there is nothing in the middle- but you can top off as far south as possible and then drive the furthest north charger on the other end
1421 S Interstate 35 East Service Rd, DeSoto, TX 75115
to
130 Sawdust Rd, Spring, TX 77380
distance between those two points is 212 miles which should be with in the bolt's range - according to google maps.
https://www.google.com/maps/dir/142...8e27fad1b0!2m2!1d-95.4457547!2d30.1276233!3e0
the first charger is an evGo DC Fast charger at the Cracker Barrel (1421 S. Interstate)
the 2nd charger is an evGO DC Fast charger at H-E-B (130 Sawdust Rd)
so you can do it with the Bolt but the trick is to top off to cover the longest segment with no DC Fast Charger - emergency backup L2 chargers are littered on the path so if you're falling a little short of making the DCFast charger you can stop for 1 or 2 hours to gain some buffer - but 212 miles should be doable with the Bolt with some careful driving
this should be a fairly easy segment if you manage your speed - with hold your lead foot and the Bolt will easily make the distance - as you get closer you can probably increase your speed once you're past the 50% mark and it's clear you'll make it to the DC Fast charger.
roundtrip plan would look as follows…
1. top off to full at cracker barrel (30 minute stop probably to fill the battery to 100% since you won't be near empty - if you've just left the house nearly/at-full)
2. drive 212 miles (no dc fast chargers in the middle) to H-E-B
3. stop at H-E-B long enough to get enough range to finish the trip + some buffer.
4. drive around Houston
5. stop at the H-E-B again and fully top off for maximum range (long stop)
6. stop at Cracker Barrel when you get back to Dallas area and get enough range to get home
one way Dallas to Houston would be only steps 1-3…
insert 30-60 minute stops at various L2 chargers if you need just a little extra range to make it to the DC Fast charger.
market street shopping center just north of Houston has 6 Tesla L2 chargers - so they should be be good for a solid 32 amp charge session, but you'd need the adapter for converting a Tesla charge connector to the Bolt's standard J-1772 connection.
9595 Six Pines Dr, Spring TX 77380, United States
or you could rent a gas car for the day and save a lot of time.