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The Napa Lapa Trail Adventure

calendar_today 08 Aug, 2026

directions_run Running

sell $95.00 – $200.00

About the Event

The Napa Lapa Trail Adventure returns to Skyline Wilderness Park in Napa, California on August 8th, offering runners the chance to explore its rolling hills for up to twelve hours. This event is Inside Trail Racing's first time-based run, allowing participants to complete as many laps around a challenging course as they can from 7:00 AM until 7:00 PM. Skyline Wilderness Park in Napa has been a cherished community asset since the late twentieth century and continues to host events that draw runners from across California.
On race morning at 7:00 AM, participants will gather on Imola Avenue for the start of their adventure through the trails of Skyline Wilderness Park. The park's terrain is characterized by hard and dry surfaces with significant elevation changes, making it a challenging yet rewarding course to tackle throughout the day. Runners should expect varying levels of difficulty as they navigate both large loops covering 4.1 miles each and short bursts on smaller circuits stretching just 0.34 miles in length.
The Napa Lapa Trail Adventure celebrates its roots deeply embedded within local history, originating from a grassroots effort to preserve land near the State Hospital for public use. Today, it supports numerous participants annually who come together not only to test their endurance but also to raise funds and awareness for various community causes through Inside Trail Racing events in California. This year’s race offers multiple categories including solo efforts and relay options to accommodate diverse runner preferences.
The Napa Lapa Trail Adventure features a variety of distance-based categories ranging from the intense twelve-hour challenge to shorter six- or three-hour commitments, each with their unique entry fees starting at $95 for the 3 Hour event. Participants can register online via [https://ultrasignup.com/register.aspx?did=133837](https://ultrasignup.com/register.aspx?did=133837). Bib pickup will take place on race day from 6:00 AM to 6:50 AM at the registration tent located near Imola Avenue. Runners should bring a photo ID and their confirmation email if applicable.
Race day in Napa is expected to feature moderate temperatures ranging between 15.3°C and 33.6°C, with an average humidity of approximately 55%, making for comfortable running conditions despite the high UV index indicating strong sun exposure during peak hours. The trail surface will be hard and dry without any rainfall anticipated throughout August 8th.
12 Hour
12 Hours  •  Start: 07:00:00  •  Fee: $185.00
12 Hour Relay
12 Hours  •  Start: 07:00:00  •  Fee: $200.00
6 Hour
6 Hours  •  Start: 07:10:00  •  Fee: $125.00
6 Hour Relay
6 Hours  •  Start: 07:10:00  •  Fee: $135.00
3 Hour
3 Hours  •  Start: 07:20:00  •  Fee: $95.00

On race day in Napa, participants can choose from several categories including a full twelve-hour challenge ($185.00), relay options for both the twelve-hour ($200.00) and six-hour events ($135.00 each team member), as well as shorter commitments of three hours at $95.00.
The Napa Lapa Trail Adventure in Skyline Wilderness Park, California will take place on August 8th, offering runners a unique opportunity to explore the park's challenging trails and contribute to local community causes through their participation. With its rich history rooted in community preservation efforts since the late twentieth century, this event remains an important gathering for endurance athletes seeking both personal achievement and communal support.

Races Offered

12 Hour

Aug 08, 2026

straighten

Distance — 12 Hours

terrain

Type — Running

timer

07:00

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$185.00

12 Hour Relay

Aug 08, 2026

straighten

Distance — 12 Hours

terrain

Type — Running

timer

07:00

sell

$200.00

6 Hour

Aug 08, 2026

straighten

Distance — 6 Hours

terrain

Type — Running

timer

07:10

sell

$125.00

6 Hour Relay

Aug 08, 2026

straighten

Distance — 6 Hours

terrain

Type — Running

timer

07:10

sell

$135.00

3 Hour

Aug 08, 2026

straighten

Distance — 3 Hours

terrain

Type — Running

timer

07:20

sell

$95.00

Weather History

These values represent the 3-year monthly averages for August in Napa.

thermostat Temperature
15.3° / 33.6°
wb_sunny Feels like
15.6° / 31.6°
light_mode Avg sunshine hours
12h 53m
water_drop Avg rainfall
ac_unit Avg snowfall
air Avg wind speed
6.1 km/h (Light breeze)
opacity Sweat loss rate
High
terrain Course conditions
Hard and dry surface
sunny Max UV Index
High (7.0)
humidity_mid Humidity
55.1%
wb_twilight Sunrise
06:24
nightlight Sunset
20:00

About Napa

Learn more about the host city, Napa.

Scenic view of

Napa is a city in the state of California, located 50 miles north of San Francisco, at the southern end of scenic Napa Valley.

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Hotels & Places to Stay

Video

Watch highlights and course previews from previous years.

Race Results

All-time top performances and historical records for The Napa Lapa Trail Adventure.

Place Name Year Time
🥇 Julie Herson '25 55.78
🥈 Leah McCarthy '25 51.62
🥉 Stephanie Ellis '25 47.8
4 Sue Lau '25 43.3
5 Alicia Mena '25 39.14

Runner Reviews

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