Highway 21 Trunk Tour

Sparta along Highway 21
  • Western terminus: Monroe County, at the junctions of Highways 16, 27 and 71 in downtown Sparta
  • Eastern terminus: Winnebago County, at U.S. 45 in Oshkosh
Distance: 124 miles

Counties along route 21

  • Monroe
  • Adams
  • Waushara
  • Winnebago

STH-021“Bikes To B’Gosh”


WisMap21Quickie Summary: State “Trunk” Highway 21 cuts across much of central Wisconsin, joining Sparta and Fort McCoy with Oshkosh and the Fox Cities. Used as a primary route for traffic, it’s the main street for several key towns and provides access to the Necedah National Wildlife Refuge, as well as both the Wisconsin River (which flows into the Mississippi) and Lake Winnebago (which flows into Green Bay to Lake Michigan and, eventually, the Atlantic Ocean.)

Wisconsin Highway 21 Road Trip

The Drive (West To East): Highway 21 begins in the Bicycling Capital of America, Sparta (pop. 8,648). Sparta is the western host of Fort McCoy, the eastern terminus of the La Crosse River Trail, and the northern terminus of the world-famous Elroy-Sparta Trail.


Sparta’s traditional downtown runs along Highway 21, with shops and bikers lining the street.


Ben Biken, Sparta’s bicyclin’ mascot, looks over Highway 21’s western start. He was manufactured locally by FAST Corp., which we’ll get to in a second.

The town’s enthusiastic support of bicycling extends to street name signs that bear bike symbols. Numerous motels and B&B’s cater to the cycling crowd while downtown establishments offer supplies for your bike and sustenance for your tummy. And speaking of your tummy, the “Ben Biken BBQ Bash”, named as the Official State Barbeque Championship of the State of Wisconsin, takes place every September. Coupled with typical September weather, it might be the best weekend of the year to go check out the area. You can eat brisket and burn it off biking.


The Sparta Depot serves as a trailhead for the La Crosse River and Elroy-Sparta Trails. Here, a group of bikers begin the 32-mile trek toward Elroy.

On top of bikes, Sparta has a number of attractions. Some kids who grow up in Sparta leave for big cities; Deke Slayton left for Earth’s upper atmosphere. The Deke Slayton Memorial Space & Bicycle Museum honors the astronaut, native son, and head of NASA Operations from 1963 to 1972. And that fiberglass hippo, whose mouth you putt golf balls into while playing mini-golf? Chances are, it was made in Sparta at the FAST Corp. (FAST stands for Fiberglass Animals Shapes and Trademarks.) FAST does business all over the world, and few companies like it exist. A drive into their lot yields a sprawling field filled with fiberglass fun: large cows, alligators, elephants that double as childrens’ slides… the list goes on. You may traverse the field and marvel at their creations, as long as you behave and don’t climb on anything. Their lot can be found by following Highway 21 to the northeast edge of town, at the junction with County Highway Q. Look for giant fiberglass things.



Fiberglass animals of all kinds, including this elephant hanging out in the pasture, dot FAST’s lot on the northeast side of Sparta. You are welcome to wander around and check out all the fascinating pieces, just be careful. Watch for wasps, which sometimes make nests inside the displays. Nobody needs somebody getting hurt, stung, or whining off to their lawyer. It is forbidden on the State Trunk Tour.

Northeast out of Sparta, Highway 21 follows the La Crosse River and then beelines it across Fort McCoy, a military reservation in service since 1909. Amidst a beautiful setting with valleys, coulees and hills, about 100,000 members of the military are trained every year.

After a 5-6 mile straightaway. Highway 21 winds past Tunnel City and grazes the north end of Tomah (pop. 8,419), which holds the Monroe County seat. Transportation has long been a hallmark of Tomah; it holds an Amtrak station for the Empire Builder and is where roads going through Wisconsin from Illinois to Minnesota tend to split. Pre-Interstate days, it’s where then-main roads U.S. Highways 12 and 16 split; when the interstates were built in the 1960’s, they decided to split Interstates 90 and 94 here as well. Highway 131 also starts here and makes a trek south through Wisconsin’s Driftless Area, an incredibly beautiful drive. Not coincidentally, lots of hotels, truck stops, warehouses and transport companies are located here. In keeping with the transportation theme, Gasoline Alley comic strip creator Frank King grew up in Tomah.

