Sunday - December 7, 2025

Frenzy Hills Mountain Rides

McDowell Mountain Regional Park
Fountain Hills, AZ

Join us for the Frenzy Hills Rides at McDowell Mountain Regional Park. Ride through stunning Sonoran desert scenery on various loop options, from 25 to 100 miles. Enjoy a less technical route than last year, with options for solo, duo, and quad relay events. Register now and get ready to ride!

Register

Volunteer

*Distances may vary slightly each year due to permitting.

Event Location

McDowell Mountain Regional Park
16300 McDowell Mountain Park Dr, Fort McDowell, AZ 85264

Our start/finish line is located at Competitive Track parking lot to the left as you enter the park gates.

Directions

Bib Pickup

Aravaipa Office
Friday, December 5, 2025
11:00 AM -5:00 PM
Aravaipa Running Warehouse
Drive Thru
2401 S 24th St
Phoenix, AZ 85034
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Race Start/Finish
Sunday, December 7, 2025
5:00-8:00AM
McDowell Mountain Regional Park
Competitive Track Parking Lot
16300 McDowell Mountain Park Dr
Fountain Hills, AZ 85268

Start Times

6:00 AM - 100 Mile XC and SS Relay & Solo Start
6:15 AM - 100 Mile Gravel Relay & Solo Start
7:00 AM - 50 Mile XC and SS Relay & Solo Start
7:15 AM - 50 Mile Gravel Relay & Solo start
8:00 AM - 25 Mile XC and SS Start
8:15 AM - 25 Mile Gravel Start
8:30 AM - Juniors 25 Mile (age 14-17) Start
8:45 AM - Juniors 25 Mile (age 8-13) Start

Volunteer

We need help to make Frenzy Hills possible. Volunteer perks include Aravaipa race credits and race swag!

Volunteer Now

Race Perks

Finish Line Photo

Copy of Chip timed race results

Well stocked aid station

Finisher award by Aravaipa Artworx

Live Tracking

Follow the 2024 Frenzy Hills with live split points throughout the race.

Aravaipa Live

Register Now

Registration closes: Mon, Oct 7 @ 11:59PM MT

Race Registration

	Until 9/3	Until 10/8	Until 11/5	Race Week
100 Mile Solo	$110	$120	$130	$140
100 Mile Duo	$120	$140	$160	$180
100 Mile Quad	$180	$220	$260	$300
50 Mile Solo	$70	$75	$80	$90
50 Mile Duo	$90	$100	$110	$130
25 Mile Solo	$55	$60	$65	$75
25 Mile Juniors	$25	$25	$25	$30

*Prices does not include 6.30% Maricopa County Tax

Course Information - 100 Mile XC

Key Stats

Date | Sunday, December 7, 2025

Start Time | 6:00 AM

Last Lap Cut Off Time | 5:00 PM

Time Limit | 13 Hours (7:00 PM Overall Cutoff)

Distance | 100- Miles

Total Elevation Gain | 3,708 feet

Max Elevation | 2,638 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

100 Mile Solo Event Details

The Frenzy Hills takes some classic local trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 100 mile riders will get to know the loop well with 4 complete circuits of the route.

The loop is comprised of the entire Escondido Trail to kick things off, connecting with the Pemberton Trail which features a mix of wider rolling desert terrain, some more narrow and rocky single track and a short section of sandy wash, and ends out on the Long Loop.

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 6:00 AM

Last Lap Cut Off Time | 5:00 PM

Time Limit | 13 Hours (7:00 PM Overall Cutoff)

Distance | 100- Miles

Total Elevation Gain | 3,708 feet

Max Elevation | 2,638 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

100 Mile Duo Event Details

The Frenzy Hills takes some classic local trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 100 mile riders will get to know the loop well with 4 complete circuits of the route.

The loop is comprised of the entire Escondido Trail to kick things off, connecting with the Pemberton Trail which features a mix of wider rolling desert terrain, some more narrow and rocky single track and a short section of sandy wash, and ends out on the Long Loop.

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 6:00 AM

Last Lap Cut Off Time | 5:00 PM

Time Limit | 13 Hours (7:00 PM Overall Cutoff)

Distance | 100- Miles

Total Elevation Gain | 3,708 feet

Max Elevation | 2,638 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

100 Mile Quad Event Details

The Frenzy Hills takes some classic local trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 100 mile riders will get to know the loop well with 4 complete circuits of the route.

The loop is comprised of the entire Escondido Trail to kick things off, connecting with the Pemberton Trail which features a mix of wider rolling desert terrain, some more narrow and rocky single track and a short section of sandy wash, and ends out on the Long Loop.

