Here's How to Climb Mount Antero in Colorado

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How to Climb Mount Antero in Colorado

Mount Antero rises to 14,276 feet and stands as one of the prominent peaks in Colorado’s Sawatch Range. Known for its gemstone-rich slopes and wide, 4WD-accessible roads, Mount Antero offers a unique experience for hikers and off-roaders alike. It’s a Class 2 hike that can be done in a day, though the approach is long and the route is exposed to the elements.

Getting to the Trailhead

From the town of Nathrop, turn west onto County Road 162 and drive toward the Baldwin Gulch Road (Forest Road 277). This is where things get rough. If you have a high-clearance 4WD vehicle, you can drive nearly 3 miles up the rugged road, cutting down on hiking distance. If not, park at the lower trailhead near 9,000 feet and prepare for a longer day.

Route Overview: Baldwin Gulch / South Ridge

The standard route up Mount Antero follows the Baldwin Gulch 4WD road, which switchbacks through forest and eventually opens to alpine tundra. From the lower trailhead, expect about 6 miles of steady uphill walking just to reach 12,000 feet.

At around 13,800 feet, leave the road and head north toward a ridge that leads directly to the summit. This final section is on loose rock and requires a bit more care with footing, especially when crossing talus or snow patches lingering into early summer. The summit is a small pile of rocks with panoramic views of the Sawatch Range.

If starting from the lower trailhead, expect a round-trip distance of about 14 miles with over 5,000 feet of elevation gain. From the upper 4WD parking area, the hike is closer to 7 miles round-trip.

Optional: Off-Road to the Upper Slopes

Many hikers choose to shorten the day by driving up the 4WD road, but it’s not for the faint of heart. Expect steep grades, exposed sections, and water crossings. If you're not experienced with off-road driving, it may be better to hike the road or hitch a ride with someone else.

Tips for Climbing Mount Antero

  • Start early to avoid afternoon storms and to beat the sun on the exposed upper slopes.

  • Wear sturdy footwear—most of the trail is on rock and gravel.

  • Bring layers, plenty of water, and protection from wind and sun.

  • Expect to share the road with ATVs, dirt bikes, and off-road vehicles.

Mount Antero blends rugged mountain hiking with Colorado’s mining history and stunning views. Whether you're hiking the road from the valley or driving partway up, it’s a rewarding 14er with a character all its own.