Forget about the dishes in the sink. Forget about mowing the lawn and posting your blog. Forget about sleep. If you had 24 hours, how far could you ride your bicycle?

More than 400 bicyclists met at the National 24-Hour Challenge last weekend near Grand Rapids, Michigan, to seek the answer to that question. It was the 24th meeting for the event.

Seattle resident Craig Ragsdale, 29, learned he could set the course record by covering 502.6 miles. Just as amazing, 67-year-old Dave Thomsen of Austin, Minnesota, bicycled 403.9 miles. ...   more »