Decks

The deck is the wooden plank portion of the skateboard that you stand on. There are a number of significant design features to a longboard deck (in roughly cascading order of importance):

• Wheelbase
• Width
• Concave
• Shape
• Length

Wheelbase

Many novice skaters tend to start with the length of their board first, but tip-to-tail length is functionally less impactful than wheelbase in a long skateboard context. Wheelbase decides how large your stance is (since your front foot is always relegated to just behind the front bolts), and has a hand in deciding the turning radius of your board (if trucks are held constant).

There are tropes to wheelbases:

• Street and cruiser-style skateboards tend to have a 14 inch wheelbase.
• Oversized skateboards (like the Zenit Morning Wood) have a 17 inch wheelbase.
• Downhill/freeride style longboards range between 19-23 inches.
• Dancer/freestyle longboards range upwards of 28-30 inches.

The wheelbase also has a hand in what style truck you might pick for your setup:

• Under 18 inches, setups are best with skateboard-style traditional kingpin (TKP) trucks, like Independents, Bennetts, Paris Streets, Caliber Standards.
• Between 18-21 inches, there’s an overlap area. Some skaters will run TKPs, while others choose big split or slalom/race-style reverse kingpin (RKP) trucks.
• Over 21 inches, setups work best with longboard-style reverse kingpin (RKP) trucks, like Caliber, Paris, and Sabre trucks.

Novice skaters sometimes assume that a short wheelbase is inherently less stable than a long wheelbase. This is not accurate. Wheelbase is only one variable influencing how a board turns and feels at speed. Truck geometry, baseplate angle, and overall setup can significantly alter effective turning radius and stability characteristics, allowing a shorter wheelbase to be tuned for control just as a longer one can be made to steer aggressively.

It’s often best to choose a wheelbase that suits the application best as above, and then fine tune with your truck choice and setup.

Width

Contrary to many first impressions, width has nothing to do with stability. Rather, it has everything to do with your foot size.

Let’s talk biomechanics.

Your feet are control surfaces. The ball of your foot applies toeside pressure. The heel applies heelside pressure. The span between them functions as a single continuous lever. When you lean, you are not simply shifting weight; you are applying torque through that lever into the deck, which then transfers into the trucks.

Control improves when that lever is matched. There are two error cases:

• If your deck is significantly narrower than your foot, part of that lever hangs off the rail. You lose mechanical support and things can get twitchy. You may deal with toe or heel drag.
• If the deck is excessively wide relative to your foot, your heel and toes sit too far from the rail, increasing the effort your ankle must output to generate the same torque. That’s plain inefficiency.

In an idealized sense, maximum mechanical efficiency occurs when the usable width of the deck matches the functional lateral width of your foot.

So, the average shoe size of a male in the USA is 9.5. That’s about 10.75 inches long. Should we all skate a 10.5 inch board on average?

Also no, because most skaters do not stand french-fries (perpendicularly) on a skateboard. Instead, most experienced skaters stand with their feet at a forward-facing 50° angle. With some math, we find that the lateral span of a 9.5US foot standing at a 50° angle is about 8.5 inches. Indeed, you’ll find most performance-oriented downhill skaters skating boards that are between 8.3″ and 9″.

If you want to figure out the ideal width of the deck in relation to your foot, use the below equation:

Where, L is the length of your foot in inches, θ is the angle your foot stands at on your deck, and W is the resulting width in inches.

With all this being said, 10″ is surely too wide for most skaters. 8″ is a little too narrow for most skaters. I would recommend that the average skater would likely find comfort between 8.5″ and 9.5″.

Concave

Concave is the way the deck curves underneath your feet.

There is a very long and various history of concaves in longboarding, especially in a downhill/freeride context. A short index of words describing concave and features:

• “Flatcave”, flat or nearly flat with very few features.
• “Tubcave”, where the center of the board is flat but comes up steeply near the rails (see Rayne Vandal).
• “Radial”, a circular section.
• “Progressive”/”Eliptical”, an egg-shaped, ovoid section.
• “W-concave”, where there is a spine of raised convex in running down the middle of the deck.
• “Drop”, a bend in the board to drop the platform down about half an inch.
• “Micro-drop”, a very shallow bend often found on downhill boards.

Concave is extremely subjective; choose your poison. In 2026, most downhill skaters prefer flatcave decks with added concave implants. Most dancing/freeride decks are a very mellow progressive concave. Most cruisers tend to be a radial concave based on the skateboard molds they’re usually pressed in.

Shape

Shape tends to be an aesthetic choice or an afterthought if you’re doing specs-based shopping. However, there are some important considerations to shape depending on what you are skating. Some particular cases:

• Some shapes of kicktails pop better than others, with kicktail shapes that converge to a round end (like on a traditional street skateboard) popping the best.
• Some downhill skateboards have taper, where the deck is wider up front than in the rear. Some skaters like this for transferring from toe to heel very quickly.
• If the nose tapers down to a point too far down the deck, it can be hard to stand on your front trucks. Consider this especially if you skate downhill or freeride.
• If the nose or tail are shaped to create negative space for the wheels (see Landyachtz Top Speed), you may find it impossible to stand on the trucks. Consider this especially if you skate downhill or freeride.

Length

As long as you consider wheelbase, length is often an afterthought. Some enthusiast skaters like the novelty of an extremely long longboard as an expression of comedy or surf culture (see Hamboard).

You may work backwards from length if physical storage is a part of your equation- for example, a locker or space under a cubicle desk. In these cases, many skaters are a big fan of pinner-style shortboards (see Comet Cruiser, Landyachtz Dodger) as they maximize wheelbase and standing platform while being compact overall.