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.
The fastest marathons in Arizona, Utah, Colorado, and the Mountain West, ranked by hills, weather, and altitude, plus how the new Boston downhill rule changes things.
The fastest marathons in California, Oregon, Washington, and Hawaii, ranked by hills, weather, and wind. See how CIM, Eugene, LA, Big Sur, and 7 more score.
The fastest marathons in the South, ranked by hills, race-morning weather, and wind. See how Houston, Marine Corps, Richmond, Disney, and 8 more score.
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.
