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COVID-19 Status & Maps
Daily status of the COVID-19 pandemic and its relationship to the trails.

Printed Maps & App
Stay found. Stay informead. Our premium printed topographic maps and matching app for a once in a lifetime adventure

OnLine Data Books
Free online data books for your favorite trail, distances, elevation, climate, way points, terrain & fauna

Google Maps
GPS aware Google maps, your location, topo, hybrid, satellite, trail track, way points, road, weather/snow overlays

Active Fires & Smoke
Know before you go! Get the lastest active fire & smoke information for your favorite trail

Snow Conditions
Get the lastest snow conditions for your favorite trail. Quantity, coverage, SNODAS, MODIS, historical and multi-year comparisons

Trip Planners
Create an extensive hike plan easily configurable to your hiking style. Distances, days, resupply, access points, etc

Trail Animals
Exhaustive resource for species ranges along your favorite trail. Includes amphibians, birds, mammals and reptiles.

Complete Gear Lists
Hundreds of complete gear lists by those that walked the walk.

Elevations Profiles
The big picture. Single elevation profile of your favorite trail.

Journal Tools
Search for a journal, create a journal, add/edit an entry, configure your journal, EMail updates, integrated Google trail map, PLB locations and more

Wall Maps
Print out your favorite trail to 6 feet high. Elevation chart and resupply locations.

Postholer Forum
Source for trail and site information or just talk about your favorite trail

Colorado Trail Snow Report

The Colorado Trail snow report is designed to aid hikers in determining the best time to head into the mountains based on snow conditions. Each hikers skill-set and comfort level with these conditions will differ.

The Colorado Trail snow report uses SNODAS modeled snow data and MODIS reflectivity data. SNODAS gives us a good idea about the quantity of frozen water sitting on the ground, denoted by SWE (Snow Water Equivalence) in inches. Coverage is often poorly represented by SNODAS where snow cover is thin. The 8 day MODIS data, without regard for quantity, shows us what areas were snow covered at some point over the last 8 days. Cloud cover and darkness adversely affects MODIS detection significantly, hence we use the 8 day as opposed to the single day coverage. This is the only combined MODIS/SNODAS CT snow map on the internet.

Snow page updates November 1st - July 28th

Trail snow is not snow pack. The Postholer snow page focuses on snow on or near the trail, at trail elevation, not on snow condtions thousands of feet lower/higher and miles away from the trail. Ski resort snow reports and snow pack charts are a very poor representation of trail snow conditions.

SNODAS SWE, Entire Trail

Colorado Trail Snow Conditions, current SWE by mile
CT Maps

Colorado Trail
topographic maps

SNODAS/MODIS, Denver to Salida, CO

Colorado Trail Snow SNODAS/MODIS, Crabtree Mdw to Tuolumne Mdw
View SNODAS and/or MODIS overlays on Postholer Google Map. Last SNODAS update was Jul 28, 2020. Last MODIS 8 day was Jul 19, 2020 to Jul 27, 2020. MODIS: No Data, Snow cover.

SNODAS SWE, Rockies

Colorado Trail Snow Conditions, current by mile
Colorado Trail Snow Conditions, current/extreme years
Colorado Trail Snow Conditions 2004 to current

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