Improvised again on the bike today. This strategy paid off as I discovered a network of bike paths that don’t show up on google maps bike view yet. (I submitted a ticket, so hopefully it will be added soon). The park provided some rare hills in otherwise completely flat terrain.
I left at 10, biked for 1 hour 58 minutes, and by the time I got back it was just starting to get uncomfortably warm, even though it was only 80F. I surely would not survive summers here.