My original plan of taking a loop ride from my home place in QC - all the way to San Mateo via Batasan-San Mateo Road, Marikina via Marcos Hi-way, UP via Katipunan, then back home via Commonwealth, was aborted due to unpredictable weather condition last Sunday morning (trans: may bagyo!!!). Hehehehehe.
I just made a loop ride instead, based on the above map. Thus also had a route going back to IBP Road from Petron along Batasan-San Mateo Road.
Total distance traveled: 16.95 kms. based on my CycleDroid.
It was nevertheless a good ride on that wet/gloomy/stormy Sunday morning! :-)
Edit: Removed the zoom-able view as it's no longer viewable :(