Disc golf flight numbers explained: speed, glide, turn and fade

The four flight numbers printed on a disc are speed, glide, turn and fade, in that order. Speed is how fast the disc is designed to fly, glide is how well it holds the air, turn is how much it drifts right early in its flight, and fade is how hard it hooks left at the end. Turn and fade both assume a right-handed backhand throw (Innova).

This four-number system was developed by Innova co-founder Dave Dunipace (Innova).

The four numbers at a glance

Number	Range	What it tells you	Higher number means
Speed	1 to 14	How fast the disc is designed to travel, and how much power it needs to fly as intended	Faster, and needs more arm speed
Glide	1 to 7	How well the disc keeps its loft in the air	Stays up longer
Turn	+1 to -5	How much it banks right during the fast, early part of the flight (right-hand backhand)	More negative = drifts right more
Fade	0 to 5	How hard it hooks left as it slows down at the end (right-hand backhand)	Stronger hook at the finish

Ranges are from Innova’s Flight Ratings System (Innova).

How to read a disc’s flight numbers

Take Innova’s Wraith, rated 11 | 5 | -1 | 3 (Innova):

1. Speed 11: a high-speed distance driver. It needs a strong throw to fly the way the numbers describe.
2. Glide 5: good glide, so it stays in the air well.
3. Turn -1: a little drift to the right early in the flight.
4. Fade 3: a noticeable hook left at the end.

Read left to right, that’s the flight: fast and floaty, a slight move right, then a clear finish to the left.

Stability: which way a disc flies

You’ll also see discs described by stability, which Innova defines by the direction of the flight on a right-hand backhand (Innova):

• Understable: a flight that turns right.
• Stable: a flight that doesn’t turn.
• Overstable: a flight that turns left.

Speed and disc types

Speed largely decides what kind of disc it is. Innova’s website sorts its own discs into these categories by speed (shown in the site’s disc menu at innovadiscs.com):

Disc type	Innova speed range
Putt & approach	1–3
Midrange	4–5
Fairway driver	6–9
Distance driver	10–14

UDisc’s guide puts midranges at speed 2 to 6, with almost all of them between 4 and 6 (UDisc).

What flight numbers should beginners look for?

Innova’s guidance for new players comes down to three things (Innova, Innova):

• Lower speed. High-speed discs need more power to fly properly, so they aren’t usually recommended for beginners. At a beginner’s arm speed they may not fly the way their numbers describe. Lower-speed discs are a better place to start.
• More glide. Discs with more glide are best for new players.
• More turn (a more negative number). Discs with more turn are easier for beginners to throw. Innova notes that discs rated -2 to -5 turn tend to be easier to throw for a full flight.

How to use flight numbers to pick a disc

1. Choose the disc type by speed. Decide whether you need a putter, midrange, fairway driver or distance driver, using the speed table above.
2. Compare discs at that one speed. Glide, turn and fade only line up fairly between discs with the same speed (Innova).
3. While you’re learning, favor more glide and more negative turn at that speed, per Innova’s beginner guidance above.
4. Compare within one brand. Brands rate differently, so check numbers against the same manufacturer’s other discs (Innova).
5. Expect some difference on the course. Use the numbers as a starting point, not a promise.

Limits of flight numbers

Flight numbers are useful, but they’re guidelines, not guarantees (Innova):

• Compare within the same speed. Glide, turn and fade only compare fairly between discs with the same speed rating. A speed 12 driver’s turn isn’t directly comparable with a speed 5 midrange’s (Innova).
• Compare within the same brand. Each company rates its discs differently, so Innova says its ratings shouldn’t be used to compare discs between brands (Innova).
• Your arm changes the flight. Two players can get different results from the same disc because of arm speed and throwing style (Innova).
• Conditions and plastic matter. Wind, elevation, the plastic type and wear all change how a disc flies. Worn discs tend to turn more and fade less, and premium plastics keep their original flight longer than baseline plastics (Innova).
• Lefties and forehands are mirrored. The ratings assume a right-hand backhand. For a left-hand backhand or a right-hand forehand, turn and fade go the other way (Innova).

Sources

• Innova: Understanding Flight Numbers, December 20, 2022. Accessed October 27, 2026.
• Innova: Flight Ratings System. Accessed October 27, 2026.
• Innova: Flight Numbers Made Simple, April 21, 2026. Accessed October 27, 2026.
• UDisc: Disc Golf Discs Explained, Midranges, August 28, 2020. Accessed October 27, 2026.