Essential Training Insights for Completing the Western States 100-Mile Race

Training for a 100-mile race often appears like a Herculean feat to outsiders. Many believe that success hinges solely on amassing incredible mileage or enduring grueling long runs. However, analysis from TrainingPeaks, based on insights from 63 finishers of the 2025 Western States 100, suggests a more nuanced approach. It reveals that lasting endurance, rather than merely doing more, is essential for race-day success. This dataset, comprising 47 men and 16 women, accounts for about 21 percent of the race's finishers. While the figures may not represent a definitive formula for completing a 100-miler—since no such formula exists—they provide valuable snapshots of effective training strategies that led to triumph in one of ultrarunning's most iconic events. To unpack these findings, we enlisted the expertise of coach Cliff Pittman, CPT. He breaks down key insights from the data into actionable takeaways that runners can incorporate into their training regimens. The primary focus is on nurturing the stamina required to sustain performance through the grueling latter stages of such a long-distance race. ### The Myth of the Mileage Monster The TrainingPeaks data highlights a surprising revelation regarding weekly mileage. Contrary to the common assumption that ultrarunners must log gargantuan numbers, the average weekly mileage for female athletes in the study was approximately 62 miles (or 98.4 kilometers), while men averaged about 57 miles (91.2 kilometers). These figures aren't vastly different from what competitive marathon runners might typically clock during their preparation phases. What sets ultrarunners apart from their road counterparts, as Pittman notes, lies in the nature of the miles run. "For a road runner, 60 miles a week is really not that much," he explains. But considering that these miles are often on trails, with substantial elevation changes, a 60-mile week becomes exponentially more demanding. The rugged terrain transforms training into a distinctly different experience compared to flat road running. Thus, the focus must shift from achieving a magic number of weekly miles to understanding total training stress, which accounts for the unique challenges of ultrarunning. Those who tackle tracks filled with technical terrain and steep gradients inevitably face a tougher landscape. Long run statistics corroborate this shift in focus. For example, men in the sample documented an average longest run of 43 miles, requiring nearly 9 hours, while women averaged 42 miles in about 8.5 hours. With these longest runs not even nearing the full race distance, the takeaway is clear: rather than chasing spectacularly long runs, the goal should be to develop a sustainable volume that can be consistently maintained and progressively built upon. ### Preparing for Specific Challenges The harsh conditions of the Western States 100 demand a tailored training regimen. Mountainous terrain, high temperatures, and sustained exposure are all part of the race's grueling challenge. Thus, training that simulates these specific conditions proves essential for success, as highlighted by the average weekly elevation gains: women averaged around 8,100 feet, while men logged in at about 7,500 feet. Pittman emphasizes that traditional fitness measures, such as lactate threshold and VO2 max, are still relevant, though their importance diminishes with longer distances. He insists that durability becomes the linchpin of performance late in the race. "Durability is really everything,” he states, “It’s the expression of fitness late into a race." To cultivate this endurance, particularly for uphill and downhill running, an understanding of specific race demands is vital. Ultramarathons feature significant eccentric loading, especially on the quads during descents. Failure to prepare for this can lead to muscle fatigue and diminished performance. Whether you're an ultrarunner or training for any race, the lesson here is clear: your training should mirror race-day demands as you approach the event. Pittman's strategy is to start with intense VO2 max workouts six months out, before shifting focus to the race-specific training methods that include long, slow runs filled with elevation changes. In conclusion, the journey to completing a 100-mile race is riddled with complexities that extend beyond sheer mileage. By prioritizing durability, tackling race-specific conditions, and understanding the nuances of training, you can position yourself for a more successful finish.

The Path to Durability in Running

What stands out in the long-distance running training discussed is the emphasis on cross-training and its role in enhancing durability. As many seasoned runners and coaches highlight, diversifying workout routines can significantly reduce the risk of injuries. The recommendation to incorporate low-impact activities such as cycling, swimming, or rowing is particularly insightful. These exercises primarily engage the aerobic system while maintaining a lower impact on joints—a crucial factor for longevity in running. Statistical insights reveal that over half of the runners analyzed in the TrainingPeaks data integrated strength training into their schedules, averaging nearly two sessions per week throughout their 12-week training cycles. This effort demonstrates a growing recognition of the value of building muscle strength, which not only boosts running economy but also better equips the body to handle the repetitive stress associated with high-mileage training. Pittman's advice to incorporate heavier weights in strength sessions is a pivotal takeaway here. This approach not only contributes to overall power development but is especially beneficial for trail and ultrarunners facing the rigors of varied terrains. Enhanced strength improves stability on descents and ascents, supports pack carrying, and even aids in managing fatigue during extended runs. While road runners can directly benefit from improved efficiency, the trails add an additional layer of complexity, necessitating a well-rounded training strategy. Equally notable is the inclusion of heat training in more than half of the athletes’ logs. Pittman points to a gap here, given the high temperatures typically encountered during significant races like the Western States. His recommendation is clear: runners should engage in their regular runs first before subjecting themselves to heat stress—whether through saunas or hot tubs—to adapt their bodies gradually. In sum, this isn’t just about ambitious training routines. Instead, it reflects disciplined, strategic choices aimed at enhancing performance and protecting against wear and tear. According to Pittman, “Western States finishers aren’t really doing anything mysterious. They’re just training consistently and doing things to protect their ability to keep running.” This perspective on training philosophy is refreshing and serves as an essential guide for both aspiring and experienced runners looking to sustain their passion for the sport. If you’re working in this space, whether as an athlete or coach, embracing these insights is key to fostering resilience in the face of challenges on the road or the trail.