Sirena Dufault is nearing the end of a rigorous, inspiring personal quest. On May 23rd she’ll arrive here for a special evening reception at the South Rim of the Grand Canyon as she nears completion of a long hike and fund raising journey from the U.S. Mexico border to Arizona’s border with Utah. Ms. Dufault, 40, began her AZT Trek on March 14 and will finish on May 31 having hiked the entire Arizona Trail, more than 800 miles, mostly alone, from south to north.