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Triathlon Calendar near Rancho Mission Viejo 2025-2026

Explore the top triathlons near Rancho Mission Viejo for 2025-2026! We've gathered 29 exciting races in the area. Check out our detailed list below to find your next local race.

March 2025
Mar
22
Saturday

Hawk Flight 5K

5 km
Mar
29
Saturday

The Wildomar 5k Race

5 km
Mar
30
Sunday

Phoenix Rising Half Marathon - Anaheim

5 km 10 km 15 km 13 mi
April 2025
Apr
5
Saturday

Rock It in El Moro Canyon

Trail Run 10 mi
Apr
5
Saturday

Ironman 70.3 Oceanside

Triathlon
Apr
6
Sunday

Carlsbad 5000

5 km 20 km
Apr
6
Sunday

Cal Tri Lake Perris

Triathlon
Apr
12
Saturday

Machete Trail Madness 100K

Trail Run 10 km 50 km 100 km
Apr
12
Saturday

OC Trail Runners Group Run

Trail Run
Apr
13
Sunday

Mile Square Madness Half Marathon

5 km 10 km 13 mi
Apr
19
Saturday

SoCal Deka Fit

Obstacle Run 5 km
Apr
19
Saturday

The Rabbit Run 5k

5 km
Apr
20
Sunday

Happy Easter Half Marathon - Irvine

Apr
26
Saturday

Running Is For The Birds

5 km 10 km
Apr
26
Saturday

Dream Run

3 km 5 km
Apr
26
Saturday

Orange County Superhero 5K

5 km
Apr
26
Saturday

Saddleback Marathon

Trail Run 10 km 13 mi 26 mi
Apr
26
Saturday

Move4U 5K Run/Walk

Apr
27
Sunday

Orange County International Triathlon

Triathlon
May 2025
May
2-3
Fr - Sa

Run4Kids Ultra Running Party

Backyard Ultra 26 mi 6 hr ... 100 mi 24 hr
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