How far into training are you? My last marathon cycle had a run about 2 months out that was 3 mile warm up + 10 at marathon pace + 3 mile cool down and I used a half to do the workout with a few miles before and after. If you are going to try to do an equivalent pace I use the VDOT calculator and would shoot for 7:43 pace.
I'm going to be contrarian and say you should run at your marathon pace. When you do race your full, the first 16 miles or so should feel very easy. What better way to test that than by running a half at your goal pace. It's a perfect opportunity to simulate your race nutrition and fueling too. If it does feel easy, you can bank that feeling and recall it on race day. If it doesn't feel easy, you'll know you're not there yet and need to boost your fitness and endurance over the next few months before the race.
I am currently on week 2 of a 18 week plan for the WDW marathon. The half marathon is during week 5. Per the plan I am following race day is a 16 miler with 10 miles @ MRP. Thinking of about a mile warm up and cool down and just run the whole race as a race to help determine training paces for the remainder of the marathon plan.
A valid point and the plan I am following includes that often for the long runs. Long runs for the next few weekends leading up to the race are as follows:
Looks like you could do a 1-2 mile warmup, miles 1-3 at long run pace, miles 3-13 at marathon pace, and then a 1-mile cooldown to get your 16 in as planned.
As a fellow Floridian, I feel like we need a very specific calculator for our needs. I’ve got maybe 3 days in a YEAR when conditions might be considered just right for an accurate assessment… and they’re inevitably days when I’m not running, lol!
