Newcastle

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Kirkland Turkey Trot

15 Nov 2026 · Kirkland

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12Ks of Christmas

13 Dec 2026 · Kirkland

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Kirkland Shamrock Run

13 Mar 2027 · Kirkland

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Triathlon Calendar near Newcastle 2026-2027

Monthly updates for Newcastle

Get new running races (and updates) in your inbox every month.

Explore the top triathlons near Newcastle for 2026-2027! We've gathered 4 exciting races in the area. Check out our detailed list below to find your next local race.

June 2027

Lake Wilderness Triathlon and Run

Maple Valley | 11 mi from Newcastle

Trail Run Triathlon Duathlon Sprint 0.25 13.76 5.5 mi Olympic 0.93 27.54 6.36 mi

Triathlon, duathlon and running events at Lake Wilderness Park featuring lake swims, rolling bike routes and trails along the Cedar River.

Triathlon, duathlon and running events at Lake Wilderness Park featuring lake swims, rolling bike routes and trails along the Cedar River.

Solstice Run - Seattle

Seattle | 9 mi from Newcastle

Duathlon 5 km 10 km 15 km

Seattle Solstice Run at Magnuson Park on June 19, 2027 offers 5k, 10k, 15k, a Kids Dash and a duathlon on a USATF certified 5k loop.

Seattle Solstice Run at Magnuson Park on June 19, 2027 offers 5k, 10k, 15k, a Kids Dash and a duathlon on a USATF certified 5k loop.

August 2027

Beaver Lake Triathlon

Sammamish | 8 mi from Newcastle

Triathlon Duathlon Aquathlon BLT Aquathon 1/4 swim, 13... 0.25 13.4 mi BLT Aquabike 1/4S, 13.4B 0.25 13.4 mi BLT Duathlon 13.4B, 4.3R 13.4 4.3 mi Full Triathlon1/4S 13.4B... 0.25 13.4 4.3 mi

A Beaver Lake triathlon featuring a 1/4 mile swim, a 13.4 mile bike on Duthie Hill, and a 4.3 mile run around the lake with USAT membership required.

A Beaver Lake triathlon featuring a 1/4 mile swim, a 13.4 mile bike on Duthie Hill, and a 4.3 mile run around the lake with USAT membership required.

September 2027

Newcastle Beach Triathlon

Newport | 2 mi from Newcastle

Triathlon Aquabike 1/4S, 13kB 0.25 mi 13 km Aquathon 1/4S, 13kB 0.25 mi 13 km Duathlon 13kB, 8kR 13 8 km Sprint 0.25 mi 13 8 km

Experience a USAT sanctioned sprint triathlon in Bellevue featuring a swim in Lake Washington and a scenic bike ride along the EASTRAIL trail.

Experience a USAT sanctioned sprint triathlon in Bellevue featuring a swim in Lake Washington and a scenic bike ride along the EASTRAIL trail.

Monthly updates for Newcastle

Get new running races (and updates) in your inbox every month.