America's longest rail-trail runs 240 miles across Missouri. We're capturing it in street-level 360, starting with 36 miles through the river bluffs at Rocheport, and building the guide to ride the rest: live trail conditions, rain history, trailheads, towns, shuttles, and the Missouri River beside you the whole way.
Terrain360 photographed the trail scene by scene from a bicycle in July 2026: the Rocheport tunnel, the Moniteau and Perche Creek trestles, and the limestone bluffs between Rocheport and Jefferson City. Drag to look around, follow the trail forward, and scout every mile of the captured section.
36 of 240 miles captured so far. Explore the full collection at terrain360.com.
The Katy's crushed limestone drains fast, but heavy rain leaves soft stretches, and high water on the Missouri River can close bottomland sections. We track rain history at fifteen points along all 240 miles, plus the river gauges, and grade every stretch of trail twice an hour.
Hourly precipitation at fifteen towns along the corridor, weighted toward the last 24 hours.
Live USGS gage heights at St. Charles, Hermann, Boonville, and Glasgow, checked against flood stage.
Always check Missouri State Parks advisories for closures before a long ride.
Machens to Clinton by railroad mile marker: where to start, what's in each town, and what the riding feels like on every stretch.
Machens to Marthasville: the busy eastern miles, Defiance, Augusta's vineyards, Boone country.
Marthasville to North Jefferson: Treloar, McKittrick and Hermann, Rhineland, Portland, Mokane.
North Jefferson to Boonville: Hartsburg, Cooper's Landing, the tunnel, the captured 36 miles.
Boonville's bridge, Pilot Grove, Clifton City, and the climb out of the river valley to Sedalia.
The western prairie miles: Sedalia's depot, Green Ridge, Windsor and the Rock Island junction, Calhoun, Clinton.
Amtrak's Missouri River Runner carries bikes. Shuttles cover the rest. Point-to-point is easier than you think.
Plan the logistics →
The Katy shares the Missouri River valley with the river itself, and this is Lewis and Clark country: the expedition worked upstream through this reach in June 1804, and the trail is an official segment of the Lewis and Clark National Historic Trail. Terrain360 has captured the river by boat too, so you can scout Cooper's Landing from the water or the tunnel bluffs from the saddle.