2/28/26: Senior-Friendly Reverse Sprint Triathlon & 5K Run-Walk

Looking for an active senior fitness event in Southern California?

The UWS Race on the Base is a reverse sprint triathlon and 5K run/walk taking place at the Joint Forces Training Base in Los Alamitos, CA, on Saturday, February 28, 2026. This exciting and well-organized race welcomes active seniors, older adults, and multi-generational participants looking for a safe, motivating endurance event.

Participants can choose between a reverse triathlon for experienced senior athletes or a 5K run/walk ideal for seniors who want a lower-impact fitness challenge in a supportive environment.

Registration Information

Learn more here: https://www.raceonthebaselosal.com/

Reverse Sprint Triathlon Format

• 5K Run
• 13-mile Bike
• 200-meter Swim

Racing in reverse adds a unique challenge and energy to the day, all set on a secure and controlled military base course.

Senior-Friendly 5K Run/Walk Option

The 5K run/walk is a great choice for:

• Seniors new to endurance events
• Older adults returning to fitness
• Walkers, joggers, and competitive senior runners

Event Location

Joint Forces Training Base
11206 Lexington Dr
Los Alamitos, CA 90720

A secure, flat, and well-managed venue often preferred by senior participants.

Schedule of Events

Friday, February 27, 2026

Bib Pick-Up / Registration / Packet Pick-Up
3:00 pm – 7:00 pm
Joint Forces Training Base

Saturday, February 28, 2026

• 5:30 am – Bib Pick-Up / Registration / Packet Pick-Up
• 5:30 am – Transition Area Opens
• 7:00 am – Reverse Triathlon Wave 1 Start
• 7:15 am – 5K Run/Walk Start
• 8:30 am – Reverse Triathlon Wave 2 Start

Participants are strongly encouraged to arrive at least 1½ hours early for all events.

Important Event Policies

• No pets or motorhomes allowed on site
• No refunds or transfers
• Event takes place rain or shine

Why Seniors Love This Event

• Popular among active seniors, 50+ athletes, and older adult fitness groups
• Structured race timing and clear logistics
• Options for both competitive and recreational senior athletes
• Secure, low-traffic course

If you’re searching for a senior triathlon in California, a 5K walk for seniors near Los Alamitos, or an active adult fitness event in Orange County, the UWS Race on the Base offers a rewarding and energizing way to stay active in 2026.