"Chattanooga has a lot of amazing intermediate and advanced trails, but we have very little for a kid's first time rolling on dirt." Youth mountain bike leader Eric Wiens said that to Chattanoogan.com days before the Tennessee River Gorge Trust opened the second phase of the Aetna Mountain Trails. He was describing a gap, and the new trails fill it from a parking lot above Black Creek.
The expansion opened to the public on August 21, 2026. It added four miles of singletrack and brought the system on Aetna Mountain to about eight. The Chattanooga Times Free Press reported that the system doubled in size. Tennessee River Gorge Trust Executive Director Eliot Berz told the paper the new trails were built for beginner- to intermediate-level users, based on community input. The new Homesite Loop gave the green side a second loop. That more than doubles the beginner loop mileage Aetna had before Phase II, which was Skull Cap's 1.2 miles.
The gap the green side fills
The baseline is a lot of trail. When Phase II opened, SORBA Chattanooga Executive Director Sunshine Loveless told Chattanoogan.com the region now has 190 miles of mountain bike-accessible trail within 30 minutes of downtown. Wiens' point was that very little of it suits a child's first ride. In the same article he called the new green loop "a huge addition" for kids and families who are starting out. He said the green Aetna trails have "a great elevation profile for beginners, and the old chimney at the top gives kids a fun goal to work toward."
Aetna was built with that range in mind from the beginning. The original trails opened September 29, 2023, after community engagement found a need for sustainable trails that riders of many skill levels could use. Phase II carried that further. It added a beginner-friendly green loop, plus a blue loop that climbs to the base of the mountain's bluff. A family can now start on the easy loops and move up to the harder ones without leaving the trailhead.
How the eight miles fit together
Trailforks describes the system as a figure-8 of stacked loops. The green beginner side is for newer riders building confidence. The blue intermediate side has more elevation change and flow features. Here are the named trails, with lengths and ratings from Trailforks:
| Trail | Phase | Rating | Length | What to expect |
|---|---|---|---|---|
| Skull Cap Loop | I, 2023 | Green | 1.2 mi | Wide, rolling, beginner-friendly |
| Homesite Loop | II, 2026 | Green | 1.3 mi | Easy rating; some climbs may feel hard for newer riders |
| Chinquapin Loop | I, 2023 | Blue | 2.3 mi | Moderately challenging, with steep and rocky sections |
| Aetna Flyway | II, 2026 | Blue | 2.2 mi | Moderately challenging, with steep pitches |
| Valley View Spur | II, 2026 | Green | 899 ft | Short link to River Gorge Drive; no dedicated parking |
Together, Skull Cap and Homesite give about two and a half miles of green loop, and Homesite links to both Skull Cap and Aetna Flyway. A rider who has grown out of the green side can step from Homesite onto the Flyway, the climb that Chattanoogan.com describes as reaching the bluff base. Trailforks says both green loops suit kids and adaptive bikes.
Trailforks also lists a few very short connectors, including a 43-foot Beginner Loop Connector. They tie the loops together, so the mileage on the map is about junctions as much as distance.
Every loop runs two ways
Phase II also changed how the trails ride. The trails are multi-directional, so you can go either way around each loop. SORBA Chattanooga's announcement of the Phase II opening described the loops as having "a twist: two completely different riding experiences depending on which direction you roll." So a family can ride Homesite one weekend and ride it the other way the next, and the climbs and descents land in different places.
The same SORBA announcement says every foot of the eight miles is adaptive-MTB friendly. That wasn't true when Phase I opened. Working from feedback and earlier consultation with Catalyst Sports, the Tennessee River Gorge Trust team and volunteers went back through Phase I and completed reroutes and improvements, so the whole system is now adaptive-friendly. If you rode Skull Cap or Chinquapin in 2023 or 2024, parts of those loops may not match what you remember. Trailforks also notes that advanced features can generally be bypassed.
The trails are shared with hikers and trail runners, and Trailforks lists dogs as allowed on the named loops. Its guidance asks cyclists to ride under control and yield to other users. It also asks that dogs be kept under control so they don't bother other trail users or wildlife. Trailforks lists Class 1 e-bikes as allowed on Homesite Loop, Aetna Flyway, and Valley View Spur.
Getting to the trailhead
The address most people type into a map app takes them to the wrong spot. The Tennessee River Gorge Trust's Aetna Mountain Trails page says the trailhead is about half a mile up the mountain past 2924 River Gorge Drive. That address is a model home. Keep driving up River Gorge Drive to the trailhead parking lot at a hairpin curve.
Here's what to expect when you get there, based on the Trailforks area listing, last updated October 7, 2026:
- Parking: a free paved lot right next to the trails. Overflow parking at the top of the mountain, with shuttles, has been used for larger events.
- Facilities: none. There are no restrooms on site, which matters on a long outing with kids.
- Cost: no day-use fee or trail permit is listed for normal recreational use. The land is private property conserved and managed by the Tennessee River Gorge Trust.
- Group outings: organized, commercial, or other non-routine activities may need permission from the Trust, so check with them before planning a group ride.
- Status: the area showed open as of October 7, 2026.
Valley View Spur is the other way in. It's a short green link from Aetna Flyway to River Gorge Drive, meant as neighborhood access, and it has no parking. The spur meets the trail system on the blue Flyway, not the green loops. A parent walking a first-time rider in from the street will need to get from the Flyway over to Homesite before the easy riding starts.
The fall clock
The posted hours are sunrise to sunset. In October that leaves time after school or work for a lap of Skull Cap and Homesite. When clocks fall back on November 1, that window closes earlier in the evening, and weekends become the easier time for a family ride.
If you'd like a guided day out with the dog in early November, it's just down the valley. Reflection Riding, at 400 Garden Road, hosts Tails, Trails, and Ales on Saturday, November 7, from 10 a.m. to 1 p.m. The dog-friendly trail day has a 1-mile Pup Dash, a 5K, and a 10K.
The Aetna trails exist because many groups contributed. Black Creek donated land and money. Funding also came from local community members, the Lyndhurst Foundation, the International Mountain Bicycling Association, the Riverview Foundation, Tower Community Bank, Chattanooga Tourism Co., Hamilton County, Gearhead Outfitters, Fox Factory, RH Aviation, and Robert, Sara and Hawkins Mingus. Barry Smith Trails built Phase II, following a trail master plan from IMBA. The Trust takes maintenance and access concerns through a trail-issue reporting form, and its project page has a feedback form and a link for donations toward trail upkeep.
At Bridge City Realty, we're a family-owned Chattanooga brokerage, and we keep up with what's new around Lookout Valley, from trailheads like this one to the roads that lead to them. If you'd like to know which Lookout Valley streets put Aetna Mountain within an easy drive or a short ride, we're glad to talk it through. Start Your Home Search with us.
