NCAR and Eldorado Springs loop from Table Mesa

The loop typically starts from the Table Mesa area in Boulder. You can find parking at the National Center for Atmospheric Research (NCAR) Visitors Center, which is a common starting point for this route. Be aware that parking can fill up, especially on weekends.

This loop is generally considered a moderate road ride and requires good fitness. It features a steady uphill climb into Eldorado Springs and another significant ascent to NCAR. While not overly steep, the sustained climbing might be challenging for absolute beginners. Cyclists with some experience and a decent fitness level will enjoy it more.

The route is predominantly paved, offering a smooth road cycling experience. There might be very small sections of unpaved surface, but it's largely suitable for a racebike. Expect rolling hills, a steady climb into Eldorado Springs, and a significant ascent to the NCAR Visitors Center, followed by mostly downhill sections on the return.

The loop is enjoyable for much of the year, but spring and fall are particularly scenic. Fall offers breathtaking fall colors, especially along the creek in Eldorado Springs. Summer is also popular, but be prepared for warmer temperatures. Winter cycling is possible, but check road conditions for ice or snow, especially in shaded canyon areas.

While cycling through Boulder Open Space and Mountain Parks generally doesn't require a fee, if you choose to enter Eldorado Canyon State Park as part of your ride, there is a per-bike fee of $3.00. This section within the park includes a significant climb. No other specific permits are mentioned for the main loop.

This loop is celebrated for its spectacular scenery. You'll enjoy stunning vistas, grasslands, forestlands, and epic mountain views. The NCAR Visitors Center section provides splendid views of the Flatirons. As you enter Eldorado Springs, you'll see canyon walls soaring high, often with rock climbers, and a rushing creek. Don't miss the Davidson Mesa Overlook for panoramic views.

As this is primarily a road cycling route, it's generally not suitable for dogs to accompany cyclists. If you plan to visit Boulder Open Space and Mountain Parks areas along the route, specific regulations apply to dogs, including leash laws and designated trails. Always check local signage for the most current rules regarding pets.

Yes, the route utilizes and intersects with several other paths. You'll find yourself on sections of the US 36 Bikeway, Broadway Path, Marshall Mesa, and the South Boulder Creek Trail. Other smaller segments include Davidson Mesa, Bear Creek Path, and the N.C.A.R. - Table Mesa trail.

The Table Mesa area in Boulder has various amenities. You can find cafes and shops nearby where you can grab a coffee or a snack before or after your ride. It's a good idea to carry enough water and nutrition for the duration of the loop, as options might be limited directly on the route, especially in the canyon sections.

While this is primarily a road cycling route, the Fowler Trail is a hard-pack trail with breathtaking views along a dramatic canyon drop-off. If you're keen to experience it, you might need to walk your road bike for a segment. It offers a unique perspective but is not typically ridden on a racebike.

Given the moderate difficulty and elevation changes, pack essentials like plenty of water, energy snacks, a repair kit (spare tube, pump, levers), and appropriate cycling attire. Layers are recommended, especially in spring and fall, as temperatures can vary. Don't forget sunscreen, sunglasses, and a helmet.