My first visit to the Sumner Link Trail took place on July 21, 2015. I rode almost all the trail on a recumbent tricycle. I determined where to park (away from downtown) in a two-stage process: 1) used the City of Sumner's on-line map to identify the general location of the trail and parking lots and 2) followed up with detailed study with Google Earth to form a mental map of how to get there. I chose the access point at the end of 16th Street East.
From the 16th Street access I rode to the north end of the trail (Stewart Street), then south almost to the south end of the trail, and back to 16th. At the north end is a grandiose portal that I liked a lot---all trails should have them---but it seemed out of place abutting a busy street. At the south end I stopped immediately west of the East Main Street bridge. I did not follow the trail farther south (I did not cross the bridge). I saw about a few cyclists, a few walkers, and two dozen geese. The problems I encountered were intruding vegetation (mostly berry vines), many asphalt upheavals, a few cracks in the asphalt, poor signage, and (downtown) route confusion and heavy traffic. A Sumner Planning Department sign at the 24th Street bridge explains the City's plan to replace that pedestrian bridge with a street bridge having a bike lane. The boards of the bridge made a pleasant chirping sound as I rode over them.
Overall trail length is about 5.3 miles and it is completely paved. The north end is at busy Stewart Street (no parking!). The south end (according to the on-line map but not confirmed in person) is the south end of the East Main Avenue bridge that spans the Puyallup River. About 80% (four miles) of the route is on dedicated alignments. The rest is a combination of bike lanes, sidewalks, and traffic lanes on streets. Scenery is varied: farming fields, woods, rivers, warehouses, busy city streets, and a quiet residential neighborhood.
In several places, notably near cottonwoods, the asphalt has bumps created by tree roots but they are well-marked with yellow paint. (Why doesn't the City of Sumner run a grinder over them or remove the roots or build trails better?)
The City's on-line map needs a lot of work. In the area where one needs navigation help the most---downtown---the map is next to worthless, suffering from a lack of detail. The city's website doesn't mention that in the built-up part of the city the trail uses bike lanes, traffic lanes, and sidewalks. Signage along the route is inadequate: the route is poorly marked, especially downtown. It, too, says nothing about the use of streets and sidewalks. Like other trails in the Kent Valley, it suffers from a lack of orienting signs (street names and directions to landmarks or institutions).
As is my practice on trails, I stopped to prune berry vines where they hung or crawled into the right-of-way. I rode a recumbent tricycle (https://www.flickr.com/photos/listorama/collections/72157649934676508/ and https://www.flickr.com/photos/listorama/sets/72157634402978458/. I plan to ride on the trail again.