A disused freight line has become the longest rail-trail in the United States, and it just happens to pass some of the best fall colour in the Midwest. Missouri's Katy Trail runs 239 miles of crushed limestone from Clinton in the west to Machens, just north of St. Louis, following the old Missouri-Kansas-Texas Railroad — the "K-T" — which abandoned the route in the 1980s after flood damage. The first section opened to riders in 1990, and the trail now pulls around 400,000 visitors a year and holds a spot in the Rail-Trail Hall of Fame, one of only 30 inductees.
The route reads like a greatest-hits album of Midwestern scenery. From Boonville to Machens, 165 miles of the trail shadow the Missouri River along the same corridor Lewis and Clark scouted in the early 1800s — a stretch now protected as part of the Lewis & Clark National Historic Trail. The most photographed segment sits between Rocheport and McBain: towering limestone bluffs, wide river views and the Rocheport Tunnel, the only tunnel on the entire trail. Farther east, the Portland-to-Treloar stretch adds more bluffs, leafy canopy and a detour to the Grand Bluffs Conservation Area, where Canada geese nest.
What makes the Katy Trail genuinely rideable for almost anyone is its infrastructure. There are 26 trailheads, so you can sample a few miles or commit to a week-long tour. Roughly 30 wineries line or near the route, and restored train depots and historic downtowns break up the miles — Boonville with its Katy Bridge, Rocheport with its galleries and eateries, and St. Charles near the eastern end with a historic district and the Lewis & Clark Museum.
Timing matters. Summers can be brutal — 90-degree heat, humidity, bugs and thunderstorms — while winter brings ice and closed facilities. The sweet spot runs from early September to mid-October: cooler air, fewer insects and, by mid-October, peak hardwood colour. One caveat for leaf-peepers on two wheels: fallen leaves can hide bumps and make the limestone surface slick, so slow down through the pretty bits.
Logistics are refreshingly easy. Amtrak runs from St. Louis to several trail towns including Washington, Hermann, Jefferson City and Sedalia, though most riders drive. Overnight options span trailside campgrounds, hostels, B&Bs and rentals, and if you'd rather not plan at all, local outfitters will handle shuttles, luggage transfers, bike rentals and full inclusive tours. Pair the trip with a day or two in St. Louis, one of the more affordable big cities in the region.
Whether you're a touring cyclist chasing a bucket-list ride or a casual rider after a scenic afternoon with a winery stop, the Katy Trail scales to your ambition — and autumn is when it shows off.
