
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.
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
Weather
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.
Host City
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
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Race Location
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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
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From Endurance Grid
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.
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.
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Plan your trip
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 GregoryFrequently Asked Questions (FAQs)
Swim to the Moon Open Water Swim Festival
Aug 16, 2026