I know the topic has been covered many times previously. However, I wondered if one longer run is more beneficial than two shorter runs. I'm wondering because I don't always have time to get the one longer run in before heading to work. Also, it's tough to really be up for a hard workout early in the morning. Any suggestions would be greatly appreciated.
bump
It depends what you're trying to accomplish
For pure recovery, I'd go with two 30 minute runs rather than a single 60.
If you're trying to build endurance, a single 75 minute run is better than a 45 minute + a 30 minute run.
Also, in most cases, two short runs are better than one short run. So if you don't have time in the a.m. for a long run or you're not up for doing speed work in the a.m., do a short run and then do another run in the p.m.
My suggestion is to use the search function on this site to look for some of those aforementioned threads covering this topic.
For best results, perform one search of 60 minutes rather than two 30 minutes searches.
You're right, it's been covered every month since months were invented. Do you expect different information specially personalized for your situation and physiology?
Try two runs most days for a few months. Try to still get in a couple runs of decent length during the week. Don't replace 1x90 with 2x45, replace it with 45+60. The shorter runs are less stress, so you can run more minutes overall. Your money back if not satisfied.
If you're getting tired of doing one long run, try two. Sometimes psychological benefits are greater than physiological benefits.