DocWard
Purple Belt
I love going to martial arts seminars. I've been to probably over a hundred seminars. Notable names include Dan Inosanto, Masaaki Hatsumi, Stephen Hayes, Bud Malmstrom, Doron Navon, Herman Suwanda, Neil Adams, Chai Sirisute, Sakasem Kanthawong, Jongsoonan Fairtex, Royce Gracie, Renzo Gracie, Carlson Gracie Jr, Carlos Machado, Eb Kieslich, and our own @Brian R. VanCise, among many others.
I've learned plenty of good stuff from seminars, but honestly they're not always the best deal in terms of retainable material per dollar spent. Often so much material gets dumped on you at once that you don't get a chance to practice it on an ongoing basis before it fades from memory. I just like the experience of meeting new people and immersing myself in the perspective of a high level instructor who has a different approach from my usual training partners,
Sounds like you need to find better seminar instructors.
I've not been to very many seminars, because of the time commitments I had when I was studying previously. Of them, two truly stand out, the one with Joe Lewis, and one with Lee Wedlake. I'm convinced I wouldn't have been in the car accident I mentioned after the Lewis seminar but I was both mentally and physically fatigued, and I don't think my reaction time was what it usually would have been. Mr. Wedlake was one that the vast majority of what he said was over my head, but made me realize what Kenpo can be. So, I agree, the right instructor and a seminar can be a great thing.
I think seminars are great. I still attend as many as I can and put on seminars frequently. For the long-timers, seminars are a great way to pick up some main concepts of an art without having to spend years training (and having to start at the beginning). You will probably feel a little tired for your run the next day, but adrenaline will kick in and get you through your 5k. All that being said, you wrote that you are doing a 5k race, as opposed to a fun run. If you are a serious contender in the race, you may want to respectfully decline the seminar invite.
It is a 5K trail race, not a lot of "fun" involved, as the trail is classed "moderate to difficult." Yes, I could take it easy and even walk it, because I am not likely to be a serious contender, instead most likely being mid-pack in my age group. However, I am competitive with myself, and want to do well.