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BIRR Monster Mash Mile Fun Run

Hilo, Hawaii, United States

calendar_today 31 Oct, 2026

directions_run Running

language Official Website

sell $10.00

About the Event

Come Join us for the second Annual Monster Mash Mile Fun Run. Looking to test your speed or just enjoy a morning stroll. Then come join us for our Monster Mash Mile in Downtown Hilo at Wailoa State Park. *** Wear your best costume in celebration of Halloween:)

*Date: October 31, 2026 with a 9:00 am start for the 1 mile event and 9:30 am start for the kid’s shorter distance race.

**Location: Wailoa State Park in Downtown Hilo, Pavilion 2.

***Awards: top 3 male and female mile times. Top 1 of Best Costume male and female. Top 1 of stroller male and female. All kids will receive a prize for the kids race.

****Fees: Free for BIRR members and kids12 years and under (fee will drop off in the registration) / $10 donation for non-members.

***Note the "kids" race for those 12 and under will be a 400 yard event:)

** Snacks and water provided.

* Co-Sponsored with Hilo Run Club

Races Offered

BIRR Monster Mash Fun Run - 12 years and under.

Oct 31, 2026

straighten

Distance — 400 Yards

terrain

Type — Running

timer

09:00

sell

$0.00

BIRR Monster Mash Mile Fun Run

Oct 31, 2026

straighten

Distance — 1 Miles

terrain

Type — Running

timer

09:00

sell

$10.00

Weather History

These values represent the 3-year monthly averages for October in Hilo.

thermostat Temperature

20.0° / 26.9°

wb_sunny Feels like

20.9° / 28.1°

light_mode Avg sunshine hours

10h 4m

water_drop Avg rainfall

3.9 mm

ac_unit Avg snowfall

—

air Avg wind speed

7.4 km/h (Light breeze)

opacity Sweat loss rate

High

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Moderate (4.8)

humidity_mid Humidity

77.3%

wb_twilight Sunrise

06:15

nightlight Sunset

17:56

About Hilo

Learn more about the host city, Hilo.

Hilo is a town on the Big Island of Hawaii. The county seat and largest city in Hawaii County, Hilo is the one of the best starting points to explore the eastern half of the island, including Hawaii Volcanoes National Park.

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BIRR Monster Mash Mile Fun Run

About the Event

Come Join us for the second Annual Monster Mash Mile Fun Run. Looking to test your speed or just enjoy a morning stroll. Then come join us for our Monster Mash Mile in Downtown Hilo at Wailoa State Park. *** Wear your best costume in celebration of Halloween:)

*Date: October 31, 2026 with a 9:00 am start for the 1 mile event and 9:30 am start for the kid’s shorter distance race.

**Location: Wailoa State Park in Downtown Hilo, Pavilion 2.

***Awards: top 3 male and female mile times. Top 1 of Best Costume male and female. Top 1 of stroller male and female. All kids will receive a prize for the kids race.

****Fees: Free for BIRR members and kids12 years and under (fee will drop off in the registration) / $10 donation for non-members.

** Snacks and water provided.

Races Offered

BIRR Monster Mash Fun Run - 12 years and under.

BIRR Monster Mash Mile Fun Run

Weather History

About Hilo

Hotels & Places to Stay

Runner Reviews

No reviews yet

Nearby Races

B.I.R.R. Turkey Trot 5K 2025

IRONMAN World Championship Kona - Men

100% Pure Kona Coffee Half Marathon & 5k

Stomp Out Hunger 5k Run and 1Mile Walk

Recommended for You

Hibiscus Half Marathon, 15K and 5 Miler 2027

2027 Aloha Series - Day 1

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