Flag Football Field Dimensions: 5v5 and 7v7

The most widely used flag football field is NFL FLAG’s 5v5 standard: 30 yards wide by 70 yards long, made up of a 50-yard field of play plus two 10-yard end zones, with a first-down line at midfield. There is no single official 7v7 size, but leagues typically use a wider and longer field than the 5v5 game, so 7v7 dimensions are best confirmed with your own league.

That gap, one clear standard for 5v5 and a range of sizes for everything else, is the main thing to understand. Field size in flag football is set by the organizing body, so the “official” dimensions depend on whose rules you are playing under.

The 5v5 standard

The 5v5 format run under NFL FLAG rules is the closest thing the sport has to a universal field. It measures 30 yards wide by 70 yards long. Of that length, 50 yards is the field of play and the remaining 20 is split into two 10-yard end zones, one at each end.

A line drawn at midfield serves as the first-down marker. Rather than measuring first downs every 10 yards as in the 11-man game, most 5v5 rules give the offense a new set of downs for crossing midfield, which keeps the smaller game fast and simple. No-run zones are often marked just before midfield and each end zone to stop teams simply bulldozing forward.

5v5 vs 7v7 at a glance

The table below compares the common 5v5 standard with a typical 7v7 setup. Treat the 7v7 and high school figures as representative examples, not fixed law, because those formats vary by league.

Format	Typical length	Typical width	End zones
NFL FLAG 5v5	70 yards	30 yards	Two 10-yard
Common 7v7	~80 yards	~40 yards	Two 10-yard
High school (varies)	~80–100 yards	~40 yards	Two 10-yard

Why 7v7 fields are bigger

Adding two players per side means more bodies in the same space, so 7v7 leagues usually widen and lengthen the field to keep the game open. A common 7v7 layout runs around 40 yards wide by 80 yards long with two 10-yard end zones, though plenty of leagues tweak these numbers. Some 7v7 programs also change how first downs work, using multiple first-down lines rather than a single midfield marker.

Because organizers set their own dimensions, the golden rule is to read your league’s rulebook before assuming a size. Two 7v7 leagues in the same city can play on noticeably different fields.

High school and school leagues

School flag football, including the fast-growing girls’ varsity game, is governed at the state association level, so sizes differ from state to state. A frequently used layout is 80 yards long by 40 yards wide with two 10-yard end zones, while some programs simply mark up a standard 100-yard football field. There is no national high school field size that overrides the individual state associations.

How it fits with the rest of the game

Field size shapes strategy, so it helps to pair this with the wider rules. Our flag football rules guide covers downs, flag-pulling and scoring, while flag football positions explains how the smaller rosters line up on these compact fields. And if you want a sense of scale against the professional game, our look at the biggest NFL stadiums shows just how much larger the 11-man field and its surroundings are.

The short version: for 5v5, expect a 30 by 70 yard field with two 10-yard end zones and a midfield first-down line. For 7v7 and school play, expect something larger, but confirm the exact size with your league, because in flag football the rulebook, not a single national standard, sets the dimensions.