Data-driven training guides, gear breakdowns, and free structured tools built for runners who care about getting faster. No paid product placements, no AI fluff.
Part 4 of our Race Prep Series: what to eat and do in the hours after crossing the finish line, how long to actually stay off running, DOMS, massage, and a research-backed timeline for getting back into training.
Part 3 of our Race Prep Series: everything between waking up and the starting gun, breakfast timing, chafing, clothing, headphones, bib placement, and the warm-up research, all in one race-morning playbook.
Part 2 of our Race Prep Series: the exact carb, protein, electrolyte, and hydration playbook for the 24 to 36 hours before a half or full marathon, backed by the research.
Personalized 5k, 10k, half marathon, and marathon plans calculated from your actual current race times. Includes structured cutback weeks and exports to PDF or Garmin FIT files.
Enter a recent race result to reveal your exact training zones—easy, tempo, interval, and marathon pace—along with equivalent race predictions from 5k to marathon.
Real-time bestsellers and price drops on running shoes, GPS watches, and recovery footwear updated every 12 hours.
Search upcoming marathons, half marathons, 10Ks, and 5Ks near you or filter by major US running cities. Powered directly by RunSignup data.
Week 8 of an 18-week marathon plan targeting a 3:30 finish time.
Intervals + marathon pace long run block
Your Fitness Score is calculated from a recent race result and represents your current aerobic capability. It sets your personalized training paces for easy runs, tempo efforts, intervals, and long runs.
Most online plan generators use static templates based on arbitrary goal times. PR Nerd calculates training paces from your actual current fitness, ensuring you do not overtrain or run recovery days too fast.
Yes, 100% free. No paywalls, no required account registration, and no premium upsells. We build open training tools and publish honest running research.
Yes. All generated training plans can be downloaded as PDFs, Excel spreadsheets, or directly as Garmin/Coros compatible FIT files for your watch.
Explore our latest exercise physiology guides or calculate your personalized race pace targets today.
