HYROX Nashville in December: indoor venue, weather and sodium
Nashville's normal December high is 52.2°F and the low is 33.3°F (NOAA 1991–2020 normals, Nashville International Airport), but HYROX Nashville on December 9–13, 2026 runs inside Music City Center, so the DO IT team's answer is that the outdoor weather won't set your sodium needs; your own sweat rate will. The temperature that matters is the hall during your wave, and nobody publishes that in advance.[1–3]
DO IT sells a creatine-electrolyte powder. You don't need it to use anything on this page.
The numbers
| Month | Normal high | Normal low | Source |
|---|---|---|---|
| December (race month) | 52.2°F (11.2°C) | 33.3°F (0.7°C) | NOAA NCEI, station USW00013897 |
| November | 61.4°F (16.3°C) | 39.2°F (4.0°C) | same |
| January | 49.1°F (9.5°C) | 30.1°F (−1.1°C) | same |
| July (warmest month) | 90.9°F (32.7°C) | 70.5°F (21.4°C) | same |
December's normal high sits about 39°F below July's. Normal December precipitation at the same station is 4.43 inches for the month. These are 30-year averages, not a forecast for race weekend. Check the forecast the week of your wave.
The race itself is in a hall at Music City Center, 201 Rep. John Lewis Way S. The official event page tells athletes who want to "enter the hall" early to use spectator check-in.[3] Indoor temperature depends on the hall, the crowd and the time of your wave. Plan for a warm room, whatever the airport thermometer says. A 52°F street and a packed hall are two different races.
How much sodium, then?
Your sodium loss is sweat volume times how salty your sweat is. The ACSM puts average sweat sodium at about 35 mmol/L (roughly 800 mg per litre), with a range of about 10 to 70 mmol/L (roughly 230 to 1,600 mg per litre).[4]
| Sweat lost during the race | Low-salt sweat (~230 mg/L) | Average (~800 mg/L) | Salty sweat (~1,600 mg/L) |
|---|---|---|---|
| 0.5 L | ~115 mg | ~400 mg | ~800 mg |
| 1.0 L | ~230 mg | ~800 mg | ~1,600 mg |
| 1.5 L | ~345 mg | ~1,200 mg | ~2,400 mg |
That's what you lose, not what you have to replace during the race. Most HYROX finishes take 60 to 120 minutes, and an athlete who starts with normal sodium levels can usually finish without taking any on course.[4] Our HYROX sodium guide shows how to measure your own sweat rate with a scale. Do the scale test indoors, at race effort, in clothes you'll race in, so the number reflects the hall and not a training run outside.
How that compares with what's in the tub
Across the 7 creatine and electrolyte drinks we checked on November 11, 2026, sodium per serving runs from 160 mg to 1,000 mg, with a median of 425 mg.[5]
- 160 to 350 mg: a light top-up. Covers a low-salt sweater losing about a litre.
- 500 to 550 mg: a typical sports-drink level. Covers about half a litre of average sweat.
- 1,000 mg: a heavy-sweater dose. DO IT Creatine Hydration sits here (5 g creatine monohydrate, 1,000 mg sodium per scoop).[6] It's more than a light sweater needs, and too much as a daily default for anyone told to limit salt.
Pick the product that matches your sweat, not the biggest number, and count the sodium in your breakfast too.
Race-morning plan for Nashville
- Find your start time. HYROX links individual start times about three days before the event, and they can't be changed. Check-in opens 90 minutes before your assigned start.[3]
- Eat a normal salted meal at least 4 hours before your wave, with about 5–7 mL of fluid per kg of body weight (350–490 mL for a 70 kg athlete), sipped over the meal.[1]
- If you know you sweat heavily or salty, take your usual electrolyte drink with that meal. Nothing new on race day.
- Small sips in the last hour. Don't chug, and don't drink beyond your losses during the race.[1]
- Keep creatine at your normal daily dose. Race week is not the time to start loading. Full wave-by-wave timeline, including 8:00 and evening starts, in our HYROX Nashville race-morning guide.
Run your target time through the free HYROX Nashville split calculator so you know roughly how long you'll be sweating in the hall.
FAQ
What's the weather in Nashville in December?
The NOAA 1991–2020 normal at Nashville International Airport is a 52.2°F high and a 33.3°F low for December.[2] Pack a layer for the walk to Music City Center and for waiting outside before and after your wave.
Is HYROX Nashville indoors?
Yes. It runs in a hall at Music City Center, 201 Rep. John Lewis Way S, Nashville, December 9–13, 2026.[3] Confirm in the organizer's final athlete information.
Does the December weather change how much sodium I need at HYROX Nashville?
Not much. You race indoors, so the hall, your pace and your own sweat decide your losses. Use the loss table above with your own scale test.
How much sodium should I take before HYROX Nashville?
There's no single number. A salted meal and your normal fluids cover most people. If you sweat heavily or salty, use the loss table above with your own scale test, and try any pre-race dose in training first.
Is 1,000 mg of sodium too much before a race?
For a heavy, salty sweater losing more than a litre, it's in range. For a light sweater it's more than needed. Anyone with high blood pressure, kidney disease or a sodium-restricted diet should ask their doctor first.
How we built this
Temperatures and precipitation: NOAA NCEI U.S. Climate Normals 1991–2020, monthly, station USW00013897 (Nashville International Airport), pulled 2026-11-12 from the NCEI normals access file. Race dates, venue, check-in window and start-time rule: hyrox.com event page, read 2026-11-12. Sodium per product: each brand's own product page, read 2026-11-11 (N = 7). Sweat sodium range: ACSM 2007 position stand. Celsius values are converted from NOAA's Fahrenheit normals and rounded to one decimal. We'll refresh the product numbers quarterly.
Sources
- Sawka MN et al. Exercise and fluid replacement. ACSM position stand. Med Sci Sports Exerc. 2007;39(2):377–390. https://doi.org/10.1249/mss.0b013e31802ca597
- NOAA National Centers for Environmental Information. U.S. Climate Normals 1991–2020, monthly, station USW00013897 (Nashville Intl AP). https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/access/USW00013897.csv
- HYROX. HYROX Nashville official event page. Dates, venue, hall check-in, start-time rule. Accessed November 12, 2026.
- DO IT. How much sodium do you need during HYROX? (ACSM and Thomas 2016 references inside).
- DO IT. Sodium in creatine electrolyte drinks, labels read November 11, 2026.
- DO IT. Creatine Hydration product facts.
Unofficial guide. Not affiliated with, endorsed by or connected to HYROX. General information for adults, not individualized medical or coaching advice.