Winter Trail Running Conditioning Series - 2025

Trail Running Course

Winter Trail Running Conditioning Series

Don’t let the dark winter months and rain get you down! Join us for progressive trail runs in December, January, and February. Explore new local trails and connect with other runners along the way.

This course aims to help participants develop their fitness and connect with other trail runners during the winter months. It is structured as a series of progressive frontcountry runs that will slightly increase in distance and/or elevation from Jan to Feb to Mar. 

Whether you are new to trail running or  an experienced runner, we invite you to join us to get out more in a friendly, group environment while challenging yourself, discovering new trails, and meeting other runners.

Graduation Requirements

  • Attend virtual or in-person course kick-off
  • Complete 2 course runs per month for Dec, Jan and Feb
  • Complete Low-Impact Recreation training and earn Low-Impact Recreation badge

Course Agenda

  • Virtual or In-Person Course Kick-off: Nov weekday evening
  • Dec: 4-6 miles with up to 2,000 ft elevation gain (complete 2)
  • Jan: 5-7 miles with up to 3,000 ft elevation gain (complete 2)
  • Feb: 6+ miles with up to 4,000 ft elevation gain (complete 2)
  • Mar: In-person graduation get-together (optional)
Course Requirements
Course Activity Date Availability Leader
Morning: December Winter Conditioning Runs: 4-6 miles (optional)
Cougar Mountain: Big Tree Ridge Trailhead
Fri, Dec 26, 2025
Registration closes Dec 25
0 participants
0 instructors
Little Si
Sun, Dec 28, 2025
Registration closes Dec 26
3 participants on waitlist
0 instructors
Evening: December Winter Conditioning Runs: 4-6 miles (optional)
Redmond Watershed Preserve
Tue, Dec 30, 2025
Registration closes Dec 27
3 participants on waitlist
0 instructors
Evening: January Winter Conditioning Runs: 5-7 miles (optional)
West Tiger Mountain No. 3
Thu, Jan 1, 2026
Registration closes Dec 30
0 participants
0 instructors
Redmond Watershed Preserve
Fri, Jan 2, 2026
Registration closes Dec 30
0 participants
0 instructors
Lake to Lake Trail and Greenway
Mon, Jan 5, 2026
Registration closes Jan 3
3 participants
0 instructors
Seward Park
Tue, Jan 6, 2026
Registration closes Jan 4
6 participants
0 instructors
Tiger Mountain Lowlands
Wed, Jan 7, 2026
Registration closes Jan 5
0 participants
0 instructors
Weowna Park
Thu, Jan 8, 2026
Registration closes Jan 6
2 participants
0 instructors
Alki Beach Park & Alki Point
Thu, Jan 8, 2026
Registration closes Jan 13
9 participants
0 instructors
Cougar Mountain: Terrace Trail Trailhead
Mon, Jan 12, 2026
Registration closes Jan 10
1 participant
0 instructors
Cougar Mountain: Big Tree Ridge Trailhead
Wed, Jan 14, 2026
Registration closes Jan 12
6 participants
0 instructors
Washington Park Arboretum
Fri, Jan 16, 2026
Registration closes Jan 14
0 participants
1 instructor
Bridle Trails to Marymoor Park
Tue, Jan 20, 2026
Registration closes Jan 18
1 participant
0 instructors
Discovery Park
Mon, Jan 26, 2026
Registration closes Jan 24
4 participants
0 instructors
Golden Gardens Park
Wed, Jan 28, 2026
Registration closes Jan 25
3 participants
0 instructors
Morning: January Winter Conditioning Runs: 5-7 miles (optional)
West Tiger Mountain No. 3 Cable Line
Sat, Jan 3, 2026
Registration closes Jan 1
1 participant
0 instructors
Dirty Harry's Peak, Balcony & East Balcony
Sun, Jan 4, 2026
Registration closes Jan 2
2 participants
0 instructors
Cougar Mountain: Sky Country Trailhead
Wed, Jan 7, 2026
Registration closes Jan 5
7 participants
0 instructors
West Tiger Mountain No. 3 Cable Line
Sat, Jan 10, 2026
Registration closes Jan 8
4 participants
0 instructors
Point Defiance Park
Sun, Jan 11, 2026
Registration closes Jan 9
8 participants
0 instructors
Carkeek Park
Mon, Jan 12, 2026
Registration closes Jan 17
7 participants
1 instructor
Tiger Mountain Lowlands
Tue, Jan 13, 2026
Registration closes Jan 11
4 participants
0 instructors
Magnuson Park
Wed, Jan 14, 2026
Registration closes Jan 12
6 participants
0 instructors
Paradise Valley Conservation Area
Sat, Jan 17, 2026
Registration closes Jan 15
3 participants
0 instructors
Cougar Mountain: Sky Country Trailhead
Sun, Jan 18, 2026
Registration closes Jan 16
5 participants
1 instructor
