Ultramarathons Summer 2026

Endurance Grid lists 28 ultramarathons in summer 2026 across 18 states.

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Showing 28 events

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July 2026 Ultra Races

13 upcoming Ultra races in July.

Races happening soon.

Endurance races happening in the next 7 days, in date order. Browse what’s coming up and sign up soon.

Jul

17–18

Fri–Sat

Ultra

High Lonesome 100

Co Rd 321, Nathrop, CO

100 Mile

Avg 84° / 50°·8,048 ft city elevation

Avg 84° / 50°8,048 ft city elevation

Jul

Sat

Ultra

JMC Running Co: 4-Hour Relay & Solo-Ultra Challenge

100 Academic Way, Phoenixville, PA

Avg 88° / 67°·169 ft city elevation

Avg 88° / 67°169 ft city elevation

Jul

Sat

Running

Carolina Reaper Challenge (50k - 13.1 - 10k & Relay)

2959 New Easley Hwy, Greenville, SC

8K / 5 Mile · Half Marathon · 50K

Avg 91° / 72°·927 ft city elevation

Avg 91° / 72°927 ft city elevation

Jul

Sat

Ultra

Last Airman Standing

Flight line, Malmstrom A F B, MT

Avg 87° / 56°

Jul

18–19

Sat–Sun

Running

Full Moon 25k/50k

Perryville, AR

50K

Avg 90° / 70°·281 ft city elevation

Avg 90° / 70°281 ft city elevation

Jul

18–19

Sat–Sun

Running

Survive the Night Relays

Kroger Field, 1540 University Drive, Lexington, KY

Marathon · 50 Mile · 100 Mile

Avg 87° / 67°·994 ft city elevation

Avg 87° / 67°994 ft city elevation

+ 1 more happening in the next 7 days below — keep scrolling.

Jul

18–19

Sat–Sun

Running

CandleLight 12/24 Hour - Overnight Ultra and Relays

Rochester Rotary Sunshine Camp, Rush, NY

Avg 82° / 60°·579 ft city elevation

Avg 82° / 60°579 ft city elevation

Jul

23–25

Thu–Sat

Ultra

Washington Island Ultra

Washington Island, Washington Island, WI

Avg 76° / 58°·680 ft city elevation

Avg 76° / 58°680 ft city elevation

Jul

24–26

Fri–Sun

Ultra

Never Summer 100km & 60km

58998 CO-14, Walden, CO

100K · 100 Mile · Ultra

Avg 77° / 39°·8,069 ft city elevation

Avg 77° / 39°8,069 ft city elevation

Jul

Sat

Ultra

Last Man Standing Lake Placid

31 Van Hoevenberg Way, Lake Placid, NY

Avg 74° / 54°·1,788 ft city elevation

Avg 74° / 54°1,788 ft city elevation

Jul

Sat

Running

Lost Turkey Trail Races

124 Park Rd, Imler, PA

10K · Half Marathon · 50K

Avg 86° / 60°·1,177 ft city elevation

Avg 86° / 60°1,177 ft city elevation

Jul

25–26

Sat–Sun

Running

Hawaii Kai Ultra Run XTreme 2026

555 Kealahou St, Honolulu, HI

Half Marathon · Marathon · 50K · 50 Mile · 100K · 100 Mile

Avg 80° / 70°·199 ft city elevation

Avg 80° / 70°199 ft city elevation

Jul

Sun

Ultra

World Championship Pack Burro Race

531 Front Street, Fairplay, CO

50K

Avg 71° / 43°·9,941 ft city elevation

Avg 71° / 43°9,941 ft city elevation

August 2026 Ultra Races

15 upcoming Ultra races in August.

