Upcoming Half Marathon Races in Idaho, US 2026-2027

CDA Marathon

Coeur d'Alene, ID

Saturday, May 23rd, 2026

Featured

Marathon

Half

10K

View details for race CDA Marathon

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Running for Children's Rights to Both Parents -...

Ashton, ID

Saturday, May 23rd, 2026

Half

5K

View details for race Running for Children's Rights to Both Parents - 6 of 50 Half Marathons in 50 States -

Redfish Lake Lodge Memorial Weekend Run

Stanley, ID

Saturday, May 23rd, 2026

1 Mile

5K

10K

View details for race Redfish Lake Lodge Memorial Weekend Run

Spirit of Magic Valley Half Marathon - 10K - 5K...

Twin Falls, ID

Saturday, June 6th, 2026

Half

10K

5K

Trail

View details for race Spirit of Magic Valley Half Marathon - 10K - 5K - Kids 1 Mile

Race the Wolf

Sandpoint, ID

Saturday, June 20th, 2026

Marathon

Half

1 Mile

Trail

View details for race Race the Wolf

Boise Marathon

Boise, ID

Saturday, June 20th, 2026

Marathon

Half

10K

View details for race Boise Marathon

ZD30 Commitment (1 Mile, 5K, and 10K, 1/2 Marat...

Boise, ID

Saturday, July 11th, 2026

1 Mile

5K

10K

View details for race ZD30 Commitment (1 Mile, 5K, and 10K, 1/2 Marathon)

Christmas 5K/10K/Half Marathon in July - Boise

Boise, ID

Saturday, July 11th, 2026

5K

10K

Half

View details for race Christmas 5K/10K/Half Marathon in July - Boise

Christmas 5K/10K/Half Marathon in July - Idaho ...

Idaho Falls, ID

Sunday, July 12th, 2026

5K

10K

Half

View details for race Christmas 5K/10K/Half Marathon in July - Idaho Falls

Mesa Falls Marathon

Ashton, ID

Saturday, July 18th, 2026

Marathon

Half

10K

BQ

View details for race Mesa Falls Marathon

Priest Lake Marathon

Priest Lake, ID

Saturday, September 19th, 2026

Marathon

Half

10K

View details for race Priest Lake Marathon

2026 Northwest Series - Day 5 (ID)

Lewiston, ID

Wednesday, September 23rd, 2026

Half

Marathon

5K

View details for race 2026 Northwest Series - Day 5 (ID)

2026 Northwest Series - Day 6 (ID)

Lewiston, ID

Thursday, September 24th, 2026

10K

Marathon

Half

View details for race 2026 Northwest Series - Day 6 (ID)

St. Luke's FitOne 5K/10K/Half Marathon

Boise, ID

Saturday, September 26th, 2026

5K

10K

Half

View details for race St. Luke's FitOne 5K/10K/Half Marathon

Hayden Lake Marathon

Hayden Lake, ID

Saturday, October 10th, 2026

Marathon

Half

10K

View details for race Hayden Lake Marathon

Rush Creek Stampede

Cambridge, ID

Saturday, October 10th, 2026

Half

5K

10K

View details for race Rush Creek Stampede

City of Trees Marathon

Boise, ID

Sunday, October 11th, 2026

Marathon

Half

10K

View details for race City of Trees Marathon

Idaho Running Day

Boise, ID

Saturday, October 17th, 2026

Marathon

Half

10K

View details for race Idaho Running Day

Haunted Half Marathon and 5k by Run the Undergrad

Rexburg, ID

Saturday, October 24th, 2026

5K

Half

View details for race Haunted Half Marathon and 5k by Run the Undergrad

Halloween Hustle

Coeur d'Alene, ID

Sunday, October 25th, 2026

Half

10K

5K

View details for race Halloween Hustle

ZD30 The Summit (1 Mile, 5K, and 10K, 1/2 Marat...

Boise, ID

Saturday, November 7th, 2026

1 Mile

5K

10K

View details for race ZD30 The Summit (1 Mile, 5K, and 10K, 1/2 Marathon, 30 Mile Ultra)

Boise Half Marathon

Boise, ID

Saturday, November 14th, 2026

Half

View details for race Boise Half Marathon

Race to Robie Creek®

Boise, ID

Saturday, April 17th, 2027

Half

View details for race Race to Robie Creek®

Boise River Marathon

Boise, ID

Sunday, May 2nd, 2027

Marathon

Half

10K

View details for race Boise River Marathon

Upcoming Half Marathon Races In Idaho, US