Grandmaster Ultras 2026
- Date Fri 27th February 2026 - Sun 1st March 2026
- Time 7:00AM PST
- Location Mesquite, Nevada
- Price $149.40 - $250.10
- Races 4 races
- Distances Ultra
Event summary
Get ready for an exhilarating adventure at the Grandmaster Ultras 2026, happening from February 27 to March 1, 2026, in the stunning desert landscapes of Mesquite, Clark, Arizona! This exciting ultramarathon event offers a variety of race distances, including a challenging 100 miles, a thrilling 100K, and two exciting options for shorter distance lovers: the 50K and 50-mile races. Each race provides a unique opportunity to explore the breathtaking scenery along miles of ATV trails, with the 100-mile and 100K runners enjoying a generous 48-hour cutoff, while the 50K and 50-mile participants will have 24 hours to complete their journeys.
The main course features the iconic Thelma Louise loop, ensuring competitors experience both exhilarating climbs and beautiful vistas. With ample support from aid stations and the option to have pacers, especially for runners over 70, camaraderie and encouragement abound. Whether you're a seasoned ultrarunner or looking to challenge yourself for the first time, the Grandmaster Ultras 2026 promises an unforgettable experience filled with community spirit and stunning desert beauty. Don’t miss out on this incredible opportunity to push your limits in the heart of Arizona’s picturesque outdoors!
The main course features the iconic Thelma Louise loop, ensuring competitors experience both exhilarating climbs and beautiful vistas. With ample support from aid stations and the option to have pacers, especially for runners over 70, camaraderie and encouragement abound. Whether you're a seasoned ultrarunner or looking to challenge yourself for the first time, the Grandmaster Ultras 2026 promises an unforgettable experience filled with community spirit and stunning desert beauty. Don’t miss out on this incredible opportunity to push your limits in the heart of Arizona’s picturesque outdoors!
Organiser's Description
Welcome to the warm and sunny Arizona strip! Come and enjoy miles of ATV trails and beautiful scenery in the desert. 100 miles and 100k have 48 hours cutoff. 50K and 50 miler runners start on Saturday, they will have 24 hours to finish the race.
Pacers are allowed for 100 miles and 100k after first lap or when it gets dark. For 50K and 50M runners, you can also have pacer if you finish in the dark. Pacer can start pacing from any crew accessible aid station. For any runners over 70 years old, pacers are allowed from the start for all races.
Start/finish area is located at lat 36.8272085438359, long 113.997853251625 [https://maps.app.goo.gl/jMhSWrJZskydixkWA]
The main course is a 50K, featuring clockwise Thelma Louise loop [https://connect.garmin.com/modern/course/253331221], and 6.2 mile out-and-back, elevation gain and loss of 1580 feet, minimum elevation is at 1722 feet, maximum at 2605 feet, at mile 19, you will reach Thelma Louise site.
50 miler course [https://connect.garmin.com/modern/course/edit/257652206] will run Thelma Louise loop [https://connect.garmin.com/modern/course/253331221] twice before returning to start/finish, total elevation gain and loss 2450 feet.
100 miler runners will run 50 miler course [https://connect.garmin.com/modern/course/edit/257652206] twice.
100K runners will run 50K course [https://connect.garmin.com/modern/course/257650669] twice.
From Start [https://bit.ly/3FABYE8], running downhill, at mile 0.6 enter a tunnel, at mile 1, turn right, climb up a short but steep hill, at mile 1.5, take left fork and reach Oasis aid station (36.84685, -114.00539 [https://www.google.com/maps/dir//36.8468519,-114.0053946/@36.407577,-113.6428902,12z]) at mile 1.9.
From Oasis [https://bit.ly/3HInmUQ], another 4 miles of rocky ATV trail to Cross Roads (36.90197, -114.01001 [https://www.google.com/maps/dir//36.901976,-114.0100135/@36.407577,-113.6428902,12z]) water stop at mile 6.2. Go STRAIGHT for about 3.6 to reach Junction (36.95429, -114.00749 [https://www.google.com/maps/dir//36.9542986,-114.007491/@36.407577,-113.6428902,12z]) aid station at mile 9.8.
From Junction aid station, turn LEFT going towards Stateline for about 2 miles, turn RIGHT, go along power line for 1.9 miles, turn RIGHT, go another 0.3 mile, turn LEFT, there will be a water stop (36.96749, -114.00545 [https://www.google.com/maps/dir//36.9674967,-114.0054592/@36.9626664,-114.0866902,12z?entry=ttu]) at 13.8, follow ATV trail for 3.2 miles, to reach Cattle Gate aid station (36.93249, -114.00167 [https://www.google.com/maps/dir//36.9324968,-114.001677/@36.8308225,-114.5684897,9z?entry=ttu]) at mile 17.2.
