# Marathon Races in Boise, ID (2026)

> 4 upcoming Marathon races in Boise, Idaho.

- **Page:** https://runthis.run/races/idaho/boise/marathon

## Races

- **[City of Trees Marathon](https://runthis.run/event/rs-131258-city-of-trees-marathon)** — Sun, Oct 11, 2026 · 12:00 AM UTC · Boise, ID · Marathon / 10K / 5K
- **[Idaho Running Day](https://runthis.run/event/rs-166758-idaho-running-day)** — Sat, Oct 17, 2026 · 12:00 AM UTC · Boise, ID · Marathon / 10K / 5K
- **[Boise River Marathon](https://runthis.run/event/rs-125745-boise-river-marathon)** — Sun, May 2, 2027 · 12:00 AM UTC · Boise, ID · Marathon / 10K / 5K
- **[YMCA Famous Idaho Potato Marathon & Fun Runs](https://runthis.run/event/rs-117176-ymca-famous-idaho-potato-marathon-fun-runs)** — Sat, May 15, 2027 · 12:00 AM UTC · Boise, ID · Marathon / 10K / 5K

## Nearby

- [All races in Boise, ID](https://runthis.run/races/idaho/boise.md)
- [Marathon races in Idaho](https://runthis.run/races/idaho/marathon.md)

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Source: [https://runthis.run/races/idaho/boise/marathon](https://runthis.run/races/idaho/boise/marathon) — data from Run This (runthis.run).