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Mammoth 200 mandatory gear list
Mammoth 200 mi · Mammoth Lakes, California · Early October 2027 (date to come; 2026: Oct. 2–6)
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Your size:
Your distance
Trail running shoes
Your pickWaterproof jacket with taped seams
MandatoryMandatory at all times.
Black DiamondFineline Stretch Rain Shell - Women'sBackcountry$122.85$189.00−35%
PatagoniaStorm Racer Jacket*Trailhead Running Supply$160.00$299.00−46%
NikeMen's Running Division Men's Storm-FIT ADV Running JacketHeartbreak Hill Running Co.$210.00$280.00−25%
The North FaceSummit FUTURELIGHT Superior Graphic Jacket - Men'sBackcountry$360.00
CraftPRO Hydro Running Jacket 2 Black - Men'sFleet Feet$230.00SalomonBonatti Waterproof Jacket - Women'sBackcountry$139.96
$199.95−30%BrooksHigh Point Waterproof Jacket 2 - Men'sREI$149.97
$215.00−30%
Outdoor ResearchHelium Rain Jacket - Men'sBackcountry$110.47$169.95−35%
NorrønaSenja Gore-Tex Jacket - Men'sBackcountry$579.00
Black DiamondHighline Stretch Shell - Men'sBackcountry$314.30$449.00−30%
None in stock in your size today. We check every morning.
Check the spec before you buy.
Headlamp + spare batteries or battery pack
Mandatory
NathanNeutron Fire RX Runner's Headlamp 2.0Luke's Locker$65.00
Black DiamondSpot 400-R HeadlampColumbus Running Company$79.95
NathanNeutron Fire RX Runner's HeadlampConfluence Running$37.77$55.00−31%PetzlNAO LT HeadlampREI$99.95
BioLiteDash 450 USB-C Rechargeable Running HeadlampREI$69.95
NathanNeutron Fire R Runner's HeadlampConfluence Running$35.88$40.00−10%
Black DiamondAstro 300-R HeadlampColumbus Running Company$44.95Black DiamondDistance 1500 HeadlampREI$249.95
Black DiamondDistance LT 1100 HeadlampREI$149.95
Black DiamondSprinter 500 HeadlampREI$74.73
$99.95−25%
None in stock in your size today. We check every morning.
Check the spec before you buy.
Second headlamp
MandatoryRequired at night.
- NathanNeutron Fire R Runner's HeadlampConfluence Running$35.88
$40.00−10% - Black DiamondAstro 300-R HeadlampColumbus Running Company$44.95
Black DiamondSpot 400 HeadlampTrailhead Running Supply$59.95
Black DiamondSpot 400-R Rechargeable HeadlampMountain Running Company$64.95
Black DiamondSpot HeadlampMountain Running Company$59.95$99.95−25%
None in stock in your size today. We check every morning.
Check the spec before you buy.
Room for 3 L of water
MandatoryIt doesn't have to be full all the time.
NathanPinnacle Breeze 4 Liter Hydration Race VestNathan$83.99$140.00−40%UltrAspireBronco Race VestREI$64.77
$129.95−50%
NakedHigh Capacity Running Vest - Men'sNaked$110.00$160.00−31%
Black DiamondDistance 4L Hydration VestBackcountry$89.97$149.95−40%
SalomonADV Skin 5Sports Basement$145.00CamelbakTrail Run Hydration Vest with Two 17 fl. oz. Quick Stow Flasks - Women'sREI$74.73
$100.00−25%
NathanVaporAir 3.0 7 Liter Hydration PackNathan$107.99$180.00−40%
NathanPinnacle 4 Liter Hydration Race VestNathan$100.00$200.00−50%
NathanPinnacle Pro 6 Liter Hydration Race VestNathan$119.99$200.00−40%
NathanPinnacle 12L Hydration Race VestMountain Running Company$74.95$200.00−63%
None in stock in your size today. We check every morning.
Gloves (light or liner is fine)
Mandatory
SmartwoolActive Fleece Wind GlovePlaymakers$30.00$50.00−40%
BrooksMomentum Thermal Hybrid GloveAnn Arbor Running Company$59.99
The North FaceEtip Trail GloveFleet Feet$55.00
CraftLumen Fleece Glove 2The Running Well Store$44.95NathanHyperNight Reflective GlovesNathan$11.99
$30.00−60%Black DiamondDeploy Wind Hood GlovesMountain Running Company$49.95
SalomonMerino GlovesBackcountry$39.95
Outdoor ResearchTrail Mix GloveBackcountry$24.46$34.95−30%
2XURun Gloves2XU$27.00
NikeTherma-Fit Gore-Tex Run Glove · Black/SilverRunners Plus$54.95
None in stock in your size today. We check every morning.
