Goku
Start is the lovely Mizuwakasu Shrine

Note quite sure of the route here. But turning at this point gets the distances right later on

Half marathon distance (approx)

Pretty much flat from now until the airport

30 km

Full marathon (and the last hill starts)

Oki Airport

2km to go

Saigo

1km to go

The end! finally

Okinoshima Ultramarathon (50km course)