Frank from Springfield, MO on 9/21/2018 8:31:53 AM:
I rode from Marthasville to Page Bridge (35 miles), then to the Amtrak station in Kirkwood (23 miles) (58 miles total) on Monday, September 17, 2018, mostly following the directions from another post on this site. It was hot and I did not find water at the trailheads after Dutzow (3.7 Miles from Marthasville) until the Tremayne Shelter (below). There were few gas stations or convenience stores along the route through St. Louis to buy a cold drink, so plan accordingly. I commute on streets daily, and did not find the route/traffic uncomfortable.
When the Katy reached the Page Street Bridge underpass take the series of switchbacks on the left/north that comes up on the east side of the Bridge, then take the separate bike path on the Bridge's east side. After crossing the Bridge the path goes under the Bridge then continues south along the west side of Page to a bike path bridge across Maryland Heights, Expy. Here I met a very nice lady cyclist who guided me on the Fee Fee Greenway - https://greatriversgreenway.org/greenway/fee-fee-greenway/ - opened last June, that avoided some traffic and hills that you meet if you proceed immediately on Marine from the Tremayne Shelter (below). After going across Creve Coeur Mill Rd. the path splits, right going south (out of the way) to the lake restaurant (not open until 11am), and the left going under Page and left/north at the path fork around Creve Coeur Lake (right/south loops back to the lake restaurant). Shortly after going around the north end of the lake and turning back south you reach the Tremayne Shelter with water and restrooms, then the path continues across Marine Ave. to the Fee Fee Greenway, proceeding easterly including a couple of significant hills (compared to the Katy, but apparently less than going on directly to Marine). at the path end at Maryland Heights Community Center we crossed the street and went through a housing subdivision (I don't have directions as I was just following) to Bennington Pl., turning left/south on Bennington across Dorsett Rd, (Bennington name changes to McKelvey Rd.), proceeding south to Marine. At that point I proceeded on the directions from the other post:
left/SE on Marine Ave.
Straight on Westport Plaza Dr. (continuation of Marine, SE and turning to south)
Straight (south) on Craig Rd. (continuation of Westport after crossing Lackland Rd.)
Left/east on Olive Blvd.
Right/south on Mosley Rd.
Left/east on Ladue Rd.
Right/south on Spoede Rd.
Right/west on Clayton Rd.
Left/south on Geyer Rd.
Left/east on Argonne Rd. to Amtrak station at 110 W Argonne Dr, Kirkwood, MO