+1. I’m going to make the assumption that you are an above average athlete given the 9 IM’s and hence you are attracted to CrossFit. Resist!
Instead do training specifically to get you strong like the linear progression (novice) program (NLP) from Starting Strength. (See Coach @chad’s comments about the coach behind it. Calling All (Strength) Athletes) . This is the most basic form of increasing stress in that you just add increments of weight to the bar every workout until that stops working. Depending on your athletic response (fast vs slow responder) and previous background with strength training the linear progression will be on the order of 10-12 weeks or longer if your inherent strength talent is high. The “novice” designation has nothing to do with how strong you are, but rather how far along you are in the process of approaching the limit of your ability to adapt to stress.
You can do the NLP yourself with the Starting Strength Book (& app too ), use an local coach if there is one near you or use their on-line coaching, which is very comprehensive. (Disclaimer: I have no financial interests in any of these options) .
One additional advantage to the on-line system is that they can design the routines to maintain your the cycling fitness while you do the NLP otherwise you’ll have to dial it back yourself. NLP is hard but you will get very strong in a very time efficient way if you do the program.
I did the NLP starting in Aug 2017 at the age of 52. After NLP and an intermediate program, one year later I was low-bar squating over 400 lbs for reps and had a standing press of 180lbs. These were far beyond what I had ever done the my lifting days of my 20’s. Now I purposely backed off my cycling training during that year to focus on getting strong and it took me a good 6 months of training to regain my cycling fitness but it was definitely worth it. Getting strong corrected some nagging injuries and discomfort on the bike and improved my quality of life. Now I have both strength an cycling training integrated.
Go get strong 