PURPOSE: To obtain stable whole distance runnable performance in a large step difference part by rotating front wheels, central wheels and rear wheels respectively independently, suspending six wheels independently, and arranging the rear wheels on a main shaft member so as to be capable of rolling, pitching and yawing freely.

CONSTITUTION: This off road travel six wheeler R has left and right front wheels W1 and W4, left and right central wheels W2 and W5 and left and right rear wheels W3 and W6, and the respective wheels W (W1 to W6) are installed in the lower end parts of respective wheel arms A1 to A6. The respective arms A1 to A6 are suspended though shock absorbers S, and the front wheels W1 and W4 are installed on a front wheel connecting member 1, and the central wheels W2 and W5 are installed on a central wheel connecting member 2, and the left and right rear wheels W3 and W6 are installed on a rear wheel connecting member 3, so as to be movable vertically freely. The respective wheels W can be rotated individually by a driving means, and the front wheels are installed so as to be capable of rolling freely to the central wheels, and the rear wheels are installed so as to be capable of rolling freely and pitching and yawing freely to the central wheels.