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PRR Summer Series 10K - Headwaters

location_on

calendar_today 13 Jun, 2026

directions_run Running

About the Event

The PRR Summer Series 10K - Headwaters returns to Moscow, Idaho on June 13th, offering runners a unique blend of scenic trails and community spirit in the heart of the Palouse region.
As dawn breaks over Moscow Mountain, the trailhead at Headwaters Trailhead comes alive with the anticipation of hundreds of participants. The route itself is well-trodden by locals who know every twist and turn like an old friend, yet it remains a mystery to newcomers eager to explore its beauty for themselves. This 10K run (technically just over five miles) weaves through dense forests and along winding paths that challenge even the most seasoned runners with nearly 700 feet of climbing elevation.
The Headwaters Trailhead is more than just a starting point; it's the heart of a community event that celebrates the spirit of running in Moscow. As participants gather early on race day, the air carries hints of pine and earth, mingling with laughter and chatter from runners sharing their training stories or simply enjoying pre-race camaraderie. The trail itself is both familiar and inviting, marked by well-worn paths under a canopy of trees that cast dappled shadows as the sun climbs higher in the sky.
This edition marks another chapter in the long-standing tradition of PRR Summer Series events, each one building on the success of its predecessors while maintaining an unwavering commitment to inclusivity and fun. Since its inception, this series has drawn crowds ranging from casual joggers to competitive runners looking for a challenging yet rewarding experience. The event is free, but donations are welcomed to support future races that continue to bring together the community in Moscow.
10k
10K  •  Start: 08:00:00

The logistics of participating are straightforward. Registration can be completed online at https://ultrasignup.com/register.aspx?did=138801, where runners will find all necessary information and deadlines clearly outlined. Carpooling is highly encouraged for those traveling from out-of-town to minimize environmental impact while maximizing social connections.
On the day of the race, bib pickup begins bright and early at 7:30 AM at Headwaters Trailhead in Moscow. Participants should arrive with a copy of their registration confirmation or an electronic version on their phone ready to present. The event is open to runners aged sixteen years and older due to safety concerns but welcomes all ages during the post-race festivities.
The start location, conveniently named Headwaters Trailhead, sits at the base of Moscow Mountain just off North 8th Avenue in downtown Moscow. As you approach from any direction, it's easy to spot the gathering crowd eager to begin their journey around the mountain trails. The race begins promptly at 8 AM sharp following a brief orientation where participants can ask questions and receive final instructions.
As June’s gentle breeze carries the promise of summer across Moscow Mountain, runners will experience conditions that are both challenging and refreshing. Temperatures typically hover in the mid-teens Celsius, with an average feel like temperature around sixteen degrees, making it ideal for comfortable running without overheating concerns. Wind speeds remain light but noticeable at eleven kilometers per hour, adding a slight resistance to your stride as you climb through fir-covered paths.
Humidity levels stay moderate during this time of year, ensuring that the air remains breathable and clear throughout each mile marker on the route. With only minimal chances for rain—averaging less than one millimeter—the trail conditions remain firm yet slightly soft underfoot, providing a balanced surface to test your endurance against natural inclines.
UV index levels are considered moderate in June at Moscow Mountain, suggesting that runners should wear sunscreen and sunglasses during their outing while enjoying the protective shade offered by tall trees throughout most of the course. Whether you're an avid participant or new to this annual celebration on Moscow Mountain trails, prepare yourself for a memorable run amidst stunning scenery and supportive community.
The PRR Summer Series 10K - Headwaters in Moscow, Idaho promises not just another race day but a cherished tradition that brings together runners from across the Palouse region under one trailhead banner.

Races Offered

10k

Jun 13, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

08:00

sell

$0.00

Weather History

These values represent the 3-year monthly averages for June in Moscow.

thermostat Temperature
11.5° / 21.7°
wb_sunny Feels like
8.1° / 18.5°
light_mode Avg sunshine hours
13h 32m
water_drop Avg rainfall
0.8 mm
ac_unit Avg snowfall
air Avg wind speed
11.5 km/h (Light breeze)
opacity Sweat loss rate
Moderate
terrain Course conditions
Firm and slightly soft
sunny Max UV Index
Moderate (5.6)
humidity_mid Humidity
49.5%
wb_twilight Sunrise
04:54
nightlight Sunset
20:41

About Moscow

Learn more about the host city, Moscow.

Scenic view of

Moscow is a city in North Central Idaho with a population of around 22,000 people, an agricultural center and the home of the University of Idaho. The surrounding area is generally referred to as the Moscow-Pullman area -- Pullman is a city in Washington, that is fairly symbiotic with Moscow. They are 8 mi (13 km) apart.

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Hotels & Places to Stay

Race Results

All-time top performances and historical records for PRR Summer Series 10K - Headwaters.

Place Name Year Time
🥇 Maximilian Antush '25 00:39:47
🥈 Gerrit Bass '22 00:40:46
🥉 Robert Ashabraner '22 00:40:47
4 Timothy Bartholomaus '22 00:42:43
5 Kaj Taylor '25 00:43:48

Runner Reviews

Read what other athletes have to say about their experience at the PRR Summer Series 10K - Headwaters.

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