JP's Backyard Ultra/Hike, The Final Edition
JP's Backyard Ultra/Hike, The Final Edition logo

2025 - JP's Backyard Ultra/Hike, The Final Edition

Napa, California, United States View on map
Sep 27, 2025 (America/Los_Angeles local time)
Trail running

2025 distances

Trail running

JP's Backyard Ultra & Hike

This will be the third year of this event that benefits the Pheo Para Alliance a 501(c)(3) Public Charity EIN 26-1510652 www.pheopara.org. The Pheo Para Alliance supports research of paraganglioma, a very rare form of terminal cancer that afflicts Jonathan Pascual, our event founder and Race Director. JP’s Big Backyard Ultra is run on a 5k loop at Skyline Wilderness Park in Napa, CA. Starting at 8am, each hour participants will start a new loop on the course with the race ending at 6pm. Throughout the day there will be raffle drawings of various donated merchandise to add to fundraising totals achieved by asking participants to donate directly to the Pheo Para Alliance. There is also a silent auction of donated merchandise to benefit our charity. All prizes, food and beverages at the event are donated, either by Jonathan or his friends and family, or local vendors during this 10 hour event. **The course features a 3.3 mile loop with 550+ feet of climbing, offering a mix of terrain from steep rocky sections to shaded paths. **Participants can choose anywhere from 1 to 10 loops. **Runners and hikers alike start at the same time every hour going clockwise on the even hours and counterclockwise on the odd hours. So it doesn't matter if you finish your loop fast or slow because everyone starts again at the same time in the next hour. Those attempting 10 loops should pace themselves for a final race on the 10th loop making 33.3 miles. You can do as many or as few loops as you wish however. **Timed Event: 8:00 AM - 6:00 PM **Aid Station: Main camp various caloric options and drinks with water only at the bridge and mile 2.3. **Food & Beverages: Provided, including lunch for participants and volunteers. **Cupless Event: Bring your own water bottle or hydration pack **Awards: Medals to all participants; Medal & wine (non-alconolic option for those under 21) for top 3 finishers of 2, 4, 6, 8 loops. Medal, wine, and trophy for the top 3 male and female finishers and special Vinerunner 4th trophy for male & female fourth place finisher. **Raffle Prizes: buy tickets on day of event to win raffle baskets, gift certificates, and other special prizes. Proceeds benefit the Pheo Para Alliance. **Registration "Fee": JP's Backyard Ultra has always been a free event. This year, to streamline registration, we are using runsignup.com. A $20 donation to the Pheo Para Alliance is suggested. There is $0.80 processing fee that goes to RaceSignup. Please consider giving an additional donation at the fundraising link. **Parking: Do not park at main parking lot to avoid parking fee; Follow signs for "JP's Backyard Ultra Parking" for free parking for registered participants at the Westside parking lot of Skyline Park. **Childcare: We have volunteers to watch your kids from 0800-1200. **Park Rules: No dogs on trails, stay on marked trails, carry out your trash & put in appropriate bins at the main aid station, trails close at sunset.

Sep 27, 2025 Ultra 8:00 AM
Free
Closed

Race-day weather

Conditions on September 27, 2025 — historical Open-Meteo data.

Temp (°C)
Minimum temperature (recorded on race day) 14.0° / Maximum temperature (recorded on race day) 23.2°
Feels Like (°C)
Minimum feels like — heat index / wind chill (recorded on race day) 14.0° / Maximum feels like — heat index / wind chill (recorded on race day) 23.2°
Peak wind (km/h)
Strongest wind of the day (recorded on race day)
16.8
Precip (mm)
Precipitation over the day (recorded on race day)
0.0mm
Humidity
Mean relative humidity (recorded on race day)
79.0%
Sunrise
Sunrise at the start line on September 27, 2025 (PDT)
Sunset
Sunset at the start line on September 27, 2025 (PDT)
Daylight
Hours between sunrise and sunset on race day
11h 56m

The sun rises at 7:01 AM and sets at 6:58 PM local time (PDT) in Napa on September 27, 2025 — 11h 56m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 7 Napa events

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