CalTopo is a professional-grade outdoor mapping and navigation app trusted by hikers, mountain guides, search & rescue teams, and backcountry explorers. Plan routes with detailed topographic maps, download maps for offline use, track your GPS location, monitor weather and terrain conditions, and seamlessly sync your maps across devices for every adventure.
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Maker
📌
We're excited to introduce CalTopo – Smart Maps for Every Adventure 🏔️🗺️
Every great adventure begins with a great map.
Whether you're hiking remote trails, climbing alpine peaks, planning a backpacking trip, or coordinating a search and rescue mission, CalTopo gives you the tools to plan with confidence—even when you're completely off the grid.
Built for serious outdoor enthusiasts while remaining accessible to beginners, CalTopo combines powerful mapping technology with reliable offline navigation to help you explore safely and efficiently.
✨ Why CalTopo stands out:
🗺️ Professional mapping layers — Access topographic maps, satellite imagery, Forest Service maps, public land boundaries, marine charts, shaded relief, and many more specialized layers.
📍 Offline GPS navigation — Download maps before your trip and continue navigating even without cellular coverage. Your GPS location remains available while offline.
🏔️ Backcountry planning tools — Analyze slope angle, sun exposure, weather forecasts, snow conditions, water data, wildfire activity, and terrain before heading into the wilderness.
📲 Automatic cloud sync — Plan routes on your desktop and instantly access them on your mobile device with seamless synchronization.
👥 Real-time collaboration — Share maps, live locations, and route updates with teammates, guides, or expedition partners.
📈 Advanced route planning — Create routes, mark waypoints, measure distances, and analyze elevation profiles before your adventure begins. Recent updates also add improved mobile route planning features like Snap To.
🚨 Trusted by professionals — Used by mountain guides, avalanche educators, wildland firefighters, and search & rescue teams who rely on accurate mapping in demanding environments.
Whether you're planning a weekend hike, an ultralight backpacking trip, an overlanding expedition, or a complex rescue operation, CalTopo delivers the mapping tools needed to navigate with confidence.
💬 We'd love your feedback:
Which map layer do you rely on most—Topo, Satellite, or Public Lands?
What's the most remote place you've explored using offline maps?
Which feature would make CalTopo your ultimate outdoor navigation companion?
Let's make every adventure safer, smarter, and better planned—one map at a time. 🧭🌍
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The offline map syncing across devices has saved me more than once when cell service vanished mid-route. The layer toggling for weather and terrain overlays feels like it was designed by people who actually use this stuff in the field.
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Love how reliable CalTopo is for offline use during long trips, that's saved me more than once. One thing I'd love to see is built-in slope angle shading overlay directly on the map view, so I can quickly gauge terrain steepness without flipping between layers. Would make route planning way more intuitive when scouting trails for the group. Keep up the great work.
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love using caltopo for backcountry trips, but one thing that would actually help is adding a quick "share my live location with my group" button that sends a simple link to my hiking partners without needing them to create an account first. would make coordinating in the field way easier.
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Maker
From a UX standpoint, CalTopo does an impressive job of presenting complex mapping tools in a way that remains approachable. Advanced features like terrain layers, custom maps, and route planning are available when you need them, while the overall experience stays responsive and organized. The cross-device synchronization also makes planning on a larger screen and navigating on mobile feel seamless. Great work by the team!
Report
Maker
Plan smarter. Navigate confidently. Explore farther.
CalTopo combines powerful route planning, detailed maps, offline navigation, and reliable syncing into one outstanding outdoor tool. Whether you're hiking, backpacking, skiing, or exploring new trails, it looks like an excellent companion. Congratulations on the launch!
Report
Maker
Huge congratulations to the CalTopo team! Building software that helps people safely explore nature is a meaningful mission. From weekend hikers to professional rescue teams, you've created a platform that supports real adventures and real-world decision making. It's exciting to see continuous improvements and a clear commitment to serving the outdoor community. Wishing you a fantastic Product Hunt launch and continued success!
The offline map syncing across devices has saved me more than once when cell service vanished mid-route. The layer toggling for weather and terrain overlays feels like it was designed by people who actually use this stuff in the field.
Love how reliable CalTopo is for offline use during long trips, that's saved me more than once. One thing I'd love to see is built-in slope angle shading overlay directly on the map view, so I can quickly gauge terrain steepness without flipping between layers. Would make route planning way more intuitive when scouting trails for the group. Keep up the great work.
love using caltopo for backcountry trips, but one thing that would actually help is adding a quick "share my live location with my group" button that sends a simple link to my hiking partners without needing them to create an account first. would make coordinating in the field way easier.
From a UX standpoint, CalTopo does an impressive job of presenting complex mapping tools in a way that remains approachable. Advanced features like terrain layers, custom maps, and route planning are available when you need them, while the overall experience stays responsive and organized. The cross-device synchronization also makes planning on a larger screen and navigating on mobile feel seamless. Great work by the team!
Plan smarter. Navigate confidently. Explore farther.
CalTopo combines powerful route planning, detailed maps, offline navigation, and reliable syncing into one outstanding outdoor tool. Whether you're hiking, backpacking, skiing, or exploring new trails, it looks like an excellent companion. Congratulations on the launch!
Huge congratulations to the CalTopo team! Building software that helps people safely explore nature is a meaningful mission. From weekend hikers to professional rescue teams, you've created a platform that supports real adventures and real-world decision making. It's exciting to see continuous improvements and a clear commitment to serving the outdoor community. Wishing you a fantastic Product Hunt launch and continued success!