From Cattle Gate, turn LEFT, follow ATV trail along the fence for about 1.8 miles to Thelma and Louise site [https://www.google.com/maps/place/Thelma+and+Louise/@36.9321647,-113.968656,17z/data=!3m1!4b1!4m6!3m5!1s0x80ca2f3b26909b39:0x7d23107e5d413630!8m2!3d36.9321647!4d-113.968656!16s%2Fg%2F11j48jjj04?entry=ttu] at mile 19, turn RIGHT, go about 1 mile, turn RIGHT at water tank, go about 1 mile, turn LEFT, go about 1.2 miles to main dirt road, turn RIGHT, climb up dirt road for 1.5 miles to Overlook (36.89964, -113.99236 [https://www.google.com/maps/dir//36.8996423,-113.99236/@36.407577,-113.6428902,12z]) aid station at mile 23.7.
From Overlook [https://youtu.be/iuc52qmCwe8], go STRAIGHT, 1 mile to Cross Roads [https://youtube.com/playlist?list=PLojyxwndi_4hulSZCvbwgyC56yCR7T1qZ]water stop, 50M/100M turn RIGHT to repeat Thelma Louise Loop [https://connect.garmin.com/modern/course/253331221], then follow rest of 50K course, 50K/100K runners TURN LEFT, follow 4 miles of rocky ATV trails to unmanned Oasis [https://bit.ly/3kXscUG]. Go straight, then take RIGHT fork, go about 0.9 mile, turn LEFT at the bottom of the hill, go about 0.4 mile, go through the tunnel, another 0.3 mile, turn LEFT, back to start/finish.
50M course profile on Garmin Connect: https://connect.garmin.com/modern/course/edit/257652206
Google Map: 50M course map [https://www.google.com/maps/d/u/1/edit?mid=1GbNPe44OjLu4hNzjSRW_okugC3Dcd0A&ll=36.89947584025974%2C-113.99720907211304&z=12]
View 50M course map on Google Earth [https://earth.google.com/web/@36.89952823,-113.99720905,668.86074987a,28069.51317091d,30.00000129y,0h,0t,0r/data=MigKJgokCiAxR2JOUGU0NE9qTHU0aE56alNSV19va3VnQzNEY2QwQSACOgMKATE]
50K course profile on Garmin Connect: https://connect.garmin.com/modern/course/257650669
Google Map: 50KM course map [https://www.google.com/maps/d/u/1/edit?mid=1GbNPe44OjLu4hNzjSRW_okugC3Dcd0A&ll=36.89947584025974%2C-113.99720907211304&z=12]
View 50KM course map on Google Earth [https://earth.google.com/web/@36.89953186,-113.99720905,673.93732136a,28064.88507038d,30.00000129y,0h,60t,0r/data=KAIyKAomCiQKIDFFeFZsZEFfeEQ0QVNvUlVuYjNLeWJSajV3Mkl4RGhrIAI6AwoBMQ]
Pacers are allowed for 100 miles and 100k after first lap or when it gets dark. For 50K and 50M runners, you can also have pacer if you finish in the dark. Pacer can start pacing from any crew accessible aid station. For any runners over 70 years old, pacers are allowed from the start for all races.
Start/finish area is located at lat 36.8272085438359, long 113.997853251625 [https://maps.app.goo.gl/jMhSWrJZskydixkWA]
The main course is a 50K, featuring clockwise Thelma Louise loop [https://connect.garmin.com/modern/course/253331221], and 6.2 mile out-and-back, elevation gain and loss of 1580 feet, minimum elevation is at 1722 feet, maximum at 2605 feet, at mile 19, you will reach Thelma Louise site.
50 miler course [https://connect.garmin.com/modern/course/edit/257652206] will run Thelma Louise loop [https://connect.garmin.com/modern/course/253331221] twice before returning to start/finish, total elevation gain and loss 2450 feet.
100 miler runners will run 50 miler course [https://connect.garmin.com/modern/course/edit/257652206] twice.
100K runners will run 50K course [https://connect.garmin.com/modern/course/257650669] twice.
From Start [https://bit.ly/3FABYE8], running downhill, at mile 0.6 enter a tunnel, at mile 1, turn right, climb up a short but steep hill, at mile 1.5, take left fork and reach Oasis aid station (36.84685, -114.00539 [https://www.google.com/maps/dir//36.8468519,-114.0053946/@36.407577,-113.6428902,12z]) at mile 1.9.
