10 Upcoming Half Marathon Races Near Clackamas County, OR in October, 2026

2026 Portland Marathon

Portland, OR

Sunday, October 4th, 2026

Marathon

Half

View details for race 2026 Portland Marathon

Haunted 5K, 10K & 13.1M at Camas, WA (41)

Camas, WA

Saturday, October 10th, 2026

10K

Half

View details for race Haunted 5K, 10K & 13.1M at Camas, WA (41)

Silver Falls Trail Runs

Silverton, OR

Friday, October 16th, 2026

Marathon

Ultra

Trail

View details for race Silver Falls Trail Runs

2026 Columbia Gorge Marathon

Hood River, OR

Saturday, October 17th, 2026

Marathon

Half

View details for race 2026 Columbia Gorge Marathon

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Haunted 5K, 10K, 13.1M at Vancouver, WA (42)

Vancouver, WA

Saturday, October 17th, 2026

10K

Half

View details for race Haunted 5K, 10K, 13.1M at Vancouver, WA (42)

Silver Falls Trail Half Marathon

Silverton, OR

Sunday, October 18th, 2026

Half

Trail

View details for race Silver Falls Trail Half Marathon

Girlfriends Run

Vancouver, WA

Sunday, October 18th, 2026

10K

Half

View details for race Girlfriends Run

The Great Pumpkin Run

Portland, OR

Saturday, October 24th, 2026

Half

10K

View details for race The Great Pumpkin Run

Haunted 5K, 10K & 13.1M at Camas, WA (43)

Camas, WA

Saturday, October 24th, 2026

10K

Half

View details for race Haunted 5K, 10K & 13.1M at Camas, WA (43)

Medal Madness 5K, 10K, 13.1M at Vancouver, WA (44)

Vancouver, WA

Saturday, October 31st, 2026

10K

Half

View details for race Medal Madness 5K, 10K, 13.1M at Vancouver, WA (44)

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