Loam
Field notes and data
Loam field reports
These reports show how the condition model behaves. We include the numbers, how we got them, and what they cannot tell us.
4 stories
2025 report
State of the Dirt: 2025 in review
We took a year of old weather and asked what today's Loam model would have told riders at 24 places across the United States and Canada.
Terrain census
What the average mountain bike network actually looks like
Elevation, slope, and canopy across 312 published networks, plus the ones sitting at each extreme.
Grade and shade
Grade and shade: the four terrain combinations
Slope and canopy crossed against each other across 312 networks, and why aspect stops mattering once the ground goes flat.
Canopy by state
Canopy cover by state: Quebec's networks average 96%, Arizona's average 8%
Averaged canopy cover for every state and province with at least 5 published networks, from 96% to 8%.