Every mountain biker knows the frustration. You check the weather, load up the truck, drive 45 minutes to the trailhead, and find out the trails closed two hours ago. Nobody texted you. The Facebook post got buried. The website still says “Open” from yesterday.
fullsndr fixes this.
How It Works
fullsndr monitors trail websites every five minutes. When a trail status changes from Open to Closed (or back), every subscriber gets an instant SMS and email alert. No app to install. No social media to check. Just a text message when it matters.
Why It Exists
Trail closures protect the trails themselves. Riding on wet, saturated surfaces creates ruts, channels water, and accelerates erosion. A single wet ride on a jump line can cause $20,000+ in damage. Trail organizations close trails to protect the investment that volunteers and land managers have spent years building.
The problem is communication. Most trail parks rely on their website, Facebook, or word of mouth. By the time you hear about a closure, you might already be in the parking lot.
fullsndr bridges that gap. We watch the trail status so you do not have to.
What is Coming Next
The free tier gives you real-time alerts. The Pro tier ($5/month) adds predictive closures powered by Google DeepMind’s WeatherNext 2 ensemble forecasts, soil moisture levels, and historical closure patterns. Instead of knowing that trails ARE closed, you know when they are ABOUT to close and when they will reopen.
Sign up at fullsndr.com/signup to get started. Free forever for basic alerts.
Update: April 2026 - The Prediction Engine is Live
The Pro tier is no longer “coming soon.” As of this week, every Pro subscriber sees a 7-day forecast on every trail card, generated from 64-member WeatherNext 2 ensembles correlated against per-trail surface sensitivity. Headlines read like:
Open until Sunday 8:00 AM, then 42% closure risk for 18h
Read the full breakdown in Predicting Trail Closures with Google’s WeatherNext 2.
We’ve also expanded coverage from 4 trail systems to 21 across Alabama and Georgia, including Standing Boy, the CAMP-SORBA cluster (Chewacla, Tuskegee, Swayback Bridge), Tannehill, Oak Mountain, Red Mountain, Coldwater Mountain, Pine Mountain, Cheaha, DeSoto State Park, Monte Sano, Providence Canyon, and more. The trail directory at fullsndr.com/trails has the full list.