The pass goes from:
Chozenji Temple,
The Observation Hills,
Kakoin Temple,
Daisenji Temple (the grave of Shingen's father, Nobutora)
The grave of Shingen,
Gokoku Shrine,
Takeda Shrine (Shingen's house)
Kofu Historical Pass (古の道) is the actual pass to access the Shingen's House. There are many Shingen related stuff, especially his grave, on this pass. At the observation hill, you can have great view of Kofu area.
Tourist Info.
About 1 hour walking from Kofu Station to Takeda Shrine.
Access
0. at Kofu Station.
1. walk northeast (10 min.)
1 hr. 30 min
New Wave Samurai Movie. 
映画好き集まれ！ 
The pass goes from:
Chozenji Temple,
The Observation Hills,
Kakoin Temple,
Daisenji Temple (the grave of Shingen's father, Nobutora)
The grave of Shingen,
Gokoku Shrine,
Takeda Shrine (Shingen's house)