China is a jogger's worst nightmare, unless of course you are in the countryside.

Google your question.  Also try the IAAF site for leads. A few other things to ponder:

Don't see too many joggers in my area, although there are some - usually middle-aged men in track suits out for a morning run.

I wouldn't jog here without a carbon filter face mask and since I don't like wearing masks, I don't jog. (Well, I'm lazy, too.) The next best thing is a treadmill at a gym.

Virtually every public school has an outdoor running track, PE classes & a "sports day" at least once a year with running, throwing and jumping events.

The Olympic sport of athletics (i.e. track and field) is followed by die-hard fans only and admirers of Chinese runners such as Liu Xiang, gold medallist and world champion, now injured & out of commission.

I limit my running to a treadmill or a local middle school's running track.  All my other athletic endeavors are likewise kept away from public roads (go to the gym, climb the mountain, etc).  The air pollution is not too terrible in my little city, so that's not a factor for me.  I've never seen anyone running (for leisure purposes anyways) along public roads in China.  You might see a few cyclists here and there donning their colorful spandex outfits, but even that's a crapshoot with Chinese motorists sharing....or not sharing the road.