Autumn hiking in Tokyo

Hi, I'm planning to go back to Tokyo for the 2nd time. We were there in spring during our 1st visit.
Can you please recommend a nice walking trail for autumn? Not Nikko please, because the climbing is not doable for some of our members. I have in mind something like the walking trail in Minoo Park / Minoo Falls near Osaka. It's relatively flat, with almost no step climbing.

Takao-san is a nice getaway that overlooks the Kanto. You can take the cable car up and then it's paved with only a few steps up to the temple area. There are several trails back down or you can take the cable car.
http://www.japan-guide.com/e/e3029.html

Shinjuku Park is also nice in the fall and it's relatively large so you can walk a bit.
http://www.japan-guide.com/e/e3034_001.html

Lonely Planet has a book solely dedicated to hikes in Japan, and there are several around the Tokyo area. Try checking that out!

thank you for the replies!