Maps from Google Maps and all images from Street View.
207.6 km - 136 km = 71.6 km (banked)
Note: Now that I am in Italy, Google Maps no longer provides bicycle routes, so I will mostly switch to walking routes, which are given and do not involve unrealistically riding on major motorways.
1. Via S. Vicenzo, Genoa
2. SS45, Genoa
3. Via Piacenza, Genoa
4. Via di Pino, outside Genoa
5. Via Molinetti, Bussaletta
6. Via Tomassi Giuseppi
7. Via Fieschi, Casella
8. Localita Lesi
9. Localita Montemaggio, Montemaggio
10. SP10, Sorrivi
11. SP9
12. SP9, Vobbia
13. SP8
14. SP145
15. SP145, Rochetta Ligure
16. SP115, Borgo Adomo
17. Anonymous Lombardy track
18 Mulino Lentino
19. Localita Valle di Fabbiano
20. SP11
21. Via Emilia Pavese, San Nicolò a Trebbia
22. Via Taverna Giuseppe, Piacenza
23. Ostello Papa Giovanni XXIII, my virtual stay in Piacenza
24. Basilica di Santa Maria di Campagna, Piacenza
25. The Mure Clementine, Piacenza