Great to hear that you’re interested in advanced training for a half marathon! Here’s a 12-week training program tailored for a 50-year-old male who wants to push themselves to the next level:

Week 1-4:
• Aim to run 4-5 times a week, with one long run on the weekend.
• Start with a total weekly mileage of 25-30 miles, gradually increasing to 35-40 miles by the end of the four weeks.
• Consider adding in some speed work or hill repeats once a week.
• Incorporate strength training 2-3 times a week, focusing on your core, glutes, and legs.

Week 5-8:
• Increase your weekly mileage to 40-45 miles per week, running 5-6 times a week.
• Your long run should now be up to 12-14 miles.
• Continue with your speed work or hill repeats once a week, and consider adding in a tempo run.
• Maintain your strength training routine, focusing on increasing weight and intensity.

Week 9-12:
• Continue to increase your weekly mileage to 45-50 miles per week, running 6 times a week.
• Your long run should now be up to 14-16 miles.
• Increase the frequency of your speed work or hill repeats to twice a week, and add in a longer tempo run.
• Maintain your strength training routine, increasing the intensity and focusing on explosive movements.
Some other tips to keep in mind:
• Listen to your body and take rest days as needed. Recovery is just as important as training.
• Incorporate stretching and foam rolling into your routine to prevent injury.
• Fuel your body with healthy, nutrient-dense foods, and hydrate properly.
• Consider incorporating cross-training activities such as cycling or swimming to give your body a break from running.
Remember, this is a challenging training program, so be sure to give yourself time to recover and adjust as needed. Good luck with your advanced training for the half marathon!