Teneriffe (Kamikaze) Falls
Sun, Jan 18, 2026
Registration closes Jan 16
1 participant
0 instructors
Cougar Mountain: Sky Country Trailhead
Wed, Jan 21, 2026
Registration closes Jan 19
6 participants
1 instructor
Squak Mountain: May Valley Access
Thu, Jan 22, 2026
Registration closes Jan 20
4 participants
0 instructors
Discovery Park
Fri, Jan 23, 2026
Registration closes Jan 23
8 participants
0 instructors
Soaring Eagle Regional Park
Sun, Jan 25, 2026
Registration closes Jan 7
6 participants on waitlist
0 instructors
Seward Park
Fri, Jan 30, 2026
Registration closes Jan 28
7 participants
1 instructor
Morning: February Winter Conditioning Run: 6+ miles (optional)
Golden Gardens
Mon, Feb 2, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
1 instructor
Around South Tiger Mountain
Tue, Feb 3, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
1 instructor
Squak Mountain: May Valley Access
Sat, Feb 7, 2026
Registration closes Feb 5
8 participants
1 instructor
Redmond Watershed Preserve
Sun, Feb 8, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
1 instructor
Golden Gardens
Mon, Feb 9, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
1 instructor
Bridle Trails to Marymoor Park
Fri, Feb 13, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
West Tiger Mountain 1-2-3
Sat, Feb 14, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Deception Pass State Park
Sun, Feb 15, 2026
Registration opens Jan 16; Instructor registration open now
8 participants
0 instructors
Lord Hill Regional Park
Sun, Feb 15, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
1 instructor
Squak Mountain: May Valley Access
Tue, Feb 17, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
0 instructors
Discovery Park, Locks & Golden Gardens
Fri, Feb 20, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
1 instructor
Cougar Mountain: Terrace Trail Trailhead
Sat, Feb 21, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Lord Hill Regional Park
Sun, Feb 22, 2026
Registration opens Jan 15; Instructor registration open now
9 participants
0 instructors
Washington Park Arboretum
Tue, Feb 24, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Green Lake (Seattle)
Sat, Feb 28, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
1 instructor
Evening: February Winter Conditioning Run: 6+ Miles (optional)
Cougar Mountain: Sky Country Trailhead
Mon, Feb 2, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Green Lake (Seattle)
Wed, Feb 4, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Poo Poo Point via High School Trail
Thu, Feb 5, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
0 instructors
Washington Park Arboretum
Mon, Feb 9, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
0 instructors
Issaquah-Preston Trail
Tue, Feb 10, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
1 instructor on waitlist
Sammamish River Trail
Mon, Feb 16, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
0 instructors
Washington Park Arboretum
Wed, Feb 18, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
1 instructor
West Tiger Mountain No. 3
Thu, Feb 19, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Discovery Park
Mon, Feb 23, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Point Defiance Park
Wed, Feb 25, 2026
Registration opens Jan 15; Instructor registration open now
8 participants
1 instructor
Licorice Fern Trail
Thu, Feb 26, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
0 instructors
Saint Edward, Big Finn Hill, McDonald Preserve & O.O. Denny
Fri, Feb 27, 2026
Registration opens Jan 15; Instructor registration open now
10 participants
1 instructor
Winter Trail Running Conditioning Graduation Celebration (optional)
Formula Brewing
Thu, Mar 12, 2026
Registration closes Mar 10
1 participant
1 instructor

Additional badges needed to graduate

Completed

Roster
Required Equipment

Please wear layers of breathable, technical clothing suitable for outdoor aerobic activities for this course's activities.

  • Waterproof jacket, hat, buff, gloves, sunglasses
  • Trail running shoes
  • A small day pack suitable for trail running
  • Bring snacks and water
  • Trail running-adapted ten essentials
  • Optional: poles, running micro-spikes, and running-specific gaiters
Course Materials

There are no materials for this course.