Toledo-Winlock Ed Carlson Memorial Field, Toledo, WA (TDO)
Correctly identified first by Bill Sayre.
Holy Toledo, that beautiful, long, wide, freshly-repaved runway is in great shape! Toledo sits just east of I-5 about half-way between Seattle and Portland. It's a pretty quiet place these days but has an active skydiving operation and makes an easy stop (with 24 hour fuel) along the I-5 corridor.