On a phone, Trail Twin runs as a hands-free window onto the real Arizona
Trail — a virtual hiker walks it for you under tonight's actual sky, with
live weather and real birdsong. Drag to look around; tap the sky to
identify what's up there.
🚶 Full hiking mode (treadmill / keyboard) lives on desktop
🔋 3D rendering — expect some battery use
🎧 Headphones recommended
TRAIL TWIN
Arizona National Scenic Trail · Mexico → Utah
Sampling terrain elevation…
TRAIL TWIN
A living digital twin of the Arizona National Scenic Trail · Mexico → Utah
Live, not looped — tonight's real sky · the weather on-trail · real birdsong · recent wildlife
Choose how you'll travel
How are you walking?
Choose your starting point
The trail starts quiet — just you and the walk. Tap ✦ (bottom-right) or press H for trail data, weather & time · ESC for the menu
Speed Calibrationreconcile belt speed ↔ camera100%
80%120%
Pairs standard FTMS pads, KingSmith WalkingPads, and FitShow white-label boards over Web Bluetooth. A live connection switches the app from Observatory to Hiker; previously-paired pads reconnect silently.
Jump to Hourtoday's real sun times at your trail position
Live pins the sky to the real wall clock. Any other flow lets the clock run free — walk the trail while the stars arc, planets drift, and the sun time-lapses overhead. Jump to Hour sets the clock to a moment of today and lets it run from there. Warping more than a day into the past also replays that day's real weather and aurora.
Jump to Event
Teleports to the best trail mile and holds the clock at the moment of the event. Pick a Time Flow above to watch it unfold.
Controls
Look · hold, release to recenter
Qup-left
Wup
Eup-right
Aleft
Sdown
Dright
Actions
Mmute
Bhead bob
Ggait
Rreset
Zlook back
Cstars
Pcamera
Fbinoculars · hold
Tcamp
clickid sky
ESCsystem
SPACErest / shoot
Rest Mode · SPACE to enter
DRAGlook around
Wlook up
Slook down
Apan left
Dpan right
On-screen controls
✦ Sky & Weather (bottom centre) — force the weather or jump the time of day ·
? opens this hub · tap a plane, star or planet to identify it.
Field Guide · Discoveries
Everything the trail can reveal. ▶ plays a real Creative-Commons call.
Naturalist's Field Journal
—
Everything you've heard, seen, and photographed — logged where and when it happened. A logbook, not a score.
Field Catalog · Compound Phenomena
Rare compound moments documented on film — the camera (P) is the instrument. Collected, never unlocked.
Live Data Connections
Every feed is free, keyless, and fails soft. A feed that stays down auto-files a report for the overnight fix routine.