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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

Gear Builder
Create your own fully customizable gear list with weight, pricing and divisable by section.

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

Continental Divide Trail Snow Report

The Continental Divide 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 Continental Divide 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 CDT 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

Continental Divide Trail Snow Conditions, current SWE by mile
CDT Maps

Continental Divide Trail
topographic maps

Carson-San Juan NF GNP-Bob Marshal NF


Carson-San Juan NF

SNODAS/MODIS, Carson-San Juan NF

Continental Divide Trail Snow SNODAS/MODIS, Carson-San Juan NF
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.

Sentinel-2 20m (~65 feet) Snow Cover

Continental Divide Trail Sentinel-2 20m (~65 feet) snow cover, Carson-San Juan NF
View this Sentinel-2 20m (~65 feet) resolution overlay on the Postholer Google Map. Last Sentinel-2 6 day data was on Jul 28, 2020. Sentinel-2: No Data, Snow cover.

SNODAS SWE, Carson-San Juan NF

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

GNP-Bob Marshal NF

SNODAS/MODIS, GNP-Bob Marshal NF

Continental Divide Trail Snow SNODAS/MODIS, GNP-Bob Marshal NF
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, GNP-Bob Marshal NF

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

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