Here are the main similarities and differences between surfing and stand up paddle boarding:
1. The force is different: SUP paddle boards and surfboards can both surf, but the most obvious difference between the two is that stand-up paddle boards or SUP use paddles to move,
while surfboards use the body of the surfer, according to the center of gravity. Offset to ride waves or steer.
2. Different shapes: The size of stand-up paddle boards and surfboards is very different. The SUP board is much longer, generally more than 10 feet 6 in China,
and usually heavier and thicker. Surfboards typically range in size from 5 to 9 feet and are lighter.
3. Different volume: Stand up paddle boards usually have more volume than surfboards.


Surfboards are mainly used for surfing on the sea, while paddle boards are mainly used for playing in still water lakes. There is a very clear definition and distinction between the two.
Inflatable surfing boards are often used in surfing competitions and are popular among surfers who prefer to ride smaller or deeper waves.
On the other hand, a paddle board is a board that is used by swimmers and surfers who want to paddle out to larger waves or to a specific location.
It is typically shorter and wider than an inflatable surfing board, and is designed to be paddled using two paddles.
In summary, while both inflatable surfing boards and paddle boards are boards that are used for water sports, they are designed for different purposes and are used by different types of athletes.