Tai Tam is really hilly. Below is my suggestion :
Start 英皇道 (Quarry Bay Station) - 柏架山道 - 金督馳馬徑 - 畢拉山 -黃泥涌道 - 大潭水塘 - 大風坳 - 英皇道 (End)
I need 2 hours to complete one lap.
I am OK for Saturaday or Sunday morning! But the problem is no place for Chings to take shower after run.
For the path I suggested, you can either run or walk, it is really hill especially from dawn to top.