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The Dam Half and 4k

Mifflinburg, Pennsylvania, United States

calendar_today 27 Sep, 2026

directions_run Running

sell $35.00 – $68.00

About the Event

We are excited to share that this year we have added a 4K race option through the beautiful trails of RB Winter State Park. This distance is perfect for beginners who want to try trail running, as well as experienced runners who would like to enjoy a relaxed day on the trails with friends.

The Dam Half Trail Challenge has grown from a small race for hardcore trail runners into a popular, family-friendly event with a few hundred participants taking on the trails each year. Trail running has exploded in popularity, especially in central PA, where our diverse and high-quality races have even drawn national attention.

Profits from the races will be shared with the Friends of RB Winter State Park, helping support and preserve the trails we all love.

NOTE: To receive the gators and gloves you must register by Sunday, September 6. We need three weeks lead time for the supplier.

As always, great food, friends, and music after sharing the trails.

Races Offered

The Dam Half

Sep 27, 2026

straighten

Distance — 13.1 Miles

terrain

Type — Running

timer

08:00

sell

$68.00

The Dam 4 mile-ish

Sep 27, 2026

straighten

Distance — 4 Miles

terrain

Type — Running

timer

08:20

sell

$35.00

The Dam 4k

Sep 27, 2026

straighten

Distance — 4K

terrain

Type — Running

timer

08:20

Weather History

These values represent the 3-year monthly averages for September in Mifflinburg.

thermostat Temperature

13.6° / 23.7°

wb_sunny Feels like

13.2° / 23.2°

light_mode Avg sunshine hours

8h 54m

water_drop Avg rainfall

2.6 mm

ac_unit Avg snowfall

—

air Avg wind speed

6.8 km/h (Light breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.0)

humidity_mid Humidity

74.0%

wb_twilight Sunrise

06:49

nightlight Sunset

19:15

About Mifflinburg

Learn more about the host city, Mifflinburg.

Mifflinburg is a borough in Union County, Pennsylvania, United States. Located in the Susquehanna River Valley of central Pennsylvania, Mifflinburg was settled in 1792 by German immigrants.