New! Bay to Bay Trail Out-and-Back (Horsetooth Reservoir, Fort Collins, CO) | Opened May 2025

Moderate Trails
Written By Sierra Wilde

NOT Stroller-Friendly

NOT New-Walker-Friendly

Kid-Friendly

Dog-Friendly

Mostly Exposed

Out-and-Back

Discover the new Bay to Bay Trail, a picturesque path along Horsetooth Reservoir near Fort Collins, CO, offering stunning water views and abundant wildflowers. This narrow, winding trail connects Inlet Bay and South Bay, providing unique access points for a quick splash. While beautiful, be prepared for limited shade and navigate around heavy foot and bike traffic, making it best suited for older children and adults.

 
 

Detailed Trail Description:

The new Bay to Bay Trail offers a scenic journey along the shoreline of Horsetooth Reservoir, connecting the Inlet Bay trail to the South Bay trail. As you traverse this narrow trail, you'll be treated to stunning views of the sparkling water on one side and either grassy slopes or a steep cliff line on the other. Shade is very limited, though you'll spot occasional trees perfect for quick breaks. The southern section tends to offer slightly more shade compared to the northern portion.

The path closely follows the shoreline, offering a few convenient access points where you can safely reach the water's edge for a refreshing splash or a moment of quiet contemplation. While the views are spectacular, with tons of wildflowers dotting the landscape, be mindful of thorny plants like stinging nettle, thistle, yucca, and prickly pear cacti along the edges.

This trail features noticeable elevation changes that can be tiring, even for experienced young hikers. Be prepared for a dynamic walk that isn't entirely flat.

Plants (Left to Right, Top to Bottom): Blanketflower, Common Stork’s Bill, Goldenrod, Harebell, Larkspur, Lewis Flax, Mariposa Lily, Plains Prickly Pear, Prairie Sunflower, Prairie Sunflower, Prickly Poppies, Silvery Lupine, Stinging Nettle, Yarrow, Yucca, by Sierra Wilde

Accessibility Notes:

Kid-Friendly Notes: Recommended for confident walkers aged 5 and up due to the narrow path, varied terrain, and need to navigate around other users. Children should be able to follow voice commands well.

Dog-Friendly Notes: Dogs are welcome on-leash. Given the narrowness and potential for high traffic, ensure your dog is well-behaved and comfortable passing others closely.

Trail Traffic:

Expect heavy foot traffic, particularly near campsites, and very heavy mountain bike traffic.

Planning Your Trip:

  • Trailhead Location: The trail connects two main areas. You can start from either South Bay or Blue Sky parking lots.

  • Parking: South Bay (paved), very large parking area ; Blue Sky (gravel), ~55 spots

  • Facilities: Restrooms, picnic areas, water fountains, beach access

  • Cost for Entry/Parking: $10/vehicle day use; visit Larimer County’s website for annual permit pricing

  • Timed Entry/Reservations: None

  • Nearby Cafes: Horsetooth Tavern, JJ’s Wood Fired Pizza, Little on Mountain, and Cafe Bluebird

Important Considerations:

  • Trail Narrowness & Visibility: The Bay to Bay Trail is very narrow (often single-person wide) with limited safe spots to step off. Visibility can be challenging in certain sections, especially around curves.

  • Slippery When Wet: The trail appears to be composed mostly of clay, which can become quite slippery and muddy when wet or after rain. Exercise extreme caution to avoid slips and falls.

  • Bike & Foot Traffic: Expect significant bike traffic and heavy foot traffic. Be prepared for riders who may not use bells or vocal warnings.

  • Safety with Littles: Due to the narrowness and traffic, keep children very close to you and on their side of the trail. Practice consistent voice commands. Consider dressing them in vibrant colors for increased visibility.

  • Heat Safety for Kids & Dogs: With very limited shade and potential for high temperatures, be extremely cautious about the time of day you are on this trail. Plan your hike for early mornings or late evenings during warmer months to avoid heat stroke, exhaustion, and paw pad burns. Bring ample water for everyone, including pets.

  • No Road Return: Do NOT plan to walk the main road back as an alternative to the out-and-back trail. It is not recommended for pedestrian safety, is very strenuous, and is longer mileage. Instead I highly recommended shuttling a car by parking one at each end of the trail. Otherwise, be prepared to carry your child for sections of a nearly 4-mile out-and-back with elevation changes.

  • Sun Protection & Hydration: With very limited shade, sun protection (long, loose-fitting clothing, hats, sunscreen) and plenty of water are essential, especially during warmer months.

  • Boat Exhaust: On busy reservoir days (especially holiday weekends), expect to catch exhaust from boats.

  • Thorny Plants: Watch out for stinging nettle, thistle, and cacti along the trail edges. Keep curious hands (and paws) close.

  • Elevation Changes: While not extreme, the undulating terrain can be more tiring than expected for little legs, even for kids accustomed to longer but flatter hikes.

 

Ready to embrace the views few have yet to see? Share your adventure with us using #GetOutdoorsTogether

Sierra Wilde