Sumo Dohyō | Sumo Ring

Top view drawing of a Sumo Dohyō measured with length, width and diameter

The Sumo Wrestling Ring, or the dohyō, is a ring used in the sport of Sumo and is traditionally made of clay and rice straw bales. There are two white lines, Shikiri lines, at the center of the ring to designate where the combatants position themselves behind these lines at the start of the bout.

The sumo dohyō is mainly for indoor sports wrestling events for wrestlers with a heavier set. The fine-brushed sand around the ring determines whether a wrestler has his body or foot outside the ring during a sumo fight. A roof structure called the tsuriyane is suspended over the ring.

Scaled illustration of a Sumo Dohyō compared to other sports competition areas

The Sumo Dohyō has a diameter of 14.93’ (4.55 m) and an overall area of 175 ft² (16.26 m²). Sumo Dohyōs have heights between 13.4”-23.6” (34-60 cm) and platform widths of 18.7’ x 18.7’ (5.7 x 5.7 m). The starting lines, or Shikiri lines, are separated by 27.56” (70 cm).

Details

*Under Development*

Height: 
13.4”-23.6” | 34-60 cm
Width:
14.93’ | 4.55 m (Diameter)
Depth:
Length:
14.93’ | 4.55 m (Diameter)
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Weight:

Platform Top: 18.7’ x 18.7’ | 5.7 x 5.7 m
Platform Overall: 23.79’ x 23.79’ | 7.25 x 7.25 m
Tawara Width: 3.94” | 10 cm
Tawara Height: 1.57” | 4 cm
Shikiri Lines: 35.43” | 90 cm
Shikiri Lines Separation: 27.56” | 70 cm
Dohyō Circumference: 46.88’ | 14.29 m
Overall Area: 568.9 ft² | 52.85 m²
Surface Materials: Rice-straw bale perimeter; clay platform; fine sand surface

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Properties

Drawings include:
Sumo Dohyō plan, side elevation (sumo wrestlers)

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Sumo is a type of combative sport, where two individuals attempt to throw the opposing player onto the ground or outside of the rounded boundary. Invented and practiced in Japan, the sport is typically preformed by sumo wrestlers who are heavier set in weight and thereby stronger in force.