Grapes of Wrath Triathlon, 5k & 10k Logo

Grapes of Wrath Triathlon, 5k & 10k

Sun, Apr 25, 2027
In 168 days
Delano, CA
32750 Woollomes Ave

On this date: rain 2 of the last 10 years

2026

53–67°F

rain

2025

52–72°F

dry

2024

51–74°F

dry

2023

54–83°F

dry

2022

52–88°F

dry

2021

52–65°F

rain

2020

62–93°F

dry

2019

65–98°F

dry

2018

62–92°F

dry

2017

54–74°F

dry

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About this race

What will you find at the Grapes of Wrath triathlon?

+ Finisher's Medal
+ Event T-Shirt
+ Finishers meal
+ Rosa Brother's Chocolate Milk
+ Free Race Photos


The Grapes of Wrath Triathlon is a fast and fun race in the central valley located east of Delano, CA. This event features a lake swim in Lake Woollomes, a fast and flat road bike course, and a run which is part trail and part paved finishes the race. Each athlete registered for the Grapes of Wrath Triathlon will receive a custom t-shirt, athlete goody bag, swim cap, post-race meal, and be eligible for raffle prizes and race awards three-deep in each division. Take the weekend and come up and enjoy this fun event with your family.

About the venue:

Three miles southeast of Delano, CA, nestled in the vinyards and orchards of the Central San Joaquin Valley is Lake Woollomes, a 300-acre reservoir with 4 miles of shoreline, making it a cozy location for water recreation.

Swimming is allowed here, making this destination perfect for hot summer days. There’s also a boat dock and a launch ramp for those wishing to take to the water. But, the use is restricted to non-powered boats, so only sailboats, SUPs, and kayaks can be used on the lake.  

This fast, flat course is the perfect place to get your next PR.

Note:
A USAT membership is required for the Triathlon, (but not the 5k/10k)  If you do not have one, you can purchase one during the registration process.

Course map

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