The Challenge Almanzo Pro Tire is named after the Almanzo 100 gravel race in Minnesota, making this a heavyweight all-terrain tire for use with road bikes. The Almanzo was designed specifically for gravel racing, featuring a file tread pattern that provides excellent grip with a wider, more forgiving profile for those bumpy roads. Each Almanzo Pro tire features Challenge's double puncture protection, offering the highest level of protection from slashes, tears, or other types of punctures.
- ISO diameter: 622.
- ISO width: 33mm.
- SuperPoly casing.
- Double PPS Protection.
- Sidewall options: Black or Black/Tan.
- Claimed weight: 385 grams.
Ordered by Most Relevant First
Excellent Gravel Tire
by John McBurney
Beautifully made open tubular. Very fast tools well. Grippy but sheds mud well.
Was this review useful to you? Yes
Thank you for your feedback.
Articles will open in new tab.
A short primer on emergency bicycle tire repair.
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Selecting the proper tires for vintage bicycles.
A how-to guide to removing and installing tires, plus some useful tire tips.
Find your tire size in this exhaustive chart.
Know your tire size. This article provides a summary of the common, and not so common, bicycle tire sizes.
Keep on rolling safely with these tire tips and recommendations.
Tubular, clincher, tubeless? Wire bead or Kevlar bead? Application? Find answers here.
The tube run-down: valves, weights, valve stems, sizing, and more.
Ride smoother, faster, and lighter with tubular tires.