Carl Henn Millennium Trail


Trails Matter More Than Ever

During these extraordinary times, more people are counting on trails to stay active and healthy. Your support keeps TrailLink resources FREE to help find a trail near you!

Carl Henn Millennium Trail Facts

States: Maryland
Counties: Montgomery
Length: 10.7 miles
Trail end points: Wootton Parkway and Falls Road and Wootton Parkway and Falls Road
Trail surfaces: Asphalt, Concrete
Trail category: Greenway/Non-RT
ID: 7684007
Trail activities: Bike, Inline Skating, Wheelchair Accessible, Walking

With Unlimited:

  • Export to My Trail Guide
  • Create Guidebook
  • Download GPX
  • Download Offline Maps
  • Print Friendly Map
Upgrade Now

Carl Henn Millennium Trail Description

The Carl Henn Millennium Trail is Rockville's bicycle beltway. The 10-mile trail creates a circle around the city, providing a safe and convenient way to get around town or enjoy a leisurely stroll.

The trail was constructed in 2000 and was named after the excitement and promise held in the new millennium. The trail was renamed in 2011 after Rockville resident Carl Henn, a tireless advocate for sustainability and active transportation, who passed away in 2010.

Parking and Trail Access

The Carl Henn Millennium Trail is accessible through a variety of routes as it is a circle around Rockville. Parking to access the trail can be found at a number of local streets and public parking lots, including the Thomas Farm Community Center (700 Fallsgrove Drive), the Rockville Senior Center (1150 Carnation Drive), and David Scull Park (1133 1st Street), amongst others.

Carl Henn Millennium Trail Reviews

Trail conditions are great, but the route signage is erratic and confusing. The paved trail is broken up way too much by traffic intersections, some of which are really dangerous. Wouldn't take time to ride it again.

Unfortunately, a person can't give ratings for different parts of a trail. The portion that is west of Rt. 355 (Frederick Road/Hungerford Drive) is quite nice. Especially the portions through the Fallsgrove and Rockshire communities. However, if you value your life, stay away from the portion along East Gude Drive. It is narrow and right next to a high speed road with extremely heavy truck traffic. The trail is strewn with broken glass and broken parts of automobiles. Since you are riding through an industrial park at this point, there are a lot of intersections with trucks and cars turning in front of you. It is best to stay away from this part.

A small 10 mile loop around Rockville on an Urban trail.


If you live in Rockville this is a considerable asset. If you are looking for a beautiful, smooth trail to enjoy everything cycling can be, look somewhere else. Nice trail head with parking and the park trails are short but top notch. Once you leave the park you are essentially getting an extra wide sidewalk through areas of heavy traffic. There are considerable traffic crossings and blind drive ways that make this a very stop and go trail. There isn't much in the way of scenery once you leave the park. No bike shops on the trail or cafe stops. No breweries, boo. It seem like a good local resource, don't go out of your way for this.

I did not one, but two laps of the Carl Henn Millennium Trail over the July 4th weekend. The true start/finish line is located at the Thomas Farm Community center, with the path outside and to the left of the main doors of the building. Most of the course takes place by well-lit roadways and neighborhoods; however use common sense and caution when running during night-time hours. Some of the heavier-wooded areas have some wildlife, to include deer, squirrels and different specie of birds (saw some cardinals and maybe a blue jay/other blue bird?).

The path was recently remarked in increments of 0.5 miles. At the start, if your first marker says 10.5 mi, you're going in the opposite direction. It's not so much a right/wrong thing, but be prepared for a more challenging run/ride. The course is well marked and plenty of signage to mark the trail. The Millennium trail is so easy to follow by car that I was able to mark the course for water stops.

There are some businesses along the first half of the trail that will let you frequent their restrooms (as long as you ask permission and probably buy a bottle of water, at least). The last restroom opportunity is at the 7-11 located at the 5.0 mark on Wooton Parkway. After that point, no more official potty stops until you get back to the Farm Center.

The trail is a good series of hills and valleys. Most significant are the hills from the 0.5 marker to the 2.0 marker of West Gude, then the 7.5 to the 9.0 on Wooton Parkway, then the last mile plus heading back to the Farm Center. I survived two laps of the Henn Millennium trail and found it to be an excellent addition to my marathon training regiment.

I ran this course on an early Sunday morning around sunrise; not many bikers or runners until about 8:30 a.m.

A sunny Saturday brought us to this good urban ride. Fairly well marked it goes through some great neighborhoods with plenty of food and bathroom stops.

Definitely take the clockwise route, seems to have more 'downhills' and less climbing.

Recommended for kids 12 and up.

Took my 12 year old - most of it is separated from the road, but you should be comfortable with some amount of close vehicular traffic.

