Update: My friend informs me that 17 February is the "Takbo para sa Kalikasan" (sounds like that) at the Quirino Grandstand area. The week after that (sunday after) is the Pasig River Marathon sa may Fort. Both should have 3k,5k and 10k courses.

Will let you know if I find the contact details.

I will move up to the 5k run since bitin na sa akin ang 3k. My friends who run the 10k will be exploring half-marathons at 26k ata. Am not sure of exact distance put isn't a full marathon 41-42k?

Yes lots of children join. Should be better exercise than a Wii. Also they have boundless energy. Plus bonding pa kayo.