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Routes
Mountain biking trails

Argentine Central Railroad Grade Trail

Routes
Mountain biking trails

Argentine Central Railroad Grade Trail

Hard

7

riders

Argentine Central Railroad Grade Trail

03:32

30.8km

1,050m

Mountain biking

Mountain biking the difficult 19.2-mile Argentine Central Railroad Grade Trail offers historical sites and panoramic views in Arapaho Nation

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Arapaho National Forest

Waypoints

A

Start point

Parking

Get Directions

1

16.2 km

Santiago Mill

Highlight • Historical Site

Built in 1935, the Santiago Mill is a rare example of an American flotation mine located on National Forest Land. The mill closed down in the 1950s and the sampling shed, water tank and ore bin are all that remain.

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B

30.8 km

End point

Parking

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Way Types & Surfaces

Way Types

18.4 km

11.4 km

1.06 km

Surfaces

28.8 km

1.06 km

937 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (3,670 m)

Lowest point (2,800 m)

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Weather

Powered by Foreca

Saturday 23 May

17°C

-1°C

14 %

Additional weather tips

Max wind speed: 10.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Is the Argentine Central Railroad Grade Trail suitable for beginners?

The main section of the Argentine Central Railroad Grade Trail is generally rated as intermediate, making it accessible to a range of riders. It follows an old railroad grade with a steady, gentle ascent. However, extending the ride to Argentine Pass significantly increases the difficulty, becoming treacherously technical and not recommended for beginners.

What kind of terrain can I expect on the trail?

The trail primarily follows an old railroad grade, featuring a steady, gentle ascent. The first few miles include good singletrack before transitioning into a popular jeep trail or doubletrack. The surface is gravel and can become rocky in parts, especially if you continue past the Waldorf Mine towards Argentine Pass.

What are the main scenic highlights along the route?

Riders are treated to diverse scenery, including evergreen and aspen forests, which offer vibrant fall colors. You'll pass multiple old mining sites, providing a glimpse into the area's rich history. A major highlight is Santiago Mill and Pavilion Point, which offers stunning panoramic views east towards Georgetown and west down the I-70 corridor and valley. You might also hear the whistle of the Georgetown Loop Railroad below.

Where can I park to access the Argentine Central Railroad Grade Trail?

Specific parking details are not provided in the available data, but the trail is often enjoyed as a point-to-point ride from Silver Plume to Georgetown, suggesting access points in both towns. It's advisable to research trailhead parking options in Silver Plume or Georgetown before your ride.

Is the trail a loop, or is it typically ridden point-to-point?

The Argentine Central Railroad Grade Trail is often enjoyed as a point-to-point ride, typically from Silver Plume to Georgetown. This allows riders to experience the full length of the trail conveniently.

Are dogs allowed on the Argentine Central Railroad Grade Trail?

While specific regulations for this trail are not detailed, trails within the Arapaho National Forest generally allow dogs, often requiring them to be on a leash. It's always best to check current local regulations before heading out with your dog.

What is the best time of year to mountain bike this trail?

The trail offers beautiful scenery, including vibrant fall colors, suggesting that late spring through early fall (approximately May to October) would be ideal. Always check trail conditions, especially in early season for snowmelt or late season for early snow.

Do I need a permit or pay an entrance fee to ride this trail?

The Argentine Central Railroad Grade Trail is located within the Arapaho National Forest. Generally, there are no specific permits or entrance fees required for day-use mountain biking on trails within the National Forest, but it's always good practice to check the latest regulations from the US Forest Service for any updates or specific area restrictions.

What historical features can I see along the Argentine Central Railroad Grade Trail?

The trail itself is built on the bed of the historic Argentine Central Railroad, offering a unique historical pathway. Along the route, you'll encounter multiple old mining sites and remnants like old chimneys at Pavilion Point, providing a tangible connection to Colorado's mining past.

Does the trail connect with other routes?

Yes, the route intersects with several other paths. Notable sections include the Argentine Central Railroad Grade Trail itself (covering 92% of the route), ADT - Colorado C - Q - Seg 4, Clear Creek Greenway, Leavenworth Creek Road, and the Historic Waldorf Wagon Road, among others.

How challenging is the extended ride to Argentine Pass?

While the main trail is intermediate, extending your ride to Argentine Pass significantly increases the difficulty. This extension is described as "treacherously technical" with steep sections and often requires hike-a-bike. It involves significant elevation gain, reaching up to 13,200 feet at the pass, and is not recommended for beginners.

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