Skip to content
Trailism
Menu
About
Purpose
Portfolio
Product Info
Conditions
Contact
Recent Posts
Menu
Building
Trail Building History
Trail Building Resources
Reading Materials
Trail Difficulty Ratings
Guide for Quality Trail Experiences (GQTE)
Trail Builders’ Travel and Pay Guide
Building Insights
Removing Rocks From Holes
Trail Hardening— Replacing or Capping Unsuitable Soils (Geotextiles)
Trees
Silvics of North America
10 Most Common Trail Building Mistakes
Cool Trail Solutions
Wider Rims Are Better and Why Tubeless Tires Burp Air
Politics
Impacts of Mountain Biking
Muddy Trails
Shared Use Trails
Skidding Culture is Not Stewardship
Rules of the Trail
IMBA’s Position on The Wilderness Act
Trail Volunteerism
The Pollution of Viewsheds Hut by Hut
Avoid Gore-Tex
Tools
Trail Hand Tool Maintenance
Liability
Costs
Science
Trail Science- Trailology
Trail Science pages
Moving Rocks with High Lines and Levers
Bike Jump Design
Jump Building Guide
Roller (and drain) Design
Trail Turn Design
Crib Walls and Retaining Walls
Soil and Rock
Soil Compaction
Soil- surveys and more
Trail Surfacing
Sand and Gravel Filter/Drainage Design
Stability Criteria for Soils Under Seepage
Soil Mechanics- Slope Stability
Engineering Geology And Geotechnics
Rock Key, Selection, and Splitting
North East Geology
Footprints of the Ice Age
Geology of the Hudson Highlands
Water and Trails
Water and Trails Resources
Frost Heave
Snow Water Equivalents
Drainage Lenses
French Drains
Water Bars
Trail Grades (and outslope)
Knot Science
26 vs. 27.5 vs. 29 Down Hills
Trail Math
Art
Art
Stairs On Trails
Trail Bridges
Switchberms and Climbing Turns
Flow versus Flowy Trails
Journeys
Maps & Mapping Resources
Hikes and Rides
IMBA Epics
State High Points
120 Trails in 18 Days- A Southeastern MTB Epic
Find A Spring
Why vegan?
Dirty Century
About Dirty Century
Code
SDDC
SD Big Ring
SD Big Point Rides
SD DHC
Epic MTB Rides- Worldwide
Sights
The Biodiversity Heritage Library
Critters
Vistas
Bridges
Rustifacts
Rocks
Water
Fueling the Journey
Gear
Bikes On Roof
Gear On Roof
Stickers
Find A Spring
Home
Find A Spring
Find A Spring
Scroll to Top