LoamLoam App StoreGoogle Play

How Loam checks itself

Loam checks its own trail condition estimates against rider reports and an independent weather source. This page shows the current numbers, with the sample size behind each one.

Numbers current as of Wed, 09 Sep 2026 12:01:55 GMT.

What these numbers can tell you

Rider agreement compares the estimate with what riders reported. The weather cross-check compares forecast sources. Neither is a direct measurement of the trail surface, and neither establishes accuracy for every network or season.

Rider agreement

Loam compares rider feedback with the verdict shown. An in-app report after a ride carries more weight than an anonymous web report. The percentage below reflects those weights.

Trailing 30 days
Not enough reports yetn = 14
Trailing 90 days
Not enough reports yetn = 26

By verdict

How often each verdict word held up against a rider's report, over the trailing 90 days.

PRIME Not enough reports yetn = 26

Weather cross-check

Loam scores trails from Open-Meteo's forecast. Over the trailing 7 days, that forecast's rain is compared against WeatherKit's independent reading for the same place and hour, across 244 networks.

Rain bias (inches)
-0.002 inn = 259
Mean absolute error (inches)
+0.052 inn = 259
Wet / dry disagreement
5%n = 259

What this does not measure

  • Rider agreement is self-reported by riders who chose to answer. It is not a random sample of every ride, and riders who had a surprising ride may be more likely to report.
  • The sample sizes above are small relative to the number of verdicts Loam serves. A percentage backed by fewer than 30 reports is withheld rather than shown, but even above that line, a few dozen reports can shift the number meaningfully.
  • There is no independent, on-the-ground trail-surface measurement in this comparison yet. The rider-agreement numbers compare against what a rider said they found, not a physical measurement of the trail; the weather cross-check compares two forecast sources, not ground truth rain.
  • These numbers are not adjusted for network, season, or region. A hard month for one climate can move the aggregate without meaning much for a specific trail.

What the Verified mark means

Verified identifies a network whose location and terrain have been independently checked. It does not verify today's trail condition. Soil stations, satellite readings, and rain gauges are other model checks; the published results above describe only the comparisons and samples shown here.

See the data sources or check a trail's current estimate.