Impressed by AR map. Did trails come from your data or......?
I started with the trails shown on Open Street Map:
https://www.openstreetmap.org/#map=16/38.5314/-90....I made a few corrections and additions based on GPS tracks Emily sent me.
For local hikes, I've used O', park, GORC [Gateway Off Road Cyclists], and AllTrails maps. Especially at Greensfelder, it's been frustrating that no one map (except yours!) is complete. The park and AllTrails maps do not (yet) have the GORC redesigns of the Fossil Ridge and Beulah trails (NE part of map). GORC has those but intentionally does not include hiking only trails. And our O' maps are not being updated. Great work.