Hard-Easy Every Day: How Jim Dietz Maintains 1:20 Half Marathon Times in His 60s
Meet Jim Dietz, a 65-year-old retired TI engineer who's been defying age-group expectations with sub-1:20 half marathon times and consistent sub-18-minute 5Ks. In this conversation, Jim takes us back to the golden era of corporate running in the 1980s, when Texas Instruments funded a legendary distance running program that attracted All-Americans and near-Olympic-level talent.
Jim's journey spans 45 years, from watching a New York City Marathon movie in college to becoming part of TI's powerhouse team that could take over entire races at Plano Pacers. He shares the untold story of corporate America's investment in employee wellness through competitive running, complete with national meets, sponsored travel, and workplace cultures that encouraged midday training sessions.
After a 12-year hiatus where he gained 60 pounds, Jim returned to running at 55 and rebuilt himself into one of the most competitive masters runners in the Dallas area. His unconventional training philosophy—running hard every other day at sub-7-minute pace for 50-65 miles per week—flies in the face of traditional coaching wisdom but continues to produce remarkable results.
Beyond the times and training, this episode explores the deep community connections that have sustained Dallas running for decades, from the consistency of Plano Pacers to the enduring friendships formed at White Rock Lake. Jim reflects on retirement, staying injury-free, and why he believes someone breaking the 2:30 marathon barrier locally could inspire a wave of similar achievements.
Whether you're curious about running's corporate history, seeking motivation for masters competition, or wondering how to maintain speed well into your 60s, Jim's story offers both inspiration and practical insights from someone who's truly lived the sport.
Creators and Guests
Host
Chris Detzel
As a seasoned technology leader with over 20 years of experience, I specialize in building and nurturing thriving communities both running and technical
Guest
Jim Dietz
Jim spent virtually his entire career at Texas Instruments (1982-2012), with a brief two-and-a-half-year stint at Raytheon when TI's defense division was sold. He retired at age 55 as an engineer, having been part of TI's legendary corporate running program during the 1980s and 1990s. Running History: Started running in 1980 at age 20 after watching a movie about the New York City Marathon. Joined TI's elite corporate running team in 1982, training alongside All-Americans and competing in national corporate championships. The program was so competitive that TI runners would dominate local races like Plano Pacers during team time trials. The Hiatus: Gradually stopped running competitively around age 43 and took a 12-year break from the sport, gaining approximately 60 pounds during this period. Returned to running at age 55 upon retirement. Training Philosophy: Employs an unconventional hard-easy alternating approach that defies traditional coaching wisdom. Runs 50-65 miles per week, averaging sub-7-minute pace for entire weeks. Does minimal stretching or cross-training unless injured. Maintains remarkable consistency, running in all weather conditions. Three-Goal System: Sets three objectives for every workout: (1) a baseline goal he should achieve, (2) a "pretty good" performance goal, and (3) a "heroic" stretch goal. This approach provides multiple ways to succeed and maintain motivation. Community Involvement: Long-time member of Plano Pacers (since 1983) and active in the Dallas-Fort Worth running community. Currently runs primarily at PGA Frisco due to proximity to his Prosper home, though he maintains connections throughout the region. Notable Characteristics: Exceptional injury resistance despite high-intensity training Remarkable consistency across decades Maintains competitive speed well beyond typical age-related decline Self-describes his training methods as "not recommended for others" Current Status: Still actively racing and training at age 65, regularly competing in local 5Ks and half marathons. Recently dealt with a minor hamstring issue but typically maintains injury-free training. Enjoys retirement with various interests including reading, church involvement, and recently acquired two Australian Shepherd puppies. Legacy: Represents both the golden era of corporate running programs and the potential for maintaining elite performance well into one's 60s through consistency and dedication, albeit with methods that may not be suitable for most runners.