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Course Information - 100 Gravel

Key Stats

Date | Sunday, December 7, 2025

Start Time | 6:15 AM

Last Lap Cut Off Time | 5:00 PM

Time Limit | 12.5+ Hours (7:00 PM Overall Cutoff)

Distance | 100- Miles

Total Elevation Gain | 3,708 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

100 Solo Gravel Event Details

The Frenzy Hills Gravel Grinder takes the best of McDowell's flow trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 100 mile riders will get to know the loop well with 4 complete circuits of the route.

The loop starts on Escondido Trail but quickly turns onto Cinch before connecting with the Pemberton Trail. From there a short stint on the road brings you to Verde Trail and back to Pemberton. The back half of the course brings a mix of trails leading onto and off of Pemberton. Delsie Trail and Tonto Tank mark your fun, downhill sections, while Shalmo Wash brings you home to the finish.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 6:15 AM

Last Lap Cut Off Time | 5:00 PM

Time Limit | 12.5+ Hours (7:00 PM Overall Cutoff)

Distance | 100- Miles

Total Elevation Gain | 3,708 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

100 Duo Gravel Event Details

The Frenzy Hills Gravel Grinder takes the best of McDowell's flow trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 100 mile riders will get to know the loop well with 4 complete circuits of the route.

The loop starts on Escondido Trail but quickly turns onto Cinch before connecting with the Pemberton Trail. From there a short stint on the road brings you to Verde Trail and back to Pemberton. The back half of the course brings a mix of trails leading onto and off of Pemberton. Delsie Trail and Tonto Tank mark your fun, downhill sections, while Shalmo Wash brings you home to the finish.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 6:15 AM

Last Lap Cut Off Time | 5:00 PM

Time Limit | 12.5+ Hours (7:00 PM Overall Cutoff)

Distance | 100- Miles

Total Elevation Gain | 3,708 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

100 Quad Gravel Event Details

The Frenzy Hills Gravel Grinder takes the best of McDowell's flow trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 100 mile riders will get to know the loop well with 4 complete circuits of the route.

The loop starts on Escondido Trail but quickly turns onto Cinch before connecting with the Pemberton Trail. From there a short stint on the road brings you to Verde Trail and back to Pemberton. The back half of the course brings a mix of trails leading onto and off of Pemberton. Delsie Trail and Tonto Tank mark your fun, downhill sections, while Shalmo Wash brings you home to the finish.

Course Information - 50's

Key Stats

Date | Sunday, December 7, 2025

Start Time | 7:00 AM

Time Limit | 12 Hours (7:00 PM Overall Cutoff)

Distance | 50- Miles

Total Elevation Gain | 1,854 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

50 Solo Event Details

The Frenzy Hills takes some classic local trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 50 mile riders will get to know the loop well with 2 complete circuits of the route.

The loop is comprised of the entire Escondido Trail to kick things off, connecting with the Pemberton Trail which features a mix of wider rolling desert terrain, some more narrow and rocky single track and a short section of sandy wash, and ends out on the Long Loop.

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 7:00 AM

Time Limit | 12 Hours (7:00 PM Overall Cutoff)

Distance | 50- Miles

Total Elevation Gain | 1,854 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

50 Duo Event Details

The Frenzy Hills takes some classic local trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 50 mile riders will get to know the loop well with 2 complete circuits of the route.

The loop is comprised of the entire Escondido Trail to kick things off, connecting with the Pemberton Trail which features a mix of wider rolling desert terrain, some more narrow and rocky single track and a short section of sandy wash, and ends out on the Long Loop.

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 7:15 AM

Time Limit | 11.5+ Hours (7:00 PM Overall Cutoff)

Distance | 50- Miles

Total Elevation Gain |1,854 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

50 Solo Gravel Event Details

The Frenzy Hills Gravel Grinder takes the best of McDowell's flow trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 50 mile riders will get to know the loop well with 2 complete circuits of the route.

The loop starts on Escondido Trail but quickly turns onto Cinch before connecting with the Pemberton Trail. From there a short stint on the road brings you to Verde Trail and back to Pemberton. The back half of the course brings a mix of trails leading onto and off of Pemberton. Delsie Trail and Tonto Tank mark your fun, downhill sections, while Shalmo Wash brings you home to the finish.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 7:15 AM

Time Limit | 11.5+ Hours (7:00 PM Overall Cutoff)

Distance | 50- Miles

Total Elevation Gain | 1,854 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

50 Duo Gravel Event Details

The Frenzy Hills Gravel Grinder takes the best of McDowell's flow trails and connects them into a 25 mile loop through McDowell Mountain Regional Park. 50 mile riders will get to know the loop well with 2 complete circuits of the route.

The loop starts on Escondido Trail but quickly turns onto Cinch before connecting with the Pemberton Trail. From there a short stint on the road brings you to Verde Trail and back to Pemberton. The back half of the course brings a mix of trails leading onto and off of Pemberton. Delsie Trail and Tonto Tank mark your fun, downhill sections, while Shalmo Wash brings you home to the finish.

Course Information - 25's XC | Gravel | Junior's

Key Stats

Date | Sunday, December 7, 2025

Start Time | 8:00 AM

Time Limit | 11 Hours (7:00 PM Overall Cutoff)

Distance | 25- Miles

Total Elevation Gain | 927 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

25 Solo Event Details

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 8:15 AM

Time Limit | 10.5+ Hours (7:00 PM Overall Cutoff)

Distance | 25- Miles

Total Elevation Gain | 927 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

25 Solo Gravel Event Details

The 25 Mile Gravel Loop will also start on Escondito Trail but quickly turn onto Cinch, Cinch to Pemberton and up onto Escondito again. After a short ride on the road Racers will veer on to Verde Trail on the North side of the park and take that to the intersection of Pemberton (again). From there you are off, on and off Pemberton going down Delsie, up Bluff and down Tonto Tank before rejoining Pemberton to Shalmo wash and the finish.

Key Stats

Date | Sunday, December 7, 2025

Start Time | 8:00 AM

Time Limit | 11 Hours (7:00 PM Overall Cutoff)

Distance | 25- Miles

Total Elevation Gain | 927 feet

Max Elevation | 2,484 feet

Women's Course Record |

Men's Course Record |

Course Map

CalTopo Course Map

25 Solo Event Details

In addition to a fully stocked drink and feed station at the start/finish line, there will be one fully stocked aid station at Granite Tank on the Pemberton Trail and a water & electrolyte remote aid station located on the long loop. Our main aid station will be stocked with water, ice, electrolyte drinks, salty and sweet snacks, fruit, pb&j, bean rollups, hot food (quesadillas, grilled cheese), and more.

Additional Race Info

The race courses will be well marked with orange plastic ribbons with black polka dots and reflective medallions. Trail junctions and turns will be well marked with reflective laminated signs. In addition, blue & white checkerboard plastic flagging and RED reflective WRONG WAY signs will be hung to designate non-race or “WRONG WAY” trails. All riders are responsible for understanding the layout of the course. Please familiarize yourself with the course maps on our website prior to race day and/or print a map to bring along with you.

We will have our MedStar Solutions medical staff based at the start / finish headquarters to assist with first aid onsite. We reserve the right to pull you from the race if medical officials deem it necessary.
NOTE: Please do NOT call 911 in a medical emergency. Our medical team is highly trained and understands the terrain and driving access points. Please call the race day number and they will dispatch immediately.
MedStar Solutions Race Day Number: 480-269-4126

Parking
Remember the park now charges a $7 park entry fee per vehicle.
Please arrive early and have correct change (cash) available on race evening for a smooth entry process. Maricopa County Parks also offers an Annual Pass for $85. Carpool to save!

Pets
For the safety of all riders, no pets are allowed on-course at the night runs. Any pets at the race must be on a leash at all times, respect park rules, and be supervised.

Camping
McDowell Mountain Regional Park offers 96 individual sites for tent or RV camping. Sites in the campground may be reserved online at Maricopa County Parks. Participants can also camp in the group campground for $22/night. Payment is taken at the park entrance. The group campground is 2.5 miles away from the event. All sites in the campground may be reserved online at go here.

Mountain Biking and Trash
Please respect the trails and the beauty of the desert by disposing of any trash at one of our aid stations. We do recycle and participate in the Terracycle program where we recycle used nutrition packets and gel wrappers. Please deposit them in the specified container at the feed station.

Results & Photos

Sunday - December 7, 2025

Frenzy Hills Mountain Rides

Event Location

Bib Pickup

Start Times

Volunteer

Race Perks

Live Tracking

Race Registration

Course Information - 100 Mile XC

100 Solo

100 Duo

100 Quad

Course Information - 100 Gravel

100 Solo Gravel

100 Duo Gravel

100 Quad Gravel

Course Information - 50's

50 Solo

50 Duo

50 Solo Gravel

50 Duo Gravel

Course Information - 25's XC | Gravel | Junior's

25 Solo

25 Solo Gravel

25 Junior's

Additional Race Info

Results & Photos