We Watch. You Book.
Outdoorithm monitors campground availability 24/7 and sends you instant alerts when sold-out sites open up. You make the reservation directly on Recreation.gov or the park's official site.
Important: We don't book campsites for you. We're your early warning system — when a spot opens, we notify you so you can grab it yourself.
Your Personal Campsite Scout
We do the watching. You do the booking. Here's how our free notification system helps you land sold-out campsites.
Choose a Campground
Select the campground you want to visit. We support Recreation.gov and many state park systems.
Set Your Dates
Tell us when you want to camp. We'll start monitoring availability for those specific dates.
Get Notified Instantly
When a site opens up, we'll alert you via email, SMS, or push notification within seconds.
Book It Yourself
Click the link in your alert to go directly to the booking page. You complete the reservation on the official site.
Campsites Disappear Fast
When a cancellation opens up a prime campsite, you have minutes — sometimes seconds — before someone else books it. Our alerts give you the edge.
Nearly half of campsite reservations get cancelled
Thousands watch the same popular campgrounds
We scan for openings every two minutes
Notifications sent within seconds of availability
Our job is to find the opening and notify you instantly. Your job is to book it on the official site.
We're Your Lookout, Not Your Booking Agent
Outdoorithm is a notification service. We monitor campground availability and alert you when spots open up. The actual booking? That's all you.
What Outdoorithm Does
- Monitor 167,000+ campsites across the country
- Check for availability every 2 minutes, 24/7
- Send instant alerts via email, SMS, or push notification
- Include a direct link to the booking page in every alert
What Outdoorithm Does NOT Do
- Make reservations on your behalf
- Hold or reserve campsites for you
- Charge booking fees or commissions
- Guarantee you'll get the site (speed matters!)
Think of us as your 24/7 campsite spotter. When opportunity knocks, we make sure you hear it — but you're the one who answers the door.
EarlyBird Booking Calculator
Popular campgrounds open reservations months in advance. Our EarlyBird Calculator tells you exactly when booking opens so you can be ready the moment the window unlocks.
- Know your booking window
Find out exactly when reservations open for your trip dates
- Set your alarm
Get calendar reminders so you never miss opening day
Booking Window
Yosemite National Park
Ready to Stop Missing Out on
Perfect Campsites?
Set up your free alerts today. We'll watch for openings and notify you the moment a spot becomes available. You handle the booking on the official site.
Remember: We notify. You book directly on Recreation.gov or the park's official website.