At my most recent gravel event, cramps started biting me at mile 25. On the walking section at mile 35, my legs were refusing to bend. At the mile 37 aid station, I took a shot of pickle juice (I don’t care for pickles) out of desperation. It didn’t magically erase the cramps, but I was able to ride the final 23 miles with only mild twinges, even on the most brutal walking section in the last 10-ish miles. I’m not a pickle juice convert, but I’m open to the fact that there might be something there.