I know the best answer to this question is dependant on our physical conditioning and the weather, but I'm hoping for some advice from veterans who may be in similar physical condition. My husband and I will start our camino in SJPP on Sept. 8, 2022 and our plan has been to make the trek all the way to Roncesvalles on the first day. Everything we read initially made it seem "do-able" according to our current physical conditioning — as long as we do some additional training as we get closer. However, I've heard from at least one veteran and have read/seen a few posts recently that are making me second-guess. We are in our 50s with minor to moderate arthritis in the knees (i.e. mostly an elastic knee brace and anti-inflammatories when needed, and my husband has had day surgery to clean up the cartilage in one of his knees and occasional steroid shot); we've both been fairly active — he competed in triathlons up until 6 years ago and I still run and/or walk several miles almost daily. BUT, we do live at sea level and it's very flat here. We're planning to do some hill training on forest trails with our loaded packs (15-16 lbs) every few weeks starting in a month. For now we're focusing on walking 5-10 miles every other day (without our packs) and will soon start adding some 15-milers and walking with our packs a few times a week. Assuming that we stick to the conditioning plan and we've made good choices with our gear, and taking into account the weather in early September, we'd greatly value experienced feedback on whether that trek all the way to Roncesvalles on the first day is advisable or not. Thank you!