By Joseph Bien-Kahn Ian Mackay was paralyzed in a bike accident, but he’s found happiness in experiencing old loves—like getting back on the road—in new ways. Long into the year’s shortest night, muted light plays tricks on heavy eyes, and repetition can deceive a tired mind. Six times this group has completed the 12.29-mile counterclockwise loop: always south alongside the Willamette River, east past the pumpkin patch, north along the Columbia River before curling west near Sturgeon Lake and running south by the dairy farm and the cabbage patch, across the Gilbert River, and then, finally, ba…