I will inform you estimated time to complere shimanami kaido by bike.

Shimanami Kaidou is 6 islands.

Onomichi → Mukoujima island - Innoshima island - Ikuchijima island - Omishima island - Hkatajima island - Oshima  island ← Imabari.

From Onomichi.
People with confidence in physical power is 4~5 hours.
Guest is
average 6.5 hours.  Distance equal to approx 63 km, from Onomichi.

The Shimanami Kaido repeats going up and down bridges along the way.

From Imabari.
People with confidence in physical power is 2 hours.  Guest is average 3~4 hours.
Newbie and child is about 4 and a half hours. Distance equal to approx 20 km, from Imabari.

The Kurijima Kaikyo Bridge is the longest bridge (4.105m) on the Shimanami Kaido.

The Miyakubo Pass, which enters Oshima and passes through the middle of the island, is said to be the most painful and long climb on the Shimanami Kaido.

Precautions for the summer season.

Don't forget to stay hydrated and take breaks.

Especially in the summer, when cycling, the temperature may feel like 40 degrees Celsius or more due to the reflected heat of the road. If you are traveling with children or are not confident in your physical strength, we recommend the Intermediate Shortcut Course. 

Check-in time 15:00~19:00 (If you are late, please be sure to contact us)

Please note that after sunset, there are few streetlights.

Please do not make a mistake!! 

Oshima Island  and Omishima Island is Very similar.
Guesthouse Yadokari is located in the Oshima island.

Check-in time 3:00 pm ~ by 19:00. Please come here by 19:00.

If there is no contact until 19 o'clock on the day, it will be considered as cancellation.

Please understand.

There are only few streetlights in this area, please take care in coming.

Popular sightseeing spots among foreign visitors

 Kousanji

https://goo.gl/maps/rTt8kiTLJMz

Most temples in Japan are funded by many people, but this temple was funded by one man. Not just a temple - the caves and Italian-style buildings were all funded by him!

Okunojima island, which is also called Rabbit Island

https://goo.gl/maps/mfHQUCDkV1w

There are more than 700 friendly rabbits living wild, all over the island.

Oyamazumi Shrine (National Treasure) 

https://goo.gl/maps/GNqLoEzazM82

It is said that your dream will come true if you can run three times around the big, 2600 year old tree.

Kirou mountain look out- observatory

https://goo.gl/maps/1mhDCqfgDk52

The view from this look out is really great!

It is ranked 2nd in the best scenery in Japan.

At 307.8m, it's a tough climb but do your best! 

Murakami pirate museum

https://goo.gl/maps/M6oKmAk6AaF2

You can learn about the "pirates" and you can also dress up in Japanese-style armor!