Warm hat or Buff
Mandatory
BrooksNotch Thermal BeanieSports Basement$15.00$30.00−50%
NathanHyperNight Reflective BeanieConfluence Running$19.88$30.00−34%
SmartwoolMerino BeanieSmartwool$15.48$22.11−30%
OnMerino BeanieHeartbreak Hill Running Co.$40.00$50.00−20%IcebreakerMerino 200 Oasis BeanieBackcountry$21.00
$30.00−30%
Outdoor ResearchGrayland Fleece BeanieBackcountry$22.77$37.95−40%
BuffDryFlx BeanieThe Running Well Store$21.95
PatagoniaBetter Sweater Fleece BeaniePlaymakers$49.00
SalomonRun Tech BeanieBackcountry$29.95
CieleCR3BeanieColumbus Running Company$20.00$50.00−60%
None in stock in your size today. We check every morning.
Waterproof pants
MandatoryNight gear, checked leaving the early-evening aid station. In the day too if weather is forecast.
SalomonLight Shell Pant - Women'sBackcountry$83.97$119.95−30%
Outdoor ResearchHelium Rain Pant - Men'sBackcountry$64.98$129.95−50%
PatagoniaTorrentshell 3L Rain Pants - RegularPlaymakers$139.00
CraftPro Hydro Cargo Pant - Men'sFleet Feet$145.00
BrooksHigh Point Waterproof PantPlaymakers$130.00SalomonSense Aero Soft-Shell Pants - Men'sREI$160.00
SalomonBonatti Waterproof Pant UnisexMountain Running Company$140.00
None in stock in your size today. We check every morning.
Check the spec before you buy.
Spare long-sleeve layer
MandatoryNight gear: a dry base layer to change into.
BrooksNotch Thermal Long Sleeve 3.0 - Women'sSports Basement$45.00$90.00−50%
SmartwoolClassic Thermal Merino Base Layer 1/4 Zip - Women'sSmartwool$64.19$106.98−40%OnClimate Zip Hoodie - Women'sBackcountry$129.95
NikeSwift Dri-FIT UV Long-Sleeve Crew-Neck Running Top - Women'sPacers Running$36.00$60.00−40%
CraftADV Trail Wool Wind LS Tee - Women'sPacers Running$40.00$129.99−69%
IcebreakerMerino 200 ZoneKnit Long-Sleeve Crew Baselayer Top - Women'sBackcountry$75.00$150.00−50%
The North FaceDotknit Thermal 1/4-Zip Pullover Sweatshirt - Women'sBackcountry$49.50$90.00−45%
Under ArmourQualifier Run 1/2 Zip - Men'sSports Basement$32.50$65.00−50%
PatagoniaCapilene® Thermal HoodyPlaymakers$77.00$139.00−45%Mons RoyaleIcon Merino Air-Con Raglan Long-Sleeve Shirt - Women'sREI$53.77
$109.95−51%
None in stock in your size today. We check every morning.
Cell phone
MandatoryPower bank (10,000 mAh or more)
MandatoryGPS device with the course map, and a way to recharge it
MandatoryPhone or watch; the battery has to last 50 to 110 hours.
Collapsible cup
Mandatory
NathanReusable Race Day Cup 2 PackNathan$13.00
NathanRace Day CUPiRun Texas$9.99
NathanReusable Race Day Cup 2-PackCharlotte Running Company$10.00
None in stock in your size today. We check every morning.
Emergency bivvy
MandatoryNone in stock in your size today. We check every morning.
Whistle
MandatoryExtra food: what you plan to eat + 400 calories
MandatoryClifBloks Energy ChewsColumbus Running Company$2.99
GUEnergy ChewsREI$2.50
GUEnergy Gel · Lemon SublimeGazelle Sports$2.00Honey StingerOrganic Energy ChewsPlaymakers$2.69
MaurtenGel 100Fitness Sports$3.75
NeversecondC30 Energy GelTortoise & Hare Sports$3.25
Skratch LabsEnergy ChewsBull City Running Co.$2.45
Precision Fuel & HydrationPF 30 ChewMountain Running Company$2.87- GUEnergy Gel · Strawberry BananaAnn Arbor Running Company$1.99
KronoEnergy Bar · Apricot and CranberryThe Feed$2.12$3.03−30%
None in stock in your size today. We check every morning.
Electrolytes
MandatoryToilet paper + 2 ziplock bags
MandatoryTo pack used paper out.
Satellite messenger (inReach)
RecommendedMany sections have no cell service.
Water filter for a bottle
Recommended
SalomonSoft Flask XA FilterMountain Running Company$60.00
SalomonSoft Flask XA Filter 490mlTrailhead Running Supply$60.00
SalomonSoft Flask XA Filter 490ml Water BottleBackcountry$59.95
SalomonSOFT FLASK XA FILTER 490ml/16oz 42Playmakers$65.00
None in stock in your size today. We check every morning.
