Jobs easily accessible by bike, so speak, in Jacksonville:
https://api.mapbox.com/styles/v1/ctswebrequest/cjy7d88n12gi91cl5p285gaqi.html?fresh=true&title=true&access_token=pk.eyJ1IjoiY3Rzd2VicmVxdWVzdCIsImEiOiJTb19VUHM0In0.muGg6tMDG4NOGrV4qQQ8yw#11.31/30.3044/-81.6807
Index of top 50 US metros
http://access.umn.edu/research/america/biking/2017/maps/index.html
What they're really showing
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The maps show 30-minute accessibility values at the Census block level. Lighter colors indicate few jobs can be reached within 30 minutes; darker colors indicate more jobs can be reached within 30 minutes. At the highest levels, more than 100,000 jobs are accessible by bike within 30 minutes.
"
I could bike to work inside 20 minutes. A ramble just Southwest of Riverside/ Avondale.
Treacherous. Skip it.
Although I have made the run via boat; Kayak and small outboard powered vessel.
I know so many that have moved from here to places more effectively positioned for Bike Use.
Jacksonville will catch up. Easy. A perfect Cycling Place. Eventually.