Hiker Atlas

Like AllTrails, but worse.

Hey! I'm Colin. This is a free hobby project, so set your expectations accordingly. It's built on open data, mostly OpenStreetMap, and it's open source: see hikeratlas on GitHub, where you can also tell me what's wrong.

Disclosure: this is 99% vibe-coded slop. But at least it's not enshittified!

Open the map
Featured park · ColoradoRocky Mountain National Park82 day hikes · 6 base camps · 3 multi-day trips · 10 quick stopsStart withEasyMills Lake · 8.1 kmHalf dayFlat Top Mountain Trail to Hallett Peak · 15.6 kmBig dayLongs Peak · 20.8 kmExplore its 82 hikes
Measuring elevation…
Featured hike · Rocky Mountain National ParkFlat Top Mountain Trail to Hallett PeakModerate15.6 km · ↑ 983 m · ~5.5 h · out & back · from Bear Lake
  1. 1Bear Lake
  2. 2Dream Lake Overlook
  3. 3Emerald Lake Overlook
  4. 4Flattop Mountain
  5. 5Hallett Peak
8 trip reports from hikers who've done itSee the hike

Hikes picked for you

Each park's best hikes, with picks to start with. Filter by length, difficulty, lakes, summits and loops.

Know before you go

Distance, climb, walking time and difficulty in plain words. See the elevation profile, the terrain, and the lakes, peaks and waterfalls you'll pass.

From people who've been

Links to trip reports and trail guides from hikers' own blogs, for the hikes they write about.

A map made for hiking

Trails, contours, shaded relief and aerial imagery. Search for parks, peaks, lakes and trails.

Plan your own route

Click points on the map and Hiker Atlas routes you between them along trails and roads, with the distance, climb and elevation profile.

Take it with you

Download a hike's GPX, get directions to the trailhead, or try the Android app (in preview).

Blog

Anger and hubris. Like most good things, these two emotions drove me to build Hiker Atlas.

Anger: despite being a paying AllTrails subscriber, I somehow got my paid account on their WAF blacklist. It's been fixed, but at the time, it felt absurd. The data is mostly open source or crowd-sourced. I'm paying them for this privilege, and yet they block me?

Hubris: hey, they're just showing open source information, how hard could it be?

Turns out, it's a little involved. This blog documents my journey as I learn about open-source cartography, circa 2024. Hope it's helpful to someone!