Aug

Sat

Running

Sheep Mountain Trail Runs

Platte Drive, Fairplay, CO

Ultra

Avg 71° / 43°·9,941 ft city elevation

Avg 71° / 43°9,941 ft city elevation

Aug

Sat

Running

El Vaquero Loco

Cottonwood Lake, Afton, WY

50K

Avg 82° / 45°·6,175 ft city elevation

Avg 82° / 45°6,175 ft city elevation

Aug

Sat

Ultra

DURTY B-EE-RR-UN 6hr Fat Ass Ultra

12615 102nd Ave N, Seminole, FL

100 Mile

Avg 91° / 76°·14 ft city elevation

Avg 91° / 76°14 ft city elevation

Aug

1–2

Sat–Sun

Running

Loopy Looper

5300 N Park Drive, Pennsauken, NJ

4 Mile · 100 Mile

Avg 86° / 68°·56 ft city elevation

Avg 86° / 68°56 ft city elevation

Aug

Fri

Ultra

Anchor Down Ultra

Colt State Park, Bristol, RI

Avg 85° / 65°·113 ft city elevation

Avg 85° / 65°113 ft city elevation

Aug

Sat

Running

Eddy Trail Races

5750 Porter Ave NW, Annandale, MN

Half Marathon · 50K

Avg 79° / 59°·1,049 ft city elevation

Avg 79° / 59°1,049 ft city elevation

Aug

Sat

Ultra

Watershed Endurance 6Hr/3Hr Runs

1591 Tower Ave, Edwardsville, IL

1 Mile

Avg 87° / 68°·527 ft city elevation

Avg 87° / 68°527 ft city elevation

Aug

Sun

Running

Another Dam 50k & 25k

100 E. National Rd., Englewood, OH

50K

Avg 85° / 65°·968 ft city elevation

Avg 85° / 65°968 ft city elevation

Aug

21–23

Fri–Sun

Running

Habanero Hundred

5389 Mill Creek Rd., Cat Spring, TX

10K · Half Marathon · Marathon · 50K · 100K · 100 Mile · Ultra

Avg 95° / 73°·258 ft city elevation

Avg 95° / 73°258 ft city elevation

Aug

Sat

Ultra

Falls & Forest 12‑Hour Challenge

100 Saunders Spring Ln, Radcliff, KY

50K · 100K

Avg 85° / 64°·739 ft city elevation

Avg 85° / 64°739 ft city elevation

Aug

22–23

Sat–Sun

Ultra

Dog Days ULTRA

3500 North Ave W, Missoula, MT

Avg 82° / 50°·3,168 ft city elevation

Avg 82° / 50°3,168 ft city elevation

Aug

Sun

Running

Nocterra Quitter's Run presented by Brooks

41 Depot St, Powell, OH

5K · 10K · Half Marathon · Marathon

Avg 83° / 61°·926 ft city elevation

Avg 83° / 61°926 ft city elevation

Aug

Sat

Ultra

The Next Loop 40M/50M Challenge | Half Day Forest Preserve

24255 N Highway 21, Vernon Hills, IL

50 Mile

Avg 79° / 59°·706 ft city elevation

Avg 79° / 59°706 ft city elevation

Aug

29–30

Sat–Sun

Ultra

Ocean State Ultra

145-151 Division Rd, West Greenwich, RI

100 Mile

Avg 80° / 59°·399 ft city elevation

Avg 80° / 59°399 ft city elevation

Aug

29–30

Sat–Sun

Running

Moonlight on the Falls - Marathon, Half Marathon, Quarter Marathon, and Distance Challenge

Davis, WV

10K · Half Marathon · Marathon

Avg 72° / 54°·3,670 ft city elevation

Avg 72° / 54°3,670 ft city elevation

Frequently Asked Questions (FAQs)

What ultramarathons are happening in summer 2026?+

Endurance Grid's Race Calendar lists 28 upcoming ultramarathons in summer 2026 across 18 states in the US.

Which states have the most ultramarathons in summer 2026?+

The states with the most ultramarathons in summer 2026 are Colorado, Illinois, Ohio, Kentucky, Montana, and New York.

How current is this summer ultramarathons calendar?+

This page refreshes every day and always shows the next summer, so the ultramarathons coming up never go stale.

Filter by

Showing 28 events

▾

July 2026 Ultra Races

13 upcoming Ultra races in July.

Races happening soon.

Endurance races happening in the next 7 days, in date order. Browse what’s coming up and sign up soon.

Jul

17–18

Fri–Sat

Ultra

High Lonesome 100

Co Rd 321, Nathrop, CO

100 Mile

Avg 84° / 50°·8,048 ft city elevation

Avg 84° / 50°8,048 ft city elevation

Jul

Sat

Ultra

JMC Running Co: 4-Hour Relay & Solo-Ultra Challenge

100 Academic Way, Phoenixville, PA

Avg 88° / 67°·169 ft city elevation

Avg 88° / 67°169 ft city elevation

Jul

Sat

Running

Carolina Reaper Challenge (50k - 13.1 - 10k & Relay)

2959 New Easley Hwy, Greenville, SC

8K / 5 Mile · Half Marathon · 50K

Avg 91° / 72°·927 ft city elevation

Avg 91° / 72°927 ft city elevation

Jul

Sat

Ultra

Last Airman Standing

Flight line, Malmstrom A F B, MT

Avg 87° / 56°

Jul

18–19

Sat–Sun

Running

Full Moon 25k/50k

Perryville, AR

50K

Avg 90° / 70°·281 ft city elevation

Avg 90° / 70°281 ft city elevation

Jul

18–19

Sat–Sun

Running

Survive the Night Relays

Kroger Field, 1540 University Drive, Lexington, KY

Marathon · 50 Mile · 100 Mile

Avg 87° / 67°·994 ft city elevation

Avg 87° / 67°994 ft city elevation

+ 1 more happening in the next 7 days below — keep scrolling.

