Flying past at near 50 miles an hour, the Union Pacific Big Boy heads east in the morning sun as they pass the famous Picacho Peak in the background.

UP 4014 slows as they drop down the short quick grade of the Mohawk pass as they plan to stop at the bottom of the grade for a quick lubrication of all of 4014's parts.

UP 4014 rounds the final leg of an "S" curve just outside of Sentinel, AZ as it continues to race east in the 100 degreees heat!

The Union Pacific 4014 departing the former Southern Pacific Tuscon yard as they head east for Lordsburg, NM on a fine October morning.

After already havig to go into Emergancy, the UP 4014 gets back underway as he continues east toward Tuscon, AZ and a much needed day of rest. Unfortunately the Big Boy will have to go back into e... (more)

The Union Pacific 4014 climbs the massive straight up the grade thru Fenner as he approches the top heading east for New Mexico.

After the dropping down grade from Mescale, the UP 4014 slowly glides toward the Town of Benson as thounsads await his arrival.

The Union Pacific Big Boy, UP 4014, exiting the lower track of the Cienega Creek Preserve before climbing up grade for Mescal, AZ.

With the last minutes of golden hour fast approaching, the UP 4014 pulls out of Tuscon as they prepare to head east for Lordsburg, NM as apart of the Union Pacific Big Boy tour.

Big Boy 4014 has just left Casa Grande for the short tour segment between that city and Tucson. The train is approaching the Toltec Road crossing in Eloy at a good speed. This was another hot day ... (more)

UP 4014 slow rolling downgrade into Benson, AZ

Near sunset, surrounded by one of the largest stands of puzzle-barked ponderosa pines anywhere in the world, a westbound BNSF stack train roars up the east side of the Arizona Divide toward the su... (more)

UP 5711 leading a massive double stack train through Cienega Creek on an early October morning

After switching a small yard, UP's North Line Local departs Benson for Lordsburg, NM.

UP 4014 on its way through Mohawk during The Great Race Across the Southwest