Campsite Odds

Booking odds · September

Sunset-Union Valley Campground in September: How Hard Is It to Book?

Sunset-Union Valley Campground · CA · Eldorado National Forest

The verdict

Easy

Booking difficulty 1 out of 10. Usually available — you can often book close to your trip.

Rarely sells outBased on 3 years of reservation data

September rarely sells out — you can often book close to your trip.

Sunset-Union Valley Campground in September scores 1 out of 10 for booking difficulty — easy. Usually available — you can often book close to your trip.

Based on the last 3 years of reservation history, with the campground running roughly 5% full that month. The lightest arrival day is Wednesday, so shifting to a midweek start is the single easiest way to improve your odds.

Lead time

How far ahead people book

Same day: 59% of bookings59%Same day1–3d: 4% of bookings1–3d4–7d: 3% of bookings4–7d1–2wk: 2% of bookings1–2wk2–4wk: 2% of bookings2–4wk1–2mo: 1% of bookings1–2mo2–3mo: 1% of bookings2–3mo3–6mo: 18% of bookings18%3–6mo6mo+: 11% of bookings11%6mo+Median booking lead time: 0 days ahead
Demand split

Weekend vs. weekday demand

Weekend (Fri–Sat)Weekday (Sun–Thu)

Best odds: arrivals are lightest on Wednesday in September. A midweek arrival is your easiest booking.

Booking window · September 2027

When September reservations open

Reservations for Sunset-Union Valley Campground in September 2027 operate on a rolling 6-month window releasing at 7:00 AM ET.

September 1 stays open

March 1, 2027

at 7:00 AM ET

Release style

6-Month Rolling Window

Releases daily 6 months ahead at 7:00 AM ET

Campsites for September 1, 2027 become bookable on March 1, 2027 at 7:00 AM ET. Each subsequent date throughout September releases day-by-day exactly 6 months prior to arrival.

Facility note: Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.

Fees

How much does it cost to camp at Sunset-Union Valley Campground?

Recreation Fee: Recreation fees are the fees a visitor pays for things like overnight camping, a day-use pavilion, group facilities, a tour or a permit. Recreation fees vary by location and/or activity. Reservation Fee: A fee may be charged at the time a reservation is made to cover the cost of reservation services. This fee is in addition to the Recreation Fee and is non-refundable. Fees for camping, day use, group sites, cabins and lookouts: $8 if made on-line; $9 if made through the call center; $3 if made in-person.

Fee details as listed on Recreation.gov. Rates and passes change by season, so confirm the current price on Recreation.gov before you book.

FAQ

Sunset-Union Valley Campground in September: common questions

How hard is it to book Sunset-Union Valley Campground in September?
Sunset-Union Valley Campground rates 1 out of 10 for September — Easy. Usually available — you can often book close to your trip.
When do September reservations open for Sunset-Union Valley Campground?
Reservations for Sunset-Union Valley Campground in September 2027 open on a rolling 6-month window. Sites for September 1 become bookable on March 1, 2027 at 7:00 AM ET, with each subsequent day releasing day-by-day 6 months ahead.
What is the best day to arrive at Sunset-Union Valley Campground in September?
Arrivals are lightest on Wednesday. A midweek arrival is usually the easiest booking.

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