Update September 17, 2019:  The Sylvan Bike Trail System is closed immediately and will remain closed until further notice due to saturated ground and wet and muddy trail conditions. The trail system is just not drying out after last weeks rain events and with the additional rain forecast for later this week, officials have decided to close the trails.

Sylvan Hill Park Bike Trails:

General Information:  This trail system opened for the season on May 25, 2019.  This loop trail system has approximately three miles of trails with four downhill options for riders with different skill levels.  This bike park includes a pump track, a small skills area to help riders hone their abilities and the large loop system circling the park.

To access the trail system riders should park in the trailhead parking lot at 3298 Coates Lane, Wausau.  This lot is located at the top of Sylvan Hill in the very southeast corner of the property.

Some of the trails require advanced riding and jumping skills.  There are signs explaining difficulty levels, and 'filter' features at the beginning of the more difficult runs.  If a rider can traverse the filter jumps, they should feel comfortable riding the rest of that run.

Sylvan Hill Park is multi-use and includes a number of hiking trails.  Bikers please be courteous and yield to all pedestrians.  At this time there is a donation box at the trailhead but no required fee; there will likely be a fee required in the future.

Click here for winter snow bike opportunities!

Nine Mile County Forest Recreation Area:    

General Information:All Nine Mile bike trails will close for the season on Monday, October 15, 2018.  Located just 15 minutes west of Wausau, this developed recreation area offers miles of off-road mountain biking opportunities.  There are 13.45 miles of single-track trails and 20 miles of 12' wide trails (the cross-country ski trails) ranging from beginner to expert level.  This area hosts several major mountain bike races each year including the Wausau 24 and the Wausau Classic.  The bike fee area includes all trails at Nine Mile Forest; single-track, cross-country ski, and snowmobile trails.

The use of electric mountain bikes (eMTB) falls under the definition of a self-propelled motor bicycle and is prohibited by ordinance at Nine Mile and all other County Forest lands.

In general, the Nine Mile Bike trails opens for the season when the trail system has adequately dried up.  Typically this is May 1 - 15.  Each year this website will be updated when officials have determined when the trails will open.  After the trail system opens, they will open at noon daily through the end of the spring Turkey hunting season which runs well into May.  Each year the dates change slightly.

Directions:  8904 Red Bud Road,  From US 51/I-39 take Exit 188 and drive west on County Road N 3.5 mile to south on Red Bud Road 1.25 miles to the chalet parking lot on the west side of the road.  When approaching from the west take County Road N east to Red Bud Road (approximately 9 miles east of State Highway 107).

Trail Fees:  12 years and older $4 Daily or $25 Annual Sticker;  FREE 11 years and younger.  There are several self-registration stations throughout Nine Mile including the chalet parking lot on Red Bud Road, the Hollywood Road parking lot located on the west side of the property, and the Fawn Road parking lot located on the southeast side of the property.  The bike fee area includes all trails at Nine Mile Forest; single-track, cross-country ski, and snowmobile trails.  Annual passes may also be purchased at the Park Administrative Office, 212 River Drive, Suite 2, Wausau, M-F, 8 a.m. to 4:30 p.m.

Season:  Trails open between May 1 and May 15 depending on trail conditions and remain open through October 15 annually.  If the trails are open in May the first three weeks they open daily at noon to allow for spring turkey hunters to have a quality hunt.  The dates change slightly each year.  Trails close annually October 15 to allow for small game and deer hunting activities.

Big Eau Pleine Park:

For more information, please contact the Wausau and Marathon County Park, Recreation and Forestry Department at 715-261-1550.  Or you can visit our web sites at www.co.marathon.wi.us/parks.asp or www.ci.wausau.wi.us/parks.asp.

County ordinance prohibits hunting in any county park during any hunting season.

Please enjoy these trails and use discretion when riding if you encounter any wet areas so as to minimize any damage to the trail system.  Thank you

Located just 15 minutes southwest of Mosinee this large park offers 10 miles of trails shared with hikers, bikers, and horses.  A large parking lot is available across from the A-Frame Park Managers office and is the trailhead heading east and west from that point. All of the trails are granite based. Frequent deer and other wildlife sightings can be made while on these trails that meander through hardwoods and with periodic views of the Big Eau Pleine Flowage.

Directions:  3301 Eau Pleine Park Road, Mosinee.  From Wausau take US 51/I39 south 12 miles to STH 153, STH 153 west 8 miles to Eau Pleine Park Road, Eau Pleine Park Road south 3 1/2 miles to park entrance. The park is approximately 4 miles west of Moon.

