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Swim to the Moon Open Water Swim Festival

Swim to the Moon Open Water Swim Festival is a swimming race on August 16, 2026 in Gregory, MI, with entry fees from $150 to $215.

Date
August 16, 2026 (24 days to go)
Price
$150–$215
Sport
Swimming
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From the Organizer

What is Swim to the Moon?

Swim to the Moon is an extraordinary open-water swimming adventure through the picturesque Hiland Chain of Lakes near Hell, Michigan. Choose your distance — .5 Mile, 1.2 Mile, 2.4 Mile, 5K, 10K or 15K — and have the time of your life swimming through Southeast Michigan’s most sublime waterways, all the while showing support for a very worthy cause: North Star Reach, a camp for children with life-threatening, serious, and chronic medical conditions.

The 5K swim starts on the shores of Patterson Lake at North Star Reach; from there, swimmers head south and east through the heavily forested Pinckney Recreation Area, passing through five lakes along the way. Scattered cottages are the only signs of civilization. The 5K will finish once they reach Halfmoon Lake Beach. 10K race participants start at Halfmoon Lake Beach, swim to the start of the 5K (where their “special needs” bags will be available), then turn around to head back to the shores of Halfmoon Lake Beach. The 15K race participants start on the shores of Patterson Lake at North Star Reach; from there, swimmers head south and east through the Hiland Chain of Lakes to Halfmoon Lake Beach where they will exit the water (where their "special needs" bags will be available), then head back to Patterson Lake Beach at North Star Reach where they will again, exit the water, access their special needs bags (if desired) and turn around to head back to Halfmoon Lake Beach for their finish. The .5 Mile, 1.2 mile, and 2.4 Mile swims start at Halfmoon Lake Beach. All events finish at the state beach on the east shore of Halfmoon Lake.

If you have a group, consider entering our team division!  High School Coaches/Captains: Please contact info@epicraces.com for a special group discount for your team!

This race is sanctioned by USMS. The USMS $20 one-event fee is built into the price.  If you are an annual member of USMS, $20 will be deducted from your race entry.

Events

10K: Full Moon$190
15K: Super Moon$215
5K: Half Moon$170
2.4 Mile: Waxing Gibbous Moon$170
1.2 Mile: Quarter Moon$150
.5 Mile: Gibbous Moon$150

Weather

Typical Conditions

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

81°

Typical Low

59°

Based on US Climate Normals data from Hell, 7 mi from the venue.

Sunrise 6:44 AMSunset 8:36 PMDaylight 13h 52m

Host City

About Gregory, MI

City Elevation

939 ft

Nearest Airport

LAN

Capital Region International Airport · 32 mi

Major Hub

DTW

Detroit Metropolitan Wayne County Airport · 42 mi

Time Zone

Eastern Time

From Endurance Grid

Line up lodging and travel early to lock in your race weekend.

Race Location

Your Next Start Line

What Are You
Waiting For?

Every finish line starts with a single decision. Claim your spot at Swim to the Moon Open Water Swim Festival, put it on the calendar, and turn “someday” into a start date.

24

Days to train

Race
Swim to the Moon Open Water Swim Festival
Date
August 16, 2026

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From Endurance Grid

About This Sport

Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.

Swimming events drop you into something that demands navigation, feel, and focus all at once. It's a sport that rewards the quietly competitive — the ones who do the work in the water before anyone's watching.

Read the Guide

Open Water Swimming

Open water races take place in lakes, rivers, bays, and oceans. Distances can run anywhere from a short 500m swim to 10K marathon events. Just you and the water.

Plan your trip

Make it a Racecation

Coming from out of town? There's more to Gregory than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.

Plan your trip to Gregory
Lodging
Flights
Rental Car
Activities

Frequently Asked Questions (FAQs)

What is the Swim to the Moon Open Water Swim Festival?+
Swim to the Moon Open Water Swim Festival is a swimming race held in Gregory, Michigan on August 16, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more swimming races near you or explore our sports guides to learn what race day actually feels like.
When and where is the Swim to the Moon Open Water Swim Festival?+
Sunday, August 16, 2026 in Gregory, Michigan at Halfmoon Lake. Check the event page for exact start times and wave schedules.
How do I register for the Swim to the Moon Open Water Swim Festival?+
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

Swim to the Moon Open Water Swim Festival

Aug 16, 2026

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