The drive from Johnson City to St. Louis covers about 850 kilometers and takes roughly 9 hours. You will head west on I-40, then transition to I-64 through Kentucky and Southern Illinois. This route offers a mix of mountain scenery and flat Midwestern plains. It is a manageable drive for a single day, passing through Nashville, which is a great spot for a lunch break.
Total Distance: Driving distance 850 km; Air distance 700 km.
Nashville traffic can be heavy; plan your departure to avoid rush hour.
Spring and Fall for mild weather and outdoor activities.