Crossing Satta Pass through Old Tokaido route is also popular among cyclists. Some even cross major Tokaido passes such as Satta, Utsunoya and Sayo-no-Nakayama in a single day. When you are coming from Okitsu, you can go close to the Satta Pass by riding on the paved road. After the parking space with toilet near the graveyard, you need to carry the bike just as the man on the photo #1 does. The segment of narrow steep path may not be so long, after a few minutes walk the trail become flat enough to ride on a bike. But you need to be a bit cautious on the hikers on the trail or resting along the trail. After getting the eastern edge of the pass with parking space there is a three-way divide. To get to Yui, you choose the downhill road along the citrus orchard.
If carrying the bike up to the pass is hard for you, there is a paved road west of the trail which also leads to the Yui side of the Satta Pass parking space. Many cyclists particularly those from Yui choose this paved road.
Though I have not tried myself, Utsunoya Pass seems to be a popular place for cyclists because they can test their skill with various types of trails ranging from paved to narrow path.
Route 1 under Heisei and Showa tunnels: The easiest but the least popular.
Prefectural Road 208 passing Taisho tunnel: most cyclists use this road.
The reason Prefectural road is chosen seems to be that it has less automobiles and most of cyclists head for another popular destinations such as Horaibashi Bridge in Shimada in the west or Nihondaira Upland in the east so they cannot take so much time passing Utsunoya.
Meiji Tunnel: It is also popular among cyclists. After passing the tunnel from Shizuoka they often go down to join Prefectural Road 208 and enjoy downhill cycling.
Tokaido Utsunoya Pass Trail: Most of the Okabe side of the trail is even passable for automobiles(the road is open for vehicles only for tunnel management) so cycling is OK and may be a bit challenging.
Tsutano Hosomichi: It is entirely mountain trail and may be very difficult even for experienced cyclists. You may have to carry the bike up to the pass and down to narrow trail.
I found an interesting video clip(in Japanese) passing Meiji Tunnel to Mariko area.
Abe Riverside area has been used for various sports and outfield activities such as baseball, soccer, biking, walking, jogging and fishing. Abe sports park, 10 minutes walk from the tokaido trail is one of such sports and outdoor parks. The park also has a great view just as described in Hiroshige's Tokaido woodblock painting work" Fuchu".