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Routes
Road cycling routes
United States
Colorado
Boulder County
Altona

Main Street loop from Altona

Hard

3.4

(8)

70

riders

Main Street loop from Altona

04:10

84.5km

1,300m

Road cycling

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is right next to a parking lot.

Last updated: April 30, 2026

Tips

The surface along some of this route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 0 m for 126 m

After 84.5 km for 126 m

Waypoints

A

Start point

Parking

Get Directions

1

13.4 km

Main Street

Highlight (Segment) • Settlement

Lyons is a small town north of Boulder and southeast of Estes Park. There are several cute coffee shops, boutiques, and restaurants on Main Street, which makes it a great …

Tip by

2

42.4 km

Ferncliff Food & Fuel and Payphone

Highlight • Rest Area

The Ferncliff Food & Fuel is a small one-stop-shop in the tiny town of Allenspark. There are bathrooms, a pay phone (!), and plenty of snacks and coffee to purchase. …

Tip by

B

84.5 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

56.2 km

23.0 km

3.45 km

1.89 km

< 100 m

Surfaces

82.5 km

1.88 km

166 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 (2,550 m)

Lowest point (1,610 m)

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Weather

Powered by Foreca

Today

Thursday 25 June

19°C

13°C

83 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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