I just rode the Carl Henn on my Terra Trike. The trail was not clearly marked at the location I parked the car so I started in the wrong direction. Fortunately my knowledge of the area allowed me to circle back and pick up the trail at another location. The main trail follows along heavily traveled streets and while the riding area is good there are many cross traffic requirements. With the exception of a very short portion of the trail which transits a wooded area the trail parallels the main street which make it something of an uninteresting ride. I also found that on older parts the tree roots have pushed through the hardstand and make for a less than comfortable ride. Overall a good but not great 10 miler.

I enjoyed this because it was a loop. 10.7 miles was all I had time for, so perfect. Some of the trail runs along busy Gude Drive, basically on the sidewalk, but once you get to the end of Gude, you're on to nicer conditions. The area along Wooten and through Fallsgrove was most enjoyable. The parking information was a bonus, because GOOGLE told me to go somewhere along Gude Drive to find one of the entry points. True, that point is along Gude, but you can't get to the parking lot unless you enter from Nelson, etc. All this time, this little path was right here and I never knew it! Thanks RTTC

I only did 7 of the 10 miles today due to the fact that was pushing 100 pounds ( 2 kids and a double stroller). The trail is awesome, it's plenty wide, smooth and very challenging due to the changes in elevation. I highly recommend it!

I did this trail for the third time yesterday and will do it more since I moved to King Farm a few months ago. It is 10.5 miles with some modest hills and lots of places to park and start your trip. The city of Rockville puts out a wonderful map 240-314-8600 Dept. of Parks and Recreation. The trail crosses a number of major roads but there are buttons to push to give you a safe crossing. The map is useful to see the other trails and parks that connect with the Millennium Trail. Original name of Carl Henn Trail

Trail Events

This trail does not have any events yet.
Be the first to add one!

Add an Event

Events nearby

organizer logo
Indian Head Rail Trail
White Plains, MD

The Center for Abused Persons CAP would like to invite everyone for our first annual Steps to End Violence Everywhere (S.T.E.V.E.) 5K race on April...

#5k #race #walk
Sat Apr 25 2020

Nearby Trails

Rock Creek Trail (MD)

Maryland - 14 miles

Rock Creek Trail forms a winding path, at times narrow, through the urban greenway of Rock Creek Regional Park. The trail extends between Needwood...

Bethesda Trolley Trail

Maryland - 4 miles

The Bethesda Trolley Trail—also known as the North Bethesda Trail—is a 4-mile path linking Bethesda and North Bethesda, primarily by bridging two...

Intercounty Connector Trail

Maryland - 8 miles

Maryland's Intercounty Connector Trail serves as an important commuting route across Montgomery County and Prince George's County. It gets its name...


Matthew Henson Trail

Maryland - 4.5 miles

The Matthew Henson Trail runs along a paved surface (rough in places from tree roots) through a narrow band of forested green space between the Rock...

Sligo Creek Trail

Maryland - 10.2 miles

The Sligo Creek Trail parallels the eponymous waterway from its confluence with the Northwest Branch in Hyattsville to just north of its origin in...

Anacostia Tributary Trail System

Maryland - 29.9 miles

The Anacostia Tributary Trail System includes a number of trails linked together and managed by the National Park Service. The trail include: the...

Capital Crescent Trail

District of Columbia - 11 miles

The 11-mile Capital Crescent Trail follows the former route of the Georgetown Branch rail line of the Baltimore & Ohio Railroad. It begins in Silver...

Chesapeake & Ohio Canal National Historical Park

District of Columbia - 184.5 miles

Following the Potomac River, the C&O Canal Towpath traverses the Chesapeake & Ohio Canal National Historical Park for 184.5 miles between Georgetown...

Great American Rail-Trail

District of Columbia - 3743.9 miles

The Great American Rail-Trail highlights some of the country’s most iconic landmarks, well-known geography and storied history across a...

Paint Branch Trail (Montgomery County)

Maryland - 2.3 miles

Maryland is home to two Paint Branch Trails, this one in Montgomery County and another farther south in Prince George's County. This Paint Branch...

MacArthur Boulevard Bike Path

Maryland - 8 miles

The MacArthur Boulevard Bike Path follows the winding road through the communities of Bethesda and Potomac, just north of Washington, DC. Along the...

Goldmine Loop Trail

Maryland - 2.5 miles

Tucked in the meandering, wooded hills of the sprawling yet understated multimillion-dollar estates of Great Falls, just outside Washington, D.C., is...

Download the TrailLink Mobile App and Take TrailLink With You!
Support The Trails You Love & Get Our Rails to Trails Magazine!
Get Outdoors and Experience Trails With Our New Guidebooks!

Explore by City

Explore by City

Explore by Activity

Explore by Activity

Log in to your account to:

  • View trail paths on the map
  • Save trails to your account
  • Add trails, edit descriptions
  • Share photos
  • Add reviews

Log in with Google


Register for free!

Join TrailLink (a non-profit) to view more than 30,000 miles of trail maps and more!

Register with Google