In the article about Kohechi in "Ritei Yamato Chomonki", expressions like 'the road 1 shaku (about 30.3 centimeters) in width', 'dangerous spot', 'horses and cattle cannot go through the road' appear frequently, therefore it is known that at that time Kohechi was just a steep slope on a mountain or some animal trail that was very difficult for people to travel.
『里程大和著聞記』の記述には「道幅一尺」「難所」「牛馬常通不申」といった表現が繰り返し見られ、険しい峰道か峠道、あるいは獣道程度の道でしかなく、困難な道であったことが分かる。