Tights or pants
Recommended
BrooksMomentum Thermal Tight 2.0 - Women'sPoint 2 Running Company$66.00$110.00−40%
CraftSubZ Light Pants - Men'sXtra Mile Running$119.95
NikeStride Dri-FIT Knit Running Pants - Men'sPacers Running$57.00$95.00−40%
SauconyRunshield Tight - Women'sConfluence Running$74.88$124.99−40%
The North FaceWinter Warm Pro Tight - Women'sSports Basement$88.00$110.00−20%JanjiTTech Pants - Men'sREI$48.83
$108.00−55%
OnRace Tights Half - Men'sHeartbreak Hill Running Co.$45.00$90.00−50%PatagoniaEndless Run Tights - Men'sREI$125.00
rabbitLow Light Pocket Tight - Men'sSports Basement$60.00$120.00−50%
SmartwoolActive Merino Movement Tight - Women'sSmartwool$106.98
None in stock in your size today. We check every morning.
Trekking poles
Recommended
SalomonS/LAB Ultra Carbon PolesTrailhead Running Supply$150.00
Black DiamondDistance Carbon FLZ Trekking PolesTrailhead Running Supply$239.95
Black DiamondDistance Carbon Z Trekking PolesTrailhead Running Supply$219.95
None in stock in your size today. We check every morning.
Gaiters
RecommendedFor the eastern Sierra pumice.
Sun hat or Buff
RecommendedOnLightweight CapSkirack$39.99
SmartwoolThermal Merino Reversible Neck GaiterSmartwool$27.82
Buff5 Panel Go CapBackcountry$22.72$34.95−35%
2XURun Visor2XU$12.00$20.00−40%
PatagoniaWomen's Cap Cool Trail TankMill City Running$28.00$40.00−30%
NNormalRace CapMountain Running Company$50.00Arc'teryxNorvan Mesh 5-Panel CapREI$70.00
NikeUnisex ACG Radical AirFlow Fly Cap Adjustable Dri-FIT Trail Running HatRun Flagstaff$65.00
BuffCoolNet UV Headband - BUFF-119328.525PR Run & Walk$11.95$24.00−50%
SmartwoolIntraknit All-Season Neck GaiterSmartwool$29.96
None in stock in your size today. We check every morning.
Sunglasses
Recommended
goodrCircle G SunglassesXtra Mile Running$29.95
ROKAVendée Sunglasses OutletRoka$100.00$215.00−53%
TifosiShumo SunglassesPacers Running$39.95
OakleyCybr Dyno SunglassesHeartbreak Hill Running Co.$204.00
District VisionKeiichi Standard Black, D+ Anti-FogDistrict Vision$279.58
goodrOG SunglassesHeartbreak Hill Running Co.$25.00
goodrBolt G SunglassesHeartbreak Hill Running Co.$45.00
goodrMach G SunglassesMill City Running$40.00
ROKAMallorca SunglassesRoka$115.00$230.00−50%
ROKALewis SunglassesRoka$120.00$240.00−50%
None in stock in your size today. We check every morning.
Sunscreen + lip balm
RecommendedExtra shoes (a different model helps)
RecommendedAnti-chafe, KT tape, bandages, duct tape, wipes
RecommendedEarplugs + eye mask
RecommendedCredit card
RecommendedMedications, toiletries, contact lenses
RecommendedBad-weather kit
Only if the race calls it, usually a few days before the start.
Insulated or puffy layer
MandatoryAt night, only if the race activates cold-weather gear (said at the briefing).
PatagoniaNano-Air Ultralight Insulated Pullover - Women'sREI$116.73
$199.00−41%
SalomonSense Aero Hybrid 1/2-Zip Hooded Jacket - Men'sBackcountry$119.95
SmartwoolEveryday Short Sleeve Button Down - Men'sSmartwool$54.92$78.45−30%The North FaceWinter Warm Pro Insulated Jacket - Men'sREI$170.00
Arc'teryxBeta Insulated JacketPlaymakers$750.00
PatagoniaLightweight Insulated Fjord Flannel ShirtPlaymakers$62.00$89.00−30%
PatagoniaTrail Harbor Button-Down Knit ShirtPlaymakers$59.00$85.00−31%
PatagoniaNano-Air® Light Hybrid JacketPlaymakers$174.00$249.00−30%
PatagoniaDown Sweater HoodyPlaymakers$345.00
PatagoniaNano-Air® Light JacketPlaymakers$259.00
None in stock in your size today. We check every morning.
From the race's official list (as published when we read it, October 22, 2026 (manual updated Sept. 29, 2026)). Rules can change: check the official list before race day. The Gear Fox isn't affiliated with the race.
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Quick answers
What is the mandatory gear for the Mammoth 200 mi?
Waterproof jacket with taped seams, Headlamp + spare batteries or battery pack, Second headlamp, Room for 3 L of water, Gloves (light or liner is fine), Warm hat or Buff, Waterproof pants, Spare long-sleeve layer, Cell phone, Power bank (10,000 mAh or more), GPS device with the course map, and a way to recharge it, Collapsible cup, Emergency bivvy, Whistle, Extra food: what you plan to eat + 400 calories, Electrolytes, Toilet paper + 2 ziplock bags.
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