From Ragbrai.com:
RAGBRAI XVIII
July 22-28, 1990
RAGBRAI XVIII, July 22-28, 1990, was laid out as the fourth longest at 495 miles. It began in Sioux Center in northwest Iowa for the first time. Sunday morning dawned clear and cool. It was a perfect day, with the high in the low 80s and a tailwind. The first three days from Sioux Center to Spencer and on to Algona and Hampton were among the nicest in RAGBRAI history. (It was a second time for both Spencer and Algona, the first for Hampton.) But Wednesday brought the riders a 20-plus MPH headwind, making the 86-mile day from Hampton to Oelwein one of the toughest ever.
Those who rode the 16-mile Century Loop that day appreciated the short tailwind stretches. The headwind continued Thursday between Oelwein and Cedar Rapids (both first-time communities). On top of the wind, it began raining about mid-afternoon and continued most of the night, resulting in the washout of most of Cedar Rapids’ wonderful plans.
The wind was not as strong Friday when the riders left Cedar Rapids, and it was a pretty ride through the Lake McBride area. Iowa City welcomed the riders with open arms as they passed through on their way to Washington (RAGBRAI’s second time there). Saturday dawned with more rain, which continued until about 11 a.m. The ending reception in Burlington (the third time), where the riders were given the option of riding down famous ‘ Snake Alley,’ was again outstanding. The 1990 ride probably took the title of ‘toughest’ away from RAGBRAI XVII the previous year.