozen Rawlings Official NFHS Dream Seam fastpitch softballs (12-inch, USA Softball and NFHS approved, about $75 a dozen on Amazon in October 2026) for practice that feels like games, and a Rawlings HI-VIZ fielder’s mask (stainless steel wire, about $60) for pitchers and corner infielders. For tournament days, Nuun Sport electrolyte tablets are an easy add to a water bottle.

Back to the softball hub, or see softball leagues and associations, youth softball and softball gear. Also play basketball in the winter? Our basketball rules page compares those rulebooks the same way.

Softball rules FAQs

How many innings are in a softball game?

Seven in high school, college and USA Softball play. Youth tournaments often add a time limit, and a run rule can end a game early, such as 8 runs after 5 innings in college.

How far is the pitcher from home plate in softball?

In girls’ and women’s fastpitch, 43 feet from 14U through college. USA Softball uses 35 feet at 10U and 40 feet at 12U. Older boys and men pitch from 46 feet.

Can a softball runner lead off?

No. In fastpitch, runners must stay on the base until the pitcher releases the ball, so there’s no leading off like in baseball.

What is the international tiebreaker in softball?

From the eighth inning, each half-inning starts with a runner on second base: under USA Softball rules, the player scheduled to bat last in that inning. High school uses it only where the state adopts it.

Are face masks required in softball?

For batters, yes, in high school and USA Softball fastpitch: helmets must have a NOCSAE-approved face mask. For fielders they’re optional nationally, though some states and leagues require them for pitchers and corner infielders.