Jul

18–19

Sat–Sun

Running

CandleLight 12/24 Hour - Overnight Ultra and Relays

Rochester Rotary Sunshine Camp, Rush, NY

Avg 82° / 60°·579 ft city elevation

Avg 82° / 60°579 ft city elevation

Jul

23–25

Thu–Sat

Ultra

Washington Island Ultra

Washington Island, Washington Island, WI

Avg 76° / 58°·680 ft city elevation

Avg 76° / 58°680 ft city elevation

Jul

24–26

Fri–Sun

Ultra

Never Summer 100km & 60km

58998 CO-14, Walden, CO

100K · 100 Mile · Ultra

Avg 77° / 39°·8,069 ft city elevation

Avg 77° / 39°8,069 ft city elevation

Jul

Sat

Ultra

Last Man Standing Lake Placid

31 Van Hoevenberg Way, Lake Placid, NY

Avg 74° / 54°·1,788 ft city elevation

Avg 74° / 54°1,788 ft city elevation

Jul

Sat

Running

Lost Turkey Trail Races

124 Park Rd, Imler, PA

10K · Half Marathon · 50K

Avg 86° / 60°·1,177 ft city elevation

Avg 86° / 60°1,177 ft city elevation

Jul

25–26

Sat–Sun

Running

Hawaii Kai Ultra Run XTreme 2026

555 Kealahou St, Honolulu, HI

Half Marathon · Marathon · 50K · 50 Mile · 100K · 100 Mile

Avg 80° / 70°·199 ft city elevation

Avg 80° / 70°199 ft city elevation

Jul

Sun

Ultra

World Championship Pack Burro Race

531 Front Street, Fairplay, CO

50K

Avg 71° / 43°·9,941 ft city elevation

Avg 71° / 43°9,941 ft city elevation

August 2026 Ultra Races

15 upcoming Ultra races in August.

Aug

Sat

Running

Sheep Mountain Trail Runs

Platte Drive, Fairplay, CO

Ultra

Avg 71° / 43°·9,941 ft city elevation

Avg 71° / 43°9,941 ft city elevation

Aug

Sat

Running

El Vaquero Loco

Cottonwood Lake, Afton, WY

50K

Avg 82° / 45°·6,175 ft city elevation

Avg 82° / 45°6,175 ft city elevation

Aug

Sat

Ultra

DURTY B-EE-RR-UN 6hr Fat Ass Ultra

12615 102nd Ave N, Seminole, FL

100 Mile

Avg 91° / 76°·14 ft city elevation

Avg 91° / 76°14 ft city elevation

Aug

1–2

Sat–Sun

Running

Loopy Looper

5300 N Park Drive, Pennsauken, NJ

4 Mile · 100 Mile

Avg 86° / 68°·56 ft city elevation

Avg 86° / 68°56 ft city elevation

Aug

Fri

Ultra

Anchor Down Ultra

Colt State Park, Bristol, RI

Avg 85° / 65°·113 ft city elevation

Avg 85° / 65°113 ft city elevation

Aug

Sat

Running

Eddy Trail Races

5750 Porter Ave NW, Annandale, MN

Half Marathon · 50K

Avg 79° / 59°·1,049 ft city elevation

Avg 79° / 59°1,049 ft city elevation

Aug

Sat

Ultra

Watershed Endurance 6Hr/3Hr Runs

1591 Tower Ave, Edwardsville, IL

1 Mile

Avg 87° / 68°·527 ft city elevation

Avg 87° / 68°527 ft city elevation

Aug

Sun

Running

Another Dam 50k & 25k

100 E. National Rd., Englewood, OH

50K

Avg 85° / 65°·968 ft city elevation

Avg 85° / 65°968 ft city elevation

Aug

21–23

Fri–Sun

Running

Habanero Hundred

5389 Mill Creek Rd., Cat Spring, TX

10K · Half Marathon · Marathon · 50K · 100K · 100 Mile · Ultra

Avg 95° / 73°·258 ft city elevation

Avg 95° / 73°258 ft city elevation

Aug

Sat

Ultra

Falls & Forest 12‑Hour Challenge

100 Saunders Spring Ln, Radcliff, KY

50K · 100K

Avg 85° / 64°·739 ft city elevation

Avg 85° / 64°739 ft city elevation

Aug

22–23

Sat–Sun

Ultra

Dog Days ULTRA

3500 North Ave W, Missoula, MT

Avg 82° / 50°·3,168 ft city elevation

Avg 82° / 50°3,168 ft city elevation

Aug

Sun

Running

Nocterra Quitter's Run presented by Brooks

41 Depot St, Powell, OH

5K · 10K · Half Marathon · Marathon

Avg 83° / 61°·926 ft city elevation

Avg 83° / 61°926 ft city elevation

Aug

Sat

Ultra

The Next Loop 40M/50M Challenge | Half Day Forest Preserve

24255 N Highway 21, Vernon Hills, IL

50 Mile

Avg 79° / 59°·706 ft city elevation

Avg 79° / 59°706 ft city elevation

Aug

29–30

Sat–Sun

Ultra

Ocean State Ultra

145-151 Division Rd, West Greenwich, RI

100 Mile

Avg 80° / 59°·399 ft city elevation

Avg 80° / 59°399 ft city elevation

Aug

29–30

Sat–Sun

Running

Moonlight on the Falls - Marathon, Half Marathon, Quarter Marathon, and Distance Challenge

Davis, WV

10K · Half Marathon · Marathon

Avg 72° / 54°·3,670 ft city elevation

Avg 72° / 54°3,670 ft city elevation