Trail Fees:  FREE

Season:  Horse Trails are open to the public annually on May 1 unless wet trail conditions warrent a later start.  Horse Trails are open through October 31 annually.  Bike Trails are allowed on the trails annually on May 1 unless wet trail conditions warrent a later start.  Bike Trails remain open through the fall and winter (snowbiking is allowed throughout the winter season) and close on March 15, or when the spring thaw arrives, whichever comes first.  CWOCC will be grooming the snow bike trails thoughout the season upon each 5 inch snowfall.  The Park Department may post trails closed signs as applicable throughout the year.

Mountain-Bay State Park Trail:

The Friends of the Mountain-Bay Trail is looking for volunteers to serve on their board in leadership or support staff positions.  If you are interested please contact Jamie Polley, Director of the Parks, Recreation and Forestry Department at jamie.polley@co.marathon.wi.us or call 715.261.1550.

The Mountain-Bay Trail is a Wisconsin State Park Trail that occupies the former Chicago and Northwestern Railroad right-of-way between Wausau and Green Bay.  The entire 83.4-mile trail extends from Marathon County through Shawano County and into Brown County ending just west of Green Bay in the Village of Howard.  The trail travels through a variety of agricultural, forest, and wetland landscapes that exhibit many of the glacial landforms in Wisconsin. The trail links with the Ice Age National Recreation Trail in Marathon County, the Wiouwash Trail in Shawano County, and a network of trails in Brown County.

Access points include the Weston, Ringle, Marathon County Landfill and Norrie trailheads each of which have parking lots and self-registration stations for trail passes.  The self-registration stations have envelopes for you to complete and pay the $5 daily fee at any time.  Marathon County trail tread is crushed, compacted limestone.

Directions (Google Map) to Weston Trailhead:  5501 Municipal Street.  From Wausau take STH 29 east 3 miles to Camp Phillips Road, Exit 173.  North on Camp Phillips Road 1/2 mile to CTH JJ.  East on JJ  1 mile to Municipal Street.  North on Municipal Street to the Weston Trailhead Parking Lot on the right.  The weston trailhead building will not be open in 2018. 

Trail Fees:

  • State trail fees apply for this state park trail.
  • Bicyclists 16 years and older $5 Daily Fee or $25 Annual State Park Trail Pass.
  • Those of you who purchase DNR State Bike Trail Annual Passes that are good for all State bike trails (including the Mountain-Bay State Park Trail) may be interested to know that if you purchase the DNR State Bike Trail Annual Pass from the Marathon County Parks, Recreation and Forestry Dept., 70% of the fee stays right here and is used only on Mountain-Bay maintenance. We receive no portion of DNR State Bike Trail Annual Pass revenues sold elsewhere, including the DNR office in Rib Mountain. Buy from us and help support your local State Bike Trail!
  • $5 daily pass, self-registation envelopes are available anytime at the Weston, Marathon County Landfill, Norrie, and Hatley trailheads.
  • Annual passes are available per the below:
Annual Trail Pass Sales Locations Address 2019 Trail Passes are Available
Park Administrative Office 212 River Drive, Suite 2, Wausau YES
Builer's Cycle and Fitness 215 S. 3rd Avenue, Wausau YES
Rib Mountain Cycles 4001 Rib Mountain Drive, Wausau YES
Trek Store of Wausau 2601 Stewart Avenue, Wausau YES
Weston Municipal Center 5500 Schofield Avenue, Weston YES

Popular Links:

Bike Fixtation Stations are located at the following locations:
River Park in Rothschild
Nine Mile County Forest Recreation Area
Mountain-Bay Weston Trailhead
Aspirus YMCA Weston



Winter Snow Bike Trails:

Big Eau Pleine Park Snow Bike Trail System:  Big Eau Pleine Park is now home to a 10 mile groomed snow bike trail system.  This trail system is designated for bikes with tire width of 3.7 inches or greater.  The Central Wisconsin Offroad Cycling Coalition (CWOCC) partnered with the Parks, Recreation, and Forestry Department to make this opportunity available.  A large parking lot is available across from the A-Frame Park Managers office and is the trailhead with trails heading east and west from that point.  CWOCC will be grooming the trails after each 5" snowfall.  Periodic grooming updates for Big Eau Pleine trails will be posted on the CWOCC facebook page.  Some of the horse trails are groomed for snow bike so be aware of this while you are on this multi-use trail.

Snow Bike Rider
  • Groomed trails
  • Helmets required
  • Yield to pedestrians
  • Donations accepted for trail maintenance
  • Trailhead parking available

Trail Fees:  Donations are accepted at the trailhead and help offset trail maintenance costs.

Season:  December 1 to March 15, weather permitting.

There are also summer bike trails and winter snow bike trails on the Marathon County Solid Waste property in Ringle, WI.  See the CWOCC website/facebook page above for opening/closing dates for this trail system.