The legendary Big Boy No. 4014 is rolling through our backyard this April on a once-in-a-generation cross-country adventure.
If you've never stood next to a locomotive the size of a small building while it lets out a thunderous whistle, consider this your sign — and your invitation.
Union Pacific's legendary Big Boy No. 4014, the largest and most powerful steam locomotive ever built, is making a triumphant return to California this April as part of an epic, coast-to-coast tour celebrating America's 250th birthday. And for anyone in the Stockton area, a short drive north puts you right in the middle of the action.
What Exactly Is Big Boy?
Glad you asked. Back in World War II, Union Pacific needed something seriously powerful to haul freight over the brutal grades of Utah's Wasatch Mountains. The answer? Twenty-five of the most massive steam locomotives ever constructed — nicknamed "Big Boy" because a worker chalked those words on one during assembly, and the name stuck.
After six decades in retirement, only eight of the original 25 were preserved, and of those, just one still runs: Big Boy No. 4014. That makes every single trip this locomotive takes a living piece of American history.
So Where Can I See It?
The good news for Central Valley residents: Big Boy is making five California stops on its westward journey, with the main event happening just up the road in Roseville.
Free Public Display Days in Roseville:
- 📅 April 10 — 1:00–5:00 p.m., 375 Atlantic St.
- 📅 April 11 — 9:00 a.m.–3:00 p.m., 375 Atlantic St.
Yes, completely free. No tickets. No reservations. Just show up and prepare to have your jaw drop.
If you want to catch Big Boy in motion, you can also chase it along its whistle-stop route as it rolls through Oroville, Marysville, and Lincoln on April 9, and Colfax and Truckee on April 12.
It's More Than Just a Train
When Big Boy rolls into Roseville, it's bringing friends. Traveling alongside the locomotive is a fleet of vintage Union Pacific Heritage passenger cars, plus two specially commissioned commemorative locomotives: the No. 1616 Abraham Lincoln and the patriotic No. 1776 — America250, sporting the official emblem of the nation's 250th anniversary celebration.
And here's the history buff bonus: visitors at the Roseville display will get to step inside the Union Pacific Experience Rail Car — a beautifully restored baggage car turned traveling museum — where this year, on special display, is an original Louisiana Purchase Proclamation from 1803. The actual document, published in a Washington newspaper, that announced the land deal that doubled the size of the young United States. Pretty incredible to see up close.
A Tour Built for the Ages
This isn't just a California trip — it's a cross-country odyssey. Big Boy departs on its western leg on March 29, rolling through Wyoming, Utah, Nevada, and California before heading east again. Then, starting May 25, it embarks on the eastern leg, cutting through Nebraska, Iowa, Illinois, Indiana, Ohio, and New York, before pulling into Philadelphia to celebrate the Fourth of July. You know, as one does when you're 99 feet long and weigh over a million pounds.
Tips Before You Go
A quick heads-up for the enthusiastic railfan in all of us: Union Pacific is asking everyone to keep at least 25 feet back from the tracks at all times. No stepping onto the ballast, no climbing on the equipment, and definitely no hopping on the tracks for a photo — no matter how good the shot would look on Instagram.
Speaking of Instagram, you can follow the journey in real time on X at @UP_Steam and share your own photos with #BigBoyHeadsWest and #UP4014.
Roseville is about an hour and 15 minutes from Stockton — an easy and absolutely worthwhile morning or afternoon trip. Pack a lunch, grab the kids (or the grandkids — this is the kind of thing that sticks with people for life), and go see the most famous locomotive on the planet doing what it was built to do.
History doesn't come through your neighborhood every day. This time, it's coming on steam.
For more information, visit up.com.
Photo credit: Union Pacific