In addition to transportation, Tomah is known as one of America’s cranberry capitals. The world’s largest cranberry festival is held during late September in nearby Warrens, which also holds the Wisconsin Cranberry Discovery Center. Warrens can be reached by heading north on I-94 to County E, about 8 miles north of Highway 21.

You can see cranberry bogs for yourself along Highway 21 just east of the intersections with U.S. 12 and I-94.

While plying the beautiful farmland and forests that characterize much of the drive from Tomah eastward on Highway 21, you will cross the occasional curious landform, such as Ship Rock, described as “an isolated pinnacle of Cambrian sandstone” by some, and as a “cool rock formation” by others.


Ship Rock, one of the most eastern outposts of Wisconsin’s “Driftless Area” and a fun place to go rock climbing.


Tomah to Oshkosh is coming soon!
West Terminus:
Can connect immediately to: Highway 16, Highway 27Highway 71
Can connect nearby to: I-90, about 2 miles east via Highway 16

East Terminus:
Can connect immediately to: I-41, Highway 76, U.S. Highway 45
Can connect nearby to: Highway 26, about 4 miles southwest; Highway 44, about 3 miles southwest

Events on this Tour

  • EAA AirVenture Oshkosh

    Jul 30, 2017
    EAA AirVenture Logo 2017

    [caption id="attachment_6286" align="alignright" width="225"]EAA AirVenture Oshkosh name in smoke Yep, they can spell out anything at EAA![/caption] EAA AirVenture is the World's Largest Fly-In! What CAN'T you experience here? EAA stands for Experimental Aircraft Association, and it's a total blast. Whether you come to fly or just watch, you experience the world's greatest aviation celebration. Warbirds. Vintage. Homebuilts. Ultralights, even the Blue Angels! Enjoy all kinds of planes, aerobatics, hands-on workshops, and celebrations. AirVenture draws flight enthusiasts from across the globe, briefly turning Oshkosh's Wittman Regional Airport into one of the busiest airports in the world. EAA AirVenture Oskhosh plane on display EAA AirVenture runs a full week, from Monday, July 24 - Sunday, July 30, 2017. Features and attractions include air shows and aircraft neighborhoods where you can check out full assortments of plane types and styles. Plus, there's KidVenture for the young ones, the Aviators Club, Aviation Gateway Park, the Pathways Pavilion, and more. Plenty of activities run all day. But into the evening, concerts, feature films, and special programs take place to keep the fun going. It's a full week of camaraderie. Here's some video to help get you fully into the spirit! Be sure to check out the EAA AirVenture Museum while you're there. Hit I-41, U.S. 45, or Highways 21, 26, 44, 76, or 91 to get you to Oshkosh to take in all the fun of EAA's AirVenture! Ticket prices vary, check this out for all the details.

    EAA AirVenture Address:

    Wittman Regional Airport 525 W. 20th Avenue Oshkosh, WI 54902 Fly over to AirVenture.org for all the info!
  • Sparta Butterfest

    Jun 11, 2017
    Sparta Butterfest 01

    Sparta Butterfest logoSparta holds some notable festivals, and Butterfest is the biggest one of the year. Along with plenty of butter, the festival features numerous events. Among them: the A&P Carnival, one of the Midwest's best. There's also a craft and flea market, a quilt show, softball tournaments, a cornhole bean bag tournament, dance demonstrations, firemen's water fights, a milking contest, stage entertainment, and much more. The Miss Sparta Pageant will be held during the event, one of the sanctioned events where the winner can then compete in Miss Wisconsin. It runs Thursday June 9th through Sunday, June 12th. The Butterfest Parade takes place Sunday at 12:30pm. The whole event takes place at Memorial Park in Sparta. I-90 and Highways 16, 21, 27, and 71 bring you there! (Heck, so does the Elroy-Sparta Trail!) Check out the Sparta Butterfest website for complete schedules and details.

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