The weekend of October 17–19 is one of the most stacked weekends on the global ultra and trail running calendar. Whether you're toeing a start line yourself, tracking a friend through a mountain range, or simply looking for your next goal race, there's plenty happening across North America and Europe to keep your attention. Here's what's on the radar.
Why This Weekend Matters for Ultra Runners
October sits in a sweet spot. The heat of summer racing is gone, conditions in the mountains are crisp and demanding, and the fall ultra season is at full tilt. Several marquee events converge this weekend, drawing competitive elite fields alongside thousands of age-group runners chasing their own finish lines. The variety of terrain, distance, and format on offer makes this a useful reference point whether you're planning your own 2025 race calendar or just following the action from your couch.
Following these events live, even as a spectator, does something real for your own training motivation. Research consistently shows that watching others perform at high levels activates goal-pursuit behavior in observers. It's the same reason trail running communities have exploded globally, not just as participant sport but as something people follow, discuss, and rally around. If you've been curious about what that culture looks like from the inside, Tom Hooper Is Elevating Trail Running Beyond the Race gives a sharp look at how accessibility and storytelling are reshaping the sport.
The Javelina Jundred 100 Mile. Fountain Hills, Arizona
Distance: 100 miles (also 100K option) Date: October 19, 2024 Terrain: Desert singletrack, loop format, minimal elevation gain by ultra standards
Javelina Jundred is one of the most beloved 100-milers in North America, and it's a staple on the Western States qualifier circuit. Set in the Sonoran Desert outside Phoenix, the course runs a looped format around the McDowell Mountain Regional Park. The loop layout means spectators and crew can see runners multiple times throughout the race, which makes it unusually accessible for anyone who wants to support someone on course.
The elite field typically includes runners targeting a Western States Golden Ticket, making mid-race positioning worth following closely. With the flat-ish desert terrain, Javelina tends to produce fast times when conditions cooperate. Temperatures in mid-October can still push into the 80s Fahrenheit during daylight hours, which adds a heat management element that separates the careful from the burned out.
How to follow: Live tracking is available through iRunFar, which typically provides real-time leaderboard updates and athlete check-in data. The Javelina Jundred social channels also post aid station updates throughout the race.
Ultra-Trail du Mont-Blanc Finishers Weekend. Chamonix, France
While UTMB's main races ran in late August, the broader UTMB World Series continues through October with qualifier events feeding into the points system. This weekend sees several World Series events across Europe and Asia conclude their autumn editions, with runners accumulating the Running Stones (UTMB's qualification currency) needed to enter future UTMB races. Check the official UTMB World Series calendar for the specific events running in your region this weekend.
The UTMB World Series model has fundamentally changed how runners plan multi-year race goals. Understanding the points structure is worth your time if Chamonix is on your bucket list, because entry now depends on cumulative qualifier performance rather than a single lottery draw.
Grindstone 100. Virginia, USA
Distance: 100 miles Date: October 18–19 Terrain: Technical mountain trails, roughly 23,000 feet of elevation gain
Grindstone is not a race for the faint-hearted. Set in Virginia's George Washington National Forest, it features relentless climbing and descending on technical terrain, with significant sections running at night. The race starts at midnight, which immediately filters out anyone who hasn't done serious preparation for dark running.
The course covers portions of the Shenandoah Mountain Trail and surrounding ridgelines. With over 23,000 feet of cumulative gain across the distance, it sits comfortably among the toughest 100-milers on the East Coast. Elite runners here tend to be experienced mountain athletes who prioritize vertical over flat speed.
How to follow: Grindstone uses UltraSignup for registration and posts tracking links before race day. The race has a smaller, tight-knit feel compared to Javelina, but the community support on course is exceptional. It's also a Western States qualifier, so the lead pack is usually racing with purpose beyond the finish line.
Transgrancanaria Advanced. Gran Canaria, Spain
Distance: 65K (approximately 40 miles) Date: October 18–19 Terrain: Volcanic mountain trails, significant elevation, Atlantic coastal scenery
Transgrancanaria's autumn edition draws a strong European field to the volcanic trails of Gran Canaria. The island's terrain is dramatic and technically demanding, with steep ridgelines, lava rock sections, and rapid elevation changes that make pacing an art form rather than a science.
The 65K distance is increasingly popular as an entry point into longer trail running for athletes coming from road marathon backgrounds. If you're in that category and wondering whether trail ultras are a natural next step, the growth in women's participation across distances like this is worth noting. The Women's Trail Trend That Has Nothing to Do With Speed explores why more women are turning to trail running for reasons that go well beyond podium finishes.
How to follow: Transgrancanaria provides GPS tracking via their official race app and website. The race also broadcasts updates through their Instagram and Facebook channels, with Spanish and English commentary available for major events.
Pinhoti 100. Alabama, USA
Distance: 100 miles Date: October 19 Terrain: Southern Appalachian forest trails, rolling hills, leaf-covered singletrack
Pinhoti 100 runs through the Talladega National Forest in Alabama and is known for its beautiful fall foliage conditions in mid-October. The course follows the Pinhoti Trail through hardwood forests, with enough technical sections to keep runners honest but a profile that allows for sustained running rather than constant hiking.
It's a quieter race than Javelina or Grindstone in terms of media attention, but among ultra runners it carries a strong reputation for course quality and event organization. It's also a Western States qualifier, which gives the front of the field genuine competitive stakes.
How to follow: UltraSignup and the Pinhoti 100 Facebook group are your best real-time sources. Volunteers and crew members often post updates throughout the night, creating a community feed that's worth joining ahead of race day.
How to Follow Ultras in Real Time
If you're new to spectating ultras remotely, here's a practical toolkit:
- iRunFar: Covers major US and international ultras with live athlete tracking, leaderboard updates, and race reporting throughout the event.
- UltraSignup: Many North American races post real-time tracking links through UltraSignup's platform.
- Race-specific apps: UTMB World Series events and larger European races typically have dedicated GPS tracking apps. Download these before race morning.
- Instagram Stories and Facebook groups: Smaller races rely heavily on social updates from race directors, aid station captains, and crew members. Following the official race account and joining the race's community group before the weekend gives you ground-level access.
- YouTube livestreams: Some larger events now stream finish line footage for extended periods. Check race websites in the days before for streaming links.
Why Watching Ultras Builds Your Own Running Culture
There's a case to be made that spectating ultras, even virtually, is a legitimate part of being a runner. Watching someone grind through mile 80 of a 100-miler at 3 a.m. recalibrates your relationship with your own discomfort. It normalizes suffering as a feature rather than a flaw, and it connects you to a broader community of people who take long, hard things seriously.
If you've recently completed a fall race and you're thinking about what comes next, the mental and physical recovery process matters as much as the next training block. Understanding how to eat after an ultra to actually recover is one of the most underrated parts of building toward a bigger race next year.
And if this weekend's previews have you thinking about building toward a longer goal in 2025, it's worth starting that conversation now. How to Build Your Winter Base After Fall Race Season covers exactly how to structure the next few months to arrive at your goal race in the best possible shape.
The ultra world doesn't sleep on weekends like this one. Set your tracking apps, find a friend who's racing, and let the field do the rest.