The Rolling Maruta (ローリング丸太), or the "Rolling Log" on the G4 broadcast, was an obstacle featured in the First Stage, usually as the second obstacle.

It was first introduced in SASUKE 3 and instantly became one of the hardest obstacles in the stage, eliminating 41 people that day.

In its first tournament, it and the Rope Climb helped decrease the First Stage clears from 34 (in SASUKE 2) to 13.

The function of the obstacle was that the competitor must straddle and cling to a log, 40 centimeters in diameter, before kicking the ground to begin its roll down a 15° decline.

The competitor would only have two wooden bars to hold on to while the obstacle was spinning which the log was notorious for either halting or coming off the track.

The original version lasted from SASUKE 3 to SASUKE 12. After Urushihara Yuuji's kanzenseiha, it was brought out of retirement for SASUKE 25, but was replaced by the Hazard Swing in the following tournament.

It has eliminated some of the top contenders, such as:

In SASUKE 5, Yamada Katsumi almost failed on this obstacle, where at the end of the track, the log came off the track. However, he was thrown to the landing platform and managed to save himself. 

Drawing of the Rolling Maruta

Competitors' Success Rate

  • All results based on the TBS broadcast and external information found
SASUKE Clears Attempts Percentage
3 22 63 34.92%
4 46 57 80.70%
5 31 50 62%
6 63 70 90%
7 29 38 76.32%
8 25 31 80.65%
9 24 32 75%
10 31 40 77.5%
11 35 75 46.67%
12 31 34 91.18%
25 40 47 85.11%
ANW 4 94 98 95.91%
Total 376 537 74.66%
  • It was noted that 41 people failed there in SASUKE 3 and over 40 people failed there in SASUKE 11. Also, it was noted that 51 people failed the Jump Hang in SASUKE 6; therefore, those people must have passed the Rolling Maruta.
  • In a special before SASUKE 15, the completion percentage was said to be (from SASUKE 5 to SASUKE 14, including the Sandan Rolling Maruta found below) 645 clears out of 965 attempts for a percentage of 66.8%. It is unknown how competitors did in each specific tournament; therefore, these numbers are not included in the tables above or below.

Sandan Rolling Maruta

In order to usher in a new era in SASUKE 13, the creators of SASUKE morphed the Rolling Maruta into the Sandan Rolling Maruta (三段ローリング丸太).

The difference was that there are now two drops in the tracks rather than a straight track as used by the original Rolling Maruta.

The log was also notorious for coming off the track (as happened to Ishimaru Kenjirō and Sudō Genki, both in SASUKE 13) or halting its spin midway.

It was replaced with the Log Grip in SASUKE 18 after Nagano Makoto's kanzenseiha.


Yamada Katsumi attempting the Sandan Rolling Maruta in SASUKE 17

Competitors' Success Rate

  • All results based on the TBS broadcast and external information found
SASUKE Clears Attempts Percentage
13 30 40 75%
14 38 46 82.61%
15 21 26 80.77%
16 30 42 73.17%
17 42 48 89.74%
Total 154 192 80.21%

American Ninja Warrior Appearances

The Rolling Maruta (called as the Rolling Log) appeared as the second obstacle on

It proved to be a tough obstacle on American Ninja Warrior 6, as it had took out competitors like Bill Wsetrick and Luis Moco.

However, it was far more difficult, starting on American Ninja Warrior 7, as the log was thinner. It spun around 7-9 times before hitting the landing platform, rather than just 4-6 times on American Ninja Warrior 6. Most competitors had thus lost focus after the frantic rolling of the log, as many were shown to having refocus before the next obstacle.

On American Ninja Warrior 7, it was revealed it had taken out a total of 24 competitors (22 competitors during Orlando qualifiers, and 2 more competitors during Orlando finals).

On American Ninja Warrior 8, the log was modified with block-shaped holes to hold on, instead of ledges. It was also used on American Ninja Warrior 9. Due to the obstacle's design, it was nearly impossible for the log to coming off the track.

Later, the same version was also used on Ninja Warrior UK 3, as the second obstacle in the finals' Stage 1.


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