---
title: Gravel bike routes from Zinn Cycles
description: Maps to great gravel bike routes from Zinn Cycles. There are short medium and long routes all starting at our shop.
---

[Zinn Cycles Blog | Bike Stories, Tech Tips & Featured Rides](https://blog.zinn.bike)

# [Gravel bike routes from Zinn Cycles](https://blog.zinn.bike/zinn-cycles-gravel-bike-routes)

 Written by [nick](https://blog.zinn.bike/author/nick) | Apr 30, 2025, 8:28:11 PM

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**Gravel Bike Routes to Ride from Zinn Cycles in Louisville Colorado**

We have been mapping out fun routes for gravel rides from our shop at Zinn Cycles. These make for great group rides from the shop or test rides when you are here to demo a bike.

**Fun Gravel Routes.**

> 22K loop:
> 
> [https://www.strava.com/activities/11108408806](https://www.strava.com/activities/11108408806)
> 
> 
> 
>  28K loop:
> 
> [https://www.strava.com/activities/11167937121](https://www.strava.com/activities/11167937121)
> 
>  42K loop:
> 
> [https://www.strava.com/activities/11175227123](https://www.strava.com/activities/11175227123)

**Long Gravel Routes from the Zinn Fondo Event:**

[**Corso Corto**](https://ridewithgps.com/routes/50183729) (short loop): 59km, 2,300 feet of climbing (start/finish at Zinn Cycles shop)

OR, with alternative start/finish in Boulder at Eben G. Fine Park: 20km, 1,300 feet of climbing

[**Corso Medio**](https://ridewithgps.com/routes/50183671) (medium loop): 87km with 4,200 feet of climbing (start/finish at Zinn Cycles shop)

OR, with alternative start/finish in Boulder at Eben G. Fine Park: 37km, 3,200 feet of climbing

[**Corso Lungo**](https://ridewithgps.com/routes/50183774) (long course): 98km with 4,700 feet of climbing (start/finish at Zinn Cycles shop)

Climbing Switzerland Trail entails significant technical challenge on a road or gravel bike.

The descents of Sunshine Canyon and Flagstaff Mountain are not to be taken lightly—use appropriate caution. You and only you are responsible for your safety.

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[View full post](https://blog.zinn.bike/zinn-cycles-gravel-bike-routes)

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