From Oasis [https://bit.ly/3HInmUQ], another 4 miles of rocky ATV trail to Cross Roads (36.90197, -114.01001 [https://www.google.com/maps/dir//36.901976,-114.0100135/@36.407577,-113.6428902,12z]) water stop at mile 6.2. Go STRAIGHT for about 3.6 to reach Junction (36.95429, -114.00749 [https://www.google.com/maps/dir//36.9542986,-114.007491/@36.407577,-113.6428902,12z]) aid station at mile 9.8.
From Junction aid station, turn LEFT going towards Stateline for about 2 miles, turn RIGHT, go along power line for 1.9 miles, turn RIGHT, go another 0.3 mile, turn LEFT, there will be a water stop (36.96749, -114.00545 [https://www.google.com/maps/dir//36.9674967,-114.0054592/@36.9626664,-114.0866902,12z?entry=ttu]) at 13.8, follow ATV trail for 3.2 miles, to reach Cattle Gate aid station (36.93249, -114.00167 [https://www.google.com/maps/dir//36.9324968,-114.001677/@36.8308225,-114.5684897,9z?entry=ttu]) at mile 17.2.
From Cattle Gate, turn LEFT, follow ATV trail along the fence for about 1.8 miles to Thelma and Louise site [https://www.google.com/maps/place/Thelma+and+Louise/@36.9321647,-113.968656,17z/data=!3m1!4b1!4m6!3m5!1s0x80ca2f3b26909b39:0x7d23107e5d413630!8m2!3d36.9321647!4d-113.968656!16s%2Fg%2F11j48jjj04?entry=ttu] at mile 19, turn RIGHT, go about 1 mile, turn RIGHT at water tank, go about 1 mile, turn LEFT, go about 1.2 miles to main dirt road, turn RIGHT, climb up dirt road for 1.5 miles to Overlook (36.89964, -113.99236 [https://www.google.com/maps/dir//36.8996423,-113.99236/@36.407577,-113.6428902,12z]) aid station at mile 23.7.
From Overlook [https://youtu.be/iuc52qmCwe8], go STRAIGHT, 1 mile to Cross Roads [https://youtube.com/playlist?list=PLojyxwndi_4hulSZCvbwgyC56yCR7T1qZ]water stop, 50M/100M turn RIGHT to repeat Thelma Louise Loop [https://connect.garmin.com/modern/course/253331221], then follow rest of 50K course, 50K/100K runners TURN LEFT, follow 4 miles of rocky ATV trails to unmanned Oasis [https://bit.ly/3kXscUG]. Go straight, then take RIGHT fork, go about 0.9 mile, turn LEFT at the bottom of the hill, go about 0.4 mile, go through the tunnel, another 0.3 mile, turn LEFT, back to start/finish.
50M course profile on Garmin Connect: https://connect.garmin.com/modern/course/edit/257652206
Google Map: 50M course map [https://www.google.com/maps/d/u/1/edit?mid=1GbNPe44OjLu4hNzjSRW_okugC3Dcd0A&ll=36.89947584025974%2C-113.99720907211304&z=12]
View 50M course map on Google Earth [https://earth.google.com/web/@36.89952823,-113.99720905,668.86074987a,28069.51317091d,30.00000129y,0h,0t,0r/data=MigKJgokCiAxR2JOUGU0NE9qTHU0aE56alNSV19va3VnQzNEY2QwQSACOgMKATE]
50K course profile on Garmin Connect: https://connect.garmin.com/modern/course/257650669
Google Map: 50KM course map [https://www.google.com/maps/d/u/1/edit?mid=1GbNPe44OjLu4hNzjSRW_okugC3Dcd0A&ll=36.89947584025974%2C-113.99720907211304&z=12]
View 50KM course map on Google Earth [https://earth.google.com/web/@36.89953186,-113.99720905,673.93732136a,28064.88507038d,30.00000129y,0h,60t,0r/data=KAIyKAomCiQKIDFFeFZsZEFfeEQ0QVNvUlVuYjNLeWJSajV3Mkl4RGhrIAI6AwoBMQ]
Races
-
100 Miler
Incl. $15.10 Fee
Fri 27th February 2026 (7:00AM PST)
$250.10
OPENS 04 MAYEarly start option is available, run can request to start at Friday 6am. -
100 Km
Incl. $13.30 Fee
Fri 27th February 2026 (7:00AM PST)
$218.30
OPENS 04 MAY -
50 Miler
Incl. $10.60 Fee
Sat 28th February 2026 (7:00AM PST)
$170.60
OPENS 04 MAY -
50 Km
Incl. $9.40 Fee
Sat 28th February 2026 (7:00AM PST)
$149.40
OPENS 04 MAY
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