
Grapes of Wrath Triathlon, 5k & 10k is a triathlon, aquabike, duathlon, running, and swimrun race on April 25, 2027 in Delano, CA, with entry fees from $50 to $200.
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.
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
78°
Typical Low
51°
Chance of Rain
9%
Based on US Climate Normals data from Delano, 5 mi from the venue.
Population
50,835
as of 2023
City Elevation
313 ft
Nearest Airport
BFL
Meadows Field · 26 mi
Major Hub
FAT
Fresno Yosemite International Airport · 74 mi
Time Zone
Pacific Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Every finish line starts with a single decision. Claim your spot at Grapes of Wrath Triathlon, 5k & 10k, put it on the calendar, and turn “someday” into a start date.
217
Days to train
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This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.
A swim followed by a bike — a triathlon without the run. Sprint and Olympic distances, often alongside a tri at the same venue.
Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
A continuous race alternating open-water swimming and running across a series of segments. Distances, format, and legs vary by event.
Grapes of Wrath Triathlon, 5k & 10k
Apr 25, 2027