Duathlon

Tenth Annual Laguna Vista "Du It By The Bay" Duathlon 2027

Date: Sunday, January 31, 2027
Start time: 8:00 AM start (Chicago)
Location: Port Isabel, Texas
Entry fee: From $65 · goes up to $70 on Dec 1, 2026
Included with entry: Includes a shirt

Registration is open.

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Official race website

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Events and entry fees

Event	Distance	When	Entry fee	Cap
Adult Individual	Duathlon	Jan 31, 20278:00 AM	$65$70 after Dec 1, 2026	170
Relay	DuathlonRelay or team	Jan 31, 20278:00 AM	$85$95 after Dec 1, 2026	170

Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.

The Duathlon fee goes up to $70 on Dec 1, 2026.

Race day planning

Entry fee schedule

Adult Individual: $65 until Dec 1, then $70 until Jan 2, then $80 until Jan 28.
Relay: $85 until Dec 1, then $95 until Jan 2, then $105 until Jan 28.

Online registration closes Jan 28, 2027, unless the race fills first.

Light and altitude

Sunrise on race morning is at about 7:14 AM, and the Adult Individual starts at 8:00 AM. The start sits about 0 feet above sea level.

Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.

Start location and course

Roloff Park, Port Isabel, TX 78578

Directions to the start

The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.

Where Tenth Annual Laguna Vista "Du It By The Bay" Duathlon ranks

No. 36 of 50 on Cheapest duathlons in the US

National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.

Typical race-day weather

Around January 31 the day usually runs from 56°F at dawn to 71°F in the afternoon, with measurable rain on about 17% of days. Cold snaps dip to 41°F and hot years reach 80°F.

Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.

Race details

Where: Roloff Park, Port Isabel, TX 78578Map
Course: Road
Start elevation: About 0 feet
Included with entry: T-Shirt
Distances: Duathlon
Editions: 2027 (Jan 31, 2027), 2026 (Jan 25, 2026), 2025 (Jan 26, 2025), 2024 (Jan 28, 2024), 2023 (Jan 29, 2023), 2022 (Jan 30, 2022)

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Quick answers

When is Tenth Annual Laguna Vista "Du It By The Bay" Duathlon?: Sunday, January 31, 2027, starting at 8:00 AM.
How much does it cost?: Entry starts at $65 before processing fees, and rises to $70 on Dec 1, 2026.
When does registration close?: Online registration closes Jan 28, 2027, unless the race fills first.
Do athletes get a shirt or medal?: Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
What distances are offered?: Duathlon.
Where does it start?: Roloff Park, Port Isabel, TX 78578.