3D terrain
Real elevation with satellite or USGS topo imagery. Fly the route, spin the view, or color each section by its hazard rating for your date.
Cascades & Olympics · planning aid
Pick a peak.
Plan the climb.
Explore Washington's big mountains on real 3D terrain, then work out camps, dates, weather, hazards and gear for the route you want to climb.
Peaks and routes
Every route opens on the map, ready to plan. Sorted by elevation.
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What it does
One screen: the map on the left, a planning panel on the right.
Route by section
Trailhead to summit, split into sections with mileage, gain, terrain and hazard ratings for crevasses, rockfall, avalanche, falls and navigation.
Plan
Choose camps, team size and pace. Get an elevation profile and a day-by-day itinerary with moving times and a turnaround time.
Weather at every waypoint
Hourly forecast at each waypoint's own elevation: wind aloft, freezing level, wind chill and new snow, plus the NWS text forecast and sunrise, sunset and moon.
Updates
Active weather alerts, NWAC avalanche danger for the zone, park alerts and curated route and access reports.
Gear list
A checklist built from the route's terrain, the season, your number of nights and the forecast, with ticks saved on this device.
Trip sheet and log
A sheet to leave with someone at home, a trailhead checklist, and a climb log of summits and turnarounds.
Editor
Drag waypoints, trace sections, import a GPX track, or add a whole new peak, then download the file and commit it.
Latest reports
Curated route and access conditions.
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Where the data comes from
No accounts and no API keys. Each source loads on its own, so if one is down the rest keep working.
- TerrainMapzen terrarium tiles, AWS Open Data
- Imagery and topoUSGS The National Map
- Hourly forecastOpen-Meteo
- Text forecast and alertsNational Weather Service
- Avalanche dangerNWAC via avalanche.org
- Route reportsCurated in this repository
Read this first
- Route lines are approximate. They were placed by hand, not surveyed, and are drawn dashed.
- Route facts are unverified. Check elevations, grades and permit rules with the land manager and a current guidebook.
- Weather is model output. Read the NWS and NWAC forecasts as well.
- This is a planning aid, not a navigation tool.