Note: the application/approval is pending for this 129km excursion around the bend of the Columbia River. This is also close to the route of the middle loop in the DRR Loopy 600.
The route starts/ends at the services at the intersection of Leslie and Gage in Richland, WA. The route heads towards the Columbia River, and continues along Columbia River Park. Heading out to Pasco, the route crosses over the Snake River. The bridge offers a choice of a wide shoulder and a bike path. An information control near Wallula provides an opportunity for another view of the Columbia. Heading Right/South on US730 puts one shortly into Oregon - and a good amount of time/distance is spent along the Columbia. A stop at the Tesoro in Umatilla for refuel and refresh is followed by another river crossing, and then a climb up Plymouth Rd and rapid descent down Clodfelter to complete the loop.
About 870m/2850ft of elevation gain/loss.
The route is shown here: