Mile Madness Endurance Run 2027
- Date
- Race weekend: Friday to Saturday, September 24 to 25, 2027
- Start time
- 9:00 AM start (Los Angeles)
- Location
- Auburn, California
- Entry fee
- From $75 · goes up to $449 on Oct 1, 2026
- Included with entry
- Includes a shirt and socks
- Fundraising
- Takes optional donations when you register
Registration is open.
We earn a small commission when you register through this link, at no cost to you. Details
Official race websiteAdd to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Friday, Sep 24, 2027 | ||||
| 72 Hour Run/Walk | Ultra | Sep 24, 20279:00 AM | $399$449 after Oct 1, 2026 | – |
| 48 Hour Run/Walk | 100 Mile | Sep 24, 20276:00 PM | $279$299 after Oct 1, 2026 | – |
| Saturday, Sep 25, 2027 | ||||
| 100 Mile Plus (another 48-hour race) | 100 Mile | Sep 25, 20279:00 AM | $279$299 after Oct 1, 2026 | – |
| 12 Hour Run/Walk | 50 Mile | Sep 25, 20279:00 AM | $149$199 after Oct 1, 2026 | – |
| 3 Hour Run/Walk | 10 Mile | Sep 25, 20279:00 AM | $75$85 after Oct 1, 2026 | – |
| 24 Hour Run/Walk | 50 Mile | Sep 25, 202712:00 PM | $199$249 after Oct 1, 2026 | – |
| 6 Hour Run/Walk | 50K | Sep 25, 20273:00 PM | $99$129 after Oct 1, 2026 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The Ultra fee goes up to $449 on Oct 1, 2026.
Race day planning
Entry fee schedule
- 72 Hour Run/Walk: $399 until Oct 1, then $449 until Jun 1, then $475 until Sep 24.
- 48 Hour Run/Walk: $279 until Oct 1, then $299 until Jun 1, then $349 until Sep 24.
- 100 Mile Plus (another 48-hour race): $279 until Oct 1, then $299 until Jun 1, then $349 until Sep 25.
- 12 Hour Run/Walk: $149 until Oct 1, then $199 until Jun 1, then $229 until Sep 24.
Online registration closes Sep 25, 2027, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 6:52 AM, and the 72 Hour Run/Walk starts at 9:00 AM. The start sits about 1,350 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
3770 Richardson Drive, Auburn, CA 95602
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
2026 results
All results72 Hour Run
24 Hour Run
48 Hour Run
Aggregated from official results (SingleTrack Running) for Mile Madness Endurance Run. Individual finisher names are not stored here.
How fast do you need to be at Mile Madness Endurance Run?
At the 2026 72 Hour Run, the fastest tenth finished in 21:58:46 or better, the top quarter in 51:06:43, and half the field in 59:20:16; the last tenth came in after 71:43:07.
At the 2026 24 Hour Run, the fastest tenth finished in 11:50:58 or better, the top quarter in 14:29:07, and half the field in 21:59:12; the last tenth came in after 23:55:12.
At the 2026 48 Hour Run, the fastest tenth finished in 30:22:48 or better, the top quarter in 40:32:05, and half the field in 42:13:01; the last tenth came in after 47:11:51.
| Age | Women | Men |
|---|---|---|
| 50-59 | n/a | 51:39:12 |
| 60-69 | 61:17:21 | n/a |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2026.
Typical race-day weather
Around September 24 the day usually runs from 57°F at dawn to 84°F in the afternoon, with measurable rain on about 9% of days. Cold snaps dip to 51°F and hot years reach 90°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
Race details
- Where
- 3770 Richardson Drive, Auburn, CA 95602Map
- Course
- Road
- Start elevation
- About 1,350 feet
- Included with entry
- Race Shirt, Co-Branded MudGear/Mile Madness Socks, and more; Race Shirt and Co-Branded MudGear/Mile Madness Socks
- Donations
- Accepted when you register
- Distances
- 10 Mile, 50K, 50 Mile, 100 Mile, Ultra
- Editions
- 2027 (Sep 24, 2027), 2026 (Sep 18, 2026)
Organize this race? Add details or a correction
Plan your race
Quick answers
- When is Mile Madness Endurance Run?
- It is a race weekend, Friday to Saturday, September 24 to 25, 2027: Ultra, 100 Mile on Friday; 100 Mile, 50 Mile, 10 Mile, 50K on Saturday.
- How much does it cost?
- Entry starts at $75 before processing fees, and rises to $449 on Oct 1, 2026.
- When does registration close?
- Online registration closes Sep 25, 2027, unless the race fills first.
- Do runners get a shirt or medal?
- Entry includes a shirt and socks, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- Can I donate to a cause when I register?
- Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
- What distances can I run?
- 10 Mile, 50K, 50 Mile, 100 Mile, Ultra.
- How big is it, and how fast?
- In 2026, 36 runners finished the 72 Hour Run; the median finish was 59:20:16 and the winner ran 14:36:56.
- Where does it start?
- 3770 Richardson Drive, Auburn, CA 95602.
From the organizers
Join the Ultimate Loop Adventure in the Heart of Trail Country!
Mile Madness is more than a race—it's a vibrant celebration of endurance, community, and personal triumph. Set against the stunning backdrop of Auburn, California, this looped trail event invites runners of all paces to push their limits (or simply enjoy the journey) on a meticulously designed 0.75-mile course and paved bike path, featuring a beautiful pond, shaded paths, and much more for an unforgettable experience.
Event Details:
Dates: September 24-27, 2027
Friday:
9:00 am 72 Hour Run
6:00 pm: 48 Hour Run
Saturday:
9:00 am: 3-Hour Run/Walk, 12-Hour Run/Walk, and 100 Mile Race
Noon: 24 Hour Run/Walk
3:00 pm: 6 Hour Run/Walk