165 Miles Around Lake Tahoe: A Tahoe Rim Trail Story

Tahoe Rim Trail · 165-mile loop · 13 days · One phone, one charge bank, zero bars of signal

How do you prepare for a difficult task? I envision my future.

Before I wrote a single line of this app, I took the trip I most wanted to take — a complete loop around the largest alpine lake in North America — and I walked all 165 miles of it in my head. What would happen out there? Where would it go sideways? And, sitting at home with a keyboard instead of a trekking pole, what could I solve for today so that the version of me out on the trail would be ready for it? This article is the impetus for everything Backpackers Friend became — not a trip report, but the imagined journey I built the app from. Here is my vision.

Days 1–4: On top of everything

The Tahoe Rim Trail is a 165-mile loop that circles Lake Tahoe like a crown — Sierra Nevada granite on the west side, the drier, piney Carson Range on the east, and that absurd blue water below you almost the entire way. I started at Tahoe City heading clockwise on a July morning with thirteen days of food split across two resupplies, a 31-pound pack, and a plan I had built weeks earlier from my couch, entirely in the app: every campsite, water stop, and viewpoint saved as a waypoint, with the route between them snapped to the actual trail, because a route you planned yourself is one you actually understand when it matters.

The first four days were a pure gift. I walked through aspen groves on Brockway Summit and meadows of shoulder-high wildflowers below Mount Rose, and on day three I crossed the highest point of the entire trail near Relay Peak, just over 10,000 feet, with the whole lake laid out below me like a map of itself. I camped each night exactly where the plan said I would. Each evening I plugged the phone into my charge bank, read the next day's elevation profile like a weather forecast — fourteen miles, 2,300 feet of climbing, one reliable creek at mile nine — and then put on a movie to wind down. By day four I was convinced I had this trip completely figured out.

Day 5: The Carson Range collects its toll

The east side of the Tahoe Rim Trail is famously dry. Between Spooner Summit and Star Lake the springs go quiet, the creeks go to gravel, and every guidebook says the same thing: carry more water than you think you need. I knew this, and I left camp with four liters. What I had not planned for was waking up to find the phone at 31% and the charge bank completely dead. Sometime during the night I had fallen asleep partway through Interstellar, and the screen had run until there was nothing left to drain. On the morning of day five I packed up, accepted my situation, and did the only sensible thing: switched the app into battery-saver mode, which checks your position every thirty minutes instead of constantly.

Then the day got interesting. In the middle of the afternoon, in a burn scar where the trail braids through deadfall and every gap in the manzanita looks like a path, I followed the wrong one. About ten minutes in, my phone buzzed in my pocket: an off-trail alert. There was no signal and there had been none for two days, so this was the app itself, comparing my position against the planned route entirely on the device and finding me well past the 330-foot threshold. I stopped and pulled up the map. It opened on the cached topo tiles — full detail, zero bars — with my blue dot on the wrong side of a ridge spur and the red route line sitting there patiently, 140 yards to the east.

I was back on the trail within ten minutes, pleased with myself. In my relief I pushed the phone into my hip pocket without locking the screen, and by the time I noticed, it had been burning in there long enough to drop the phone from 31% to 19%.

Back on route, but down to 19% battery and one liter of water on the driest stretch of the whole loop, doing math I did not enjoy.

I felt the old cold-stomach feeling that every backpacker knows. It was not danger, exactly — it was arithmetic. Hours of light, liters of water, percent of battery, and not one of those numbers on my side.

Day 5, evening: Kingsbury

This is where the app earned its keep. I dealt with the water number first. The water layer — every spring and stream the app had pulled from OpenStreetMap when I planned the trip, cached on the phone — showed a reliable spring 1.3 miles ahead, just below the trail. I filled all four liters and kept moving.

The battery math had a solution I had not fully appreciated when I was standing in the burn scar: the trail crosses Kingsbury Grade a few miles further on, and Kingsbury Grade means Stateline, Nevada, and Stateline means hotels. I walked out of the wilderness that evening with the phone still clinging to the low teens — low, but alive — checked into the first place I found, plugged in the phone and the charge bank, sat on the edge of the bed in my dirty hiking clothes, and let out a breath that had been building since the burn scar that afternoon.

Then I took a shower, ate an embarrassing quantity of food, and spent a while just sitting with the charger cord in the wall and the screen ticking back up.

Here is the thing about battery-saver mode that is hard to explain until you are sitting in a hotel room grateful for it: it did not just save battery. It carried a phone I had carelessly half-killed through the driest stretch of a 165-mile loop, with no signal and no fallback, all the way to civilization. That is the moment I stopped thinking of this app as a convenience and started treating it as gear.

Day 6: Star Lake

I left Kingsbury the next morning with a full phone, a full charge bank, and one specific new habit: lock the screen before pocketing it. The trail climbed back into the Carson Range and the quiet returned. That evening I made camp under a full moon at Star Lake at 9,100 feet, the water still and cold and the whole basin to myself, and slept the way you sleep when there is nothing left to worry about.

Days 7–13: Around the lake and home

The rest of the loop paid the whole trip back with interest. I resupplied in South Lake Tahoe, crossed Desolation Wilderness in full granite-and- sapphire glory, and on day thirteen had the strange, grinning experience of walking back into Tahoe City from the opposite direction I had left it. I finished with 41% battery and a charge bank I had barely touched since Kingsbury. The real haul was the record: a complete GPS track of all 165 miles, per-mile splits, and every climb and descent graphed — the kind of trip data that makes the next one better. The gear list came home annotated by experience, including three pounds of "just in case" that never left the pack and will not make the next trip. The plan, the track, and the lessons all live in the same place now, and that is the part no paper map ever did for me.

The quiet math: what all of this cost

Everything that got me back to the trail that evening — the offline topo tiles, the off-trail alert, the cached water sources, the battery-saver GPS — is the Premium tier of Backpackers Friend, and it costs $2.99 a month, cancel any time, no contract. The dedicated GPS handheld I almost bought instead was $400 before the map subscription. The phone was already in my pocket. The planning, the waypoints, the route drawing, and the tracking itself are free.

And there is no catch hiding behind the price: the app has no account to create, no cloud, no analytics, and no server that ever sees your trips. Everything — the maps, the water data, the track, the gear list — lives on the phone. Which is exactly why it all kept working two days past the last cell tower.

Who I built it for

That imagined loop is the whole reason this app exists. Every problem I pictured out there — the dead battery on the dry side, the wrong turn in the burn scar, the spring I would need to find with no signal to look it up — became something I could solve for in advance, before anyone ever laced up their boots. I wanted to make an app that was friendly for college students, for working professionals, and for those looking for a better option.