How Long Is a Baseball Season? MLB Schedule Explained

By Emma Wilson · July 7, 2029

A Major League Baseball (MLB) season typically lasts about 6 months, running from late March or early April to late September, followed by postseason play through October and sometimes early November. The regular season consists of 162 games per team, with spring training beginning in February.

Overview of the MLB Season Structure

The Major League Baseball season is one of the longest in professional sports, spanning over half a year. It includes several distinct phases:

Spring Training: Begins in mid-February
Regular Season: Starts in late March or early April
All-Star Break: Mid-July event
Postseason: Begins in early October
World Series: Typically ends by early November

This extended schedule allows for a comprehensive evaluation of team performance across varying conditions and opponents.

Regular Season Duration and Schedule

When Does the Regular Season Start and End?

The MLB regular season usually begins on the last weekend of March or the first weekend of April. Opening Day marks the official start, with select marquee matchups often played internationally. The 2025 regular season is scheduled to begin on March 27, with most teams starting play on March 30.

The regular season concludes around September 28, after each of the 30 teams completes 162 games. This grueling pace averages to nearly every team playing six out of seven days per week.

Breakdown of Key Season Phases

Understanding the full baseball calendar helps fans appreciate the sport’s rhythm and strategic depth throughout the year.

Spring Training (February – March)

Held primarily in Florida (Grapefruit League) and Arizona (Cactus League), spring training allows players to prepare physically and managers to evaluate rosters. It includes around 30 exhibition games per team.

Regular Season Format

Each team plays 162 games over approximately 183 days. The distribution includes:

19 games against each division rival (76 total)
60–66 games against non-division league opponents
46 interleague games (rotating basis)

All-Star Game and Trade Deadline

The MLB All-Star Game takes place in mid-July and features the best players from the American and National Leagues. Coinciding with this event is the trade deadline, when teams can no longer trade players without waivers.

Postseason (October – Early November)

The postseason expands the season significantly. It includes:

Wild Card Games (best-of-three series)
Division Series (best-of-five)
League Championship Series (best-of-seven)
World Series (best-of-seven)

The exact end date depends on how many games are needed, but the World Series often concludes in early November, especially if it goes to Game 7.

Season Phase	Dates (Typical)	Duration (Days)	Games Per Team
Spring Training	Feb 15 – Mar 25	40	~30
Regular Season	Mar 30 – Sep 28	183	162
All-Star Break	July 14–16, 2025	3	0
Postseason	Oct 1 – Nov 2	33	Up to 20
Total	Feb 15 – Nov 2	~261	~212

Table data source:1, 2

The table illustrates that while the regular season is long, the entire MLB operational window exceeds 8 months. Teams may play up to 212 games including spring training and postseason, making it the most game-intensive major North American sport.

The 2025 season introduces expanded interleague play and earlier start dates to accommodate international games and player rest, reflecting MLB's ongoing efforts to balance competitiveness and athlete wellness.

Frequently Asked Questions About the Baseball Season

How many games are in an MLB regular season?

Each MLB team plays 162 games during the regular season, which is the highest number among major professional sports leagues in North America.

Why is the baseball season so long?

The 162-game season minimizes the impact of randomness and provides a more accurate reflection of team strength over time. It also maximizes revenue from ticket sales, broadcasting, and sponsorships.

When does the MLB postseason start?

The MLB postseason typically begins on the first Tuesday after the regular season ends, usually in early October. Wild Card Series mark the official start of playoff action.

What is the shortest MLB season on record?

The shortest modern MLB season was in 2020, reduced to 60 games due to the COVID-19 pandemic. Normally, even strike-shortened seasons have been at least 100+ games.

Do all teams play the same number of games?

Yes, under normal circumstances, all 30 MLB teams are scheduled to play exactly 162 regular-season games. Weather delays or tiebreaker scenarios may cause slight variations, but these are rare.

Conclusion

The MLB season spans roughly 6 months of regular play and can extend into early November with postseason competition. With 162 games per team and deep playoff rounds, it offers unparalleled endurance and consistency testing in professional sports. From spring training in February to the final pitch of the World Series, the baseball calendar remains uniquely extensive, contributing to its enduring popularity and statistical richness.