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I've been running for the last 3 weeks, I run 6 times a week including cycling, swimming and intense cardio. My average jog pace is around 11:23 per mile. Is it possible to get to a race pace of 10 min/mile in 2 months (half marathon)?
How effective will interval training once a week be in increasing my pace? And what other speedwork can I do?
And finally my biggest problem is endurance. When I'm running for too long my chest starts to ache and if I stop running and try to get started again my legs seize up- is that normal for a beginner runner?
I am doing one long run a week and increasing mileage each week, however what have you all found to be the most effective/efficient ways to increase endurance?
Thanks and apologies for all the questions.