Do not be perverse. Some temples are comparatively accessible. But many of them are located in or atop mountains or in remote villages, as Kukai chose such places for his ascetic practices. Until only about 20 years ago, some temples were really hard to reach, though nowadays newly-built roads and ropeways have made them less forbidding. The most authentic pilgrims go on foot all the way, spending about two months, because walking is closest to following in the Daishi's footsteps.
Some young people go by bicycle or motorbike.
Some family groups drive their cars, while others hire a taxi. Nowadays many people like to join the conducted bus tours. People usually go in sportswear or everyday clothes, in sneakers and sun visors. Of all the equipment, the most important is the staff. It is not just for practical use when one hikes along rugged paths in the mountains, but it is a holy symbol of the Daishi himself.