Totally agree on this. Whole riverside trails all nice (during non-weekend hours, of course). Can do a round-trip 70+km ride from around NTNU to Tamsui and back; can take a leg of the river bike path to the back end (southwest) of Cheng-Chi University in Muzha and climb back rarely used roads (by cars) to get up to the Makong tea area. And yes, can get out to Sanxia in relative peace and quiet.
Not to mention you can rent bikes in many places, or fill up your water bottles for free at those bike rentals stations.
Wow, a Taiwan cobra. Must’ve been trying to sun himself.