Tread Hardening and Surfacing

Skill Definition

Install the appropriate treadway hardening technique for a trail given the slopes, soils, available material (e.g., wood, rock, gravel) and designed use, including advanced hardening techniques including but not limited to aggregate addition, various types of rock armoring, turnpiking, rock culverts, boulder causeway, rock drains and chemical additives

Entry Level Performance

  • Demonstrate understanding of a variety of tread hardening treatments and the trail issues each technique addresses and when hardening is or is not needed
  • Safely perform a variety of tasks to further basic tread hardening construction projects, such as materials quarrying, staging, and application with supervision
  • Stabilize (set) rocks and wood and perform basic carpentry and rockwork with supervision

Full Performance Level

  • Implement construction specifications for all types of tread hardening structures in identified location independently
  • Manage crew safety and efficiency when hardening or surfacing trail

Expert Level Performance

  • Interpret construction specification to be site specific (if provided) -Identify and implement the appropriate tools and techniques to efficiently and effectively harden trail tread, ranging from basic to complex techniques

Resources for Tread Hardening and Surfacing

Documents and MediaVideo TrainingsTraining Programs
Find TrainersFind Workers


Learn More

Documents and Media for Tread Hardening and Surfacing

North Country Trail Handbook
North Country Trail Handbook

The North Country National Scenic Trail (NST) extends for thousands of miles across seven states. Its layout, design, construction, and maintenance require the participation of a myriad of individuals and groups.

Tread Re-Construction
Tread Re-Construction

This course goes beyond a triage approach covered in Course 203 Waterbars and Checks because reconstruction indicates a more thorough restoration of damaged tread to ideal specifications. Review hillside hydrology and how trails should work.…

​​Foundations of Sustainable Trails: Hydrology
​​Foundations of Sustainable Trails: Hydrology

​​Learn the basics of constructing and maintaining sustainable trails that function within the hydrology of their environment. You will learn about hydrology as the behavior of water over, under, and through the land, and you will learn some best…


Trail Skills Training Library

Recorded Trainings for Tread Hardening and Surfacing

Fundamentals of Aggregate Surface Trails
Fundamentals of Aggregate Surface Trails

This session will include a general introduction to various types of trail surfacing, this webinar will focus on design and construction factors specific to aggregate surfaced trails.

Basic Soil Mechanics for Trailbuilding
Basic Soil Mechanics for Trailbuilding

This session will provide applicable knowledge of soil including soil description, grain size distribution and its measurement, clay plasticity, and compaction curves and the importance of water.


Further Education

Training Programs for Tread Hardening and Surfacing

IMBA Trail Management Schools
IMBA Trail Management Schools

This school is typically two days in length with IMBA instructor(s) traveling to your location to deliver the class to staff or members. Instructors arrive the day before to assess the site and do any necessary preparations. Organizations, clubs, or…

IMBA Trail Care Schools
IMBA Trail Care Schools

Trail Care Schools equip volunteers and organizations with the skills necessary to maintain modern mountain bike trails in partnership with the local land management. This course will begin with sustainable trail design principles, such as drainage…

Sustainable Trail Building One Year Certificate Program
Sustainable Trail Building One Year Certificate Program

In this one-year certificate program, you’ll have boots-on-the-ground at Northwoods Stewardship Center in East Charleston, VT for three individual week-long intensive classes. You will grow your knowledge base and connect with trail building…

Trail Academy
Trail Academy

Trail Academy is our free class series that teaches students how to tackle any trail-related challenge. Courses are hosted both in the field and online, and are a great starting point for anyone looking to become a certified Trail Crew Leader or…

Trail Sustainability Institute
Trail Sustainability Institute

The Trail Sustainability Institute (TSI) is NWTA’s internal training classes for everything related to trail building. We want to make sure our trail builders are knowledgeable in not only how to build/maintain fun trails, but ensure those trails…

Trails Certificate
Trails Certificate

Gain insight into best practices related to the design, construction and maintenance of trails. Learn about and apply techniques that can enhance, rehabilitate and protect trails and greenways. Participants will also learn about trail…

Custom Trainings

There are 78 trainers on TrailSkills
with Tread Hardening and Surfacing experience

Hire Workers

There are 285 workers on TrailSkills
with Tread Hardening and Surfacing experience

Suggest a Resource

Contact Us

Know of a good resource for this skill? Let us know! From webinars, to workshops, to PDFs, we'd like to add them to our resource library.

Let us know
Trail Skills Collaborators
Federal Highway Administration USDA Forest Service National Park Service Bureau of Land Management
American Trails Professional TrailBuilders Association Partnership for the National Trails System Northern Vermont University Northwest Arkansas Community College Eppley Institute Society of Outdoor Recreation Professionals Washington Trails Association