Rainbow Trail to South Colony Trailhead

You can park at the South Colony Trailhead. The approach involves a 4WD road, which is generally suitable for mountain biking and leads to the old (closed) 4WD Trailhead.

The mountain biking portion of the route primarily follows a nice wide gravel path on the 4WD road leading to the old 4WD Trailhead. Beyond this point, towards the South Colony Lakes, mountain biking is restricted due to wilderness boundaries. The broader Rainbow Trail is known for varied and challenging terrain, including rocky sections and steep sidehills, but these are not accessible by bike in this specific section.

This route is rated as 'difficult' and covers approximately 41.4 kilometers (25.7 miles) with an elevation gain of about 1316 meters (4318 feet). On average, it takes around 4 hours and 42 minutes to complete the mountain biking portion.

The trail is generally accessible during the warmer months. Given its average elevation of 9,000 feet, late spring through early fall (roughly June to September) typically offers the best conditions, avoiding snow and ice.

Yes, dogs are generally allowed on trails within the San Isabel National Forest. However, always ensure your dog is under control, preferably on a leash, and practice Leave No Trace principles by packing out all waste.

Generally, there are no specific permits or entrance fees required for day use of trails within the San Isabel National Forest, including this section of the Rainbow Trail. However, it's always a good idea to check the official US Forest Service website or local ranger district for any current regulations or alerts before your visit.

As you ride, you'll experience forested areas and green meadows at an average elevation of 9,000 feet. You can expect really big views with hillsides and mountains, and potentially glimpses of the stunning alpine scenery surrounding the South Colony Lakes area as you approach the wilderness boundary.

Yes, the route incorporates sections of several trails. You'll be riding along parts of the South Colony Road, Rainbow - 1336, Rainbow Trail (FS1336), South Colony Spur, North Colony Trail, Horn Creek Trail, and Macy Trail.

Mountain biking is permitted on the 4WD road leading to the old 4WD Trailhead. However, beyond this point, the trail becomes narrower, and mountain biking is restricted due to the wilderness boundary. This area is primarily for hiking access to the South Colony Lakes and prominent 14,000-foot peaks.

Given the 'difficult' rating and the elevation, you should bring plenty of water, snacks, appropriate layers of clothing for changing mountain weather, a helmet, bike repair kit, and navigation tools. Be prepared for varied conditions and potential exposure.

The South Colony Trailhead is primarily a parking area and access point to the wilderness. Amenities are typically limited to basic facilities like vault toilets, if available. It's best to be self-sufficient and carry out everything you pack in.