Marathon Weekend 2020


SAFD:
  • Not going to bury the lead: After returning from MW, we will adopt another greyhound before the end of April. This vacation is one of the last 2 things on the between greyhound list.
  • DW will smash her HM PR. She ran DS 2018, her only half thus far, on 5 weeks of (mostly walking) training. This was due to re-injuring her knee.
  • We will attend the HH meet, and put faces to DIS names.
  • No park plans Friday or Saturday, and will enjoy having 2 unplanned to-the-hilt days at WDW.
  • I'll hang with the Corral C Goof Troop Sunday before the race, and get tips from them.
  • We'll have an enjoyable CC 5k, taking the victory lap together.
  • Successful completion of my first marathon.
 
Marathon weekend predictions

1. Get a boarding group for RotR on Friday.
2. For the first time in five disney trips, get in a swimming pool.
3. Be too shy to say more than hi at the marathon pre-race meetup.
4. Start cursing the marathon around mile 18
5. Ride ToT during the marathon
6. Eat all the Mickey-shaped foods
7. Figure out how to do it all again next year
 
SAFD:
  • Not going to bury the lead: After returning from MW, we will adopt another greyhound before the end of April. This vacation is one of the last 2 things on the between greyhound list.

Congrats on the adoption!
 
This is the ultimate stupid fueling question...since I usually don't stop during races.But assuming I'm with the GTRRP during the marathon, should I fuel based on miles run, e.g every 4 or so or elapsed time, e.g. every 40 minutes (which would include stops)

@DopeyBadger What say you?
 
This is the ultimate stupid fueling question...since I usually don't stop during races.But assuming I'm with the GTRRP during the marathon, should I fuel based on miles run, e.g every 4 or so or elapsed time, e.g. every 40 minutes (which would include stops)

@DopeyBadger What say you?

Definitely by the mile. The research I've read states that the calorie burn is by the mile based on body weight. The % of carbs/fat burned is based on the relative effort level. If you're running far below your capabilities and come in in a normal glycogen state, then you're likely to need far less carbs than in a normal marathon. But as long as your body continues to tolerate the intake, there's no real downside to "over consuming" carbs during the run. Well and the beers will help too. 😉

Total kcal burned = Body Weight (in kg) * Distance of race (in km)
*(Humphrey 2013) This is a general value and a specific value would require physiological testing.

The calculation for carb is a bit more complicated.
 
Remind us :teeth:

Total kcal burned = Body Weight (in kg) * Distance of race (in km)
*(Humphrey 2013) This is a general value and a specific value would require physiological testing.

Leg Muscle Mass: Males = Body Weight (in kg) * 21%; Females = Body Weight (in kg) *20%
*21% and 20% represent averages for males and females respectively with ranges of 14-27% and 18-22% respectively (Rapoport 2010). Again this illustrates the "average" or generalness of this calculation

CHO Storage in Legs = Leg Muscle Mass * 80
*(Humphrey 2013)

VO2peak = *formula not shown due to proprietary nature, from Jack Daniels

vVO2 (m/s) = 2.8859+0.0686*(VO2peak-29)

vVO2 (mph) = vVO2 (in m/s) *2.23694

Pace at %VO2peak (in min/mile) = (60/(vVO2 in mph)*(%VO2peak/100))/1440

Marathon Finish Time (Hours:Minutes:Seconds) = ((Pace at %VO2peak * 26.2)/60)/1440

Half Marathon Finish Time (Hours:Minutes:Seconds) = ((Pace at %VO2peak * 26.2)/60)/2880

Average CHO Use = Total kcals burned * ((%VO2peak-5)/100)
*(Humphrey 2013)

Subtract CHO Storage in legs = Avg CHO Use - CHO Storage in Legs

Subtract CHO Storage in Liver = Subtract CHO Storage in legs - 100

Deficit Cal/hour = Subtract CHO Storage in Liver / Race Finishing Time

Deficit Carbs (g) / hour = (Deficit Cal/hour) / 4

ESTIMATED DISTANCE (in miles) TO HIT WALL WITH NO CARB LOAD OR IN-RACE CONSUMPTION
= (((CHO Storage in Legs / Average CHO Use ) * Race Finish Time) * 60) / Pace at % VO2peak

DISTANCE (in miles) TO HIT WALL WITH NO CARB LOAD BUT GLUCOSE CONSUMPTION AT PLANNED RATE
= ((((CHO Storage in Legs + ((Planned CHO consump * Race Finish Time) * 4) / Average CHO Use ) * Race Finish Time ) * 60) / Pace at %VO2peak


Sources

Rapoport BI. Metabolic factors limiting performance in marathon runners. PLoS Comput Biol. 2010 Oct 21;6(10):e1000960. doi: 10.1371/journal.pcbi.1000960. PubMed PMID: 20975938; PubMed Central PMCID: PMC2958805.

Humphrey, L. [Hanson's Coaching Services]. (2013, Nov 23). Calculating Caloric Needs for Marathon- Updated 11/22/2013 . [Video File].

Jentjens RLPG, Wagenmakers AJM, Jeukendrup AE: Heat stress increases muscle glycogen use but reduces theoxidation of ingested carbohydrates during exercise. J Appl Physiol 2002, 92:1562–1572.
 
Last easy 8 miles this morning— 50 degrees and low humidity—would that I could swap this weather for next Sunday!

Predictions:
- I break and only work a half-day on Friday so I can go to the meet-up, because there’s no time like the present to force myself upon new friends! :wave2:
- The 4 park Minnie Ears are sold out by the time I get to the expo and I use that as an excuse to buy something far more expensive.
- I fail to limit myself to my planned half a drink at our Oga’s Reservation on Saturday. :poop:
- I PR the marathon (just have to beat 4:48!) and most of my Rapunzel flowers stay in my hair.
- My husband finally realizes this is FUN and agrees to run Wine and Dine with me...


Side Note: I’m local and have access to a car, so if anyone needs anything last minute, PLEASE let me know!
 
Two questions regarding the half marathon:
1. I assume they use timing mats to generate the run tracker. What intervals are those mats. In other words, how often can one expect updates?
2. If a spectator doesn't make a bus from a Disney property prior to the race, it looks like they probably won't be able to get one until they start returning runners? Or do they keep running them the entire time for the half.
 
I think I am in corral c. Would love some people to spend the time with. How to know who is whom?
 
On the subject of runner tracking... does anyone have the link. It seemed obvious for other races, but somehow I've missed it this time.
 












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