Performance Lab · Race Strategy

The IRONMAN 70.3 St. George Strategy

The Toughest 70.3 in North America

1.2-mile swim in Sand Hollow Reservoir. 56 miles of bike across Utah's red rock country including the iconic Snow Canyon climb. 13.1-mile hilly run through St. George. Former 70.3 World Championship venue. The reputation for being the toughest 70.3 in North America is earned: 4,200 ft of total climbing across a 4-6 hour race in May desert heat.

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Saturday, May 2, 2026 · 7:00 AM MT

70.3 mi

Total Distance

~3,500 ft

Bike Elevation

3 mi @ 8%

Snow Canyon Climb

~4,500

Calories Burned

4-7 hr

Sustained Effort

70.3 WC

Former Worlds

Course Profile

70.3 miles total, 4,200 ft of climbing

Key Peak / FinishNotable PointReference Marker

Free Tool · Race Day Pacing

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The Bottom Line

St. George Is Won on the Snow Canyon Climb, Decided on the Run

The bike course progressively climbs to the Snow Canyon descent that drops you into T2 with fresh legs IF you paced the climb correctly, OR with cooked legs if you tried to race the climb. The half marathon is hilly enough that a 5-minute mistake on Snow Canyon becomes a 15-minute mistake on the run. Heat into the afternoon climbs to 80s+. Pace conservatively to mile 45, then race the back half.

E360 Chronic Load

BRP Acute Load

70.3mi

Race Day Peak

The 4-Week Countdown

Train into shape. Rest into fitness. The final 4 weeks consolidate fitness; they do not build new capacity.

4 Weeks Out

Peak Training Block

Longest brick session (long bike + short run off the bike)
Open water swim sessions if not already weekly
Race-pace bike intervals + race-effort run blocks
Practice race-day fueling on every long bike + brick
Continue Endurance360 (8-12 week build is ideal for Ironman)

2 Weeks Out

Taper Week One

Cut volume 30-40 percent; maintain some race-pace intensity
One key brick session early in the week
Continue Endurance360 daily
No new wetsuit, no new bike setup, no new fuels

1 Week Out

Race Week

Cut volume 60 percent; short swim/bike/run shake-outs only
Begin 5-day Beetroot Pro loading on Tuesday
Three Day Rule: complex carbs Thursday-Saturday
Two Day Hydration: clear urine Friday and Saturday

Race Day

Race Morning

Beetroot Pro 60-90 min before swim start
No antibacterial mouthwash
Standard pre-race breakfast 2-3 hours before
Second BRP dose at T2 for 10+ hour finishers

The Nutrition Timeline

Race-day nutrition is decided in the weeks before, not in the saddle. Calibrated to IRONMAN 70.3 St. George.

Six Weeks Out: Chronic Loading

Start daily Endurance360. Beta-alanine, creatine, and cordyceps require 4-6 weeks to saturate. Start now or skip the benefit.

Five Days Out: Nitrate Loading

Plasma NO peaks for the Veyo + Snow Canyon climb (miles 38-50 of the bike), the race-defining section. Sustained NO availability also helps the hilly half marathon. Take 2 servings of Beetroot Pro daily. Avoid antibacterial mouthwash all week.

Three Days Out: The Carb Load

Carb load aggressively: the bike + run combination burns through glycogen. 8-10 g carb per kg body weight Wed through Friday. Complex carbs in. Fibrous food out.

Two Days Out: Hydration Lock-In

Hydration starts Wednesday in desert climate. Salty foods Thursday and Friday to pre-load sodium for the May heat.

Saturday, May 2, 2026 · 7:00 AM MT

Race Day: Execute

60-90g carbs/hr on the bike, 200-300 cal/hr on the run. Sodium 750-1000 mg/hr on bike, 500-750 on run. Ice cooling at every aid station after mile 30 of the bike.

Stages

St. George 70.3 breaks into 5 stages with the Snow Canyon climb as the race-defining segment.

1. Sand Hollow Swim (Stage 1)

Distance

1.2 mi swim

Elevation

Reservoir at 3,070 ft

Profile

Single-loop in warm desert reservoir. Typically calm, occasionally chop.

Fueling Strategy

Pre-race Beetroot Pro 60-90 min before swim start. No fueling during the 25-35 min swim. Mount bottles + gels in T1 prep.

2. Bike to Gunlock (Miles 0-25)

Distance

25 mi

Elevation

3,070 → 2,850 ft (gradual descent)

Profile

Rolling exit from Sand Hollow, then descent toward Gunlock Reservoir. Fastest section of the day.

Fueling Strategy

350-400 cal/hr from bottles. 60-90g carbs/hr. Hydrate aggressively before the desert heat arrives. Sodium 750-1000 mg/hr.

KOM

3. Bike Veyo + Snow Canyon (Miles 25-50)

Distance

25 mi

Elevation

2,850 → 3,800 ft (climbing throughout)

Profile

Sustained climb to Veyo, then the iconic 3-mile Snow Canyon climb at 8% gradient. The race-defining segment.

Fueling Strategy

Caffeinated gel before Veyo. Pace Snow Canyon by power (target zone 4 if you have a meter), NOT effort. Most age-groupers blow up on Snow Canyon by attacking it.

4. Snow Canyon Descent to T2 (Miles 50-57.2)

Distance

7.2 mi

Elevation

3,800 → 2,880 ft (fast descent)

Profile

Technical descent into St. George. Free time if you stay aero and avoid braking.

Fueling Strategy

Final bottle on the descent. Top off sodium. T2 plan: shoes, hat, race belt, sunglasses, ZERO fumbling.

5. Half Marathon Through St. George (13.1 mi)

Distance

13.1 mi

Elevation

Rolling 2,880 → 3,200 → 2,880

Profile

Two-loop hilly half. Climbs to mile 4 and again at mile 9. Desert sun fully up by run start.

Fueling Strategy

Walk aid stations. 200-300 cal/hr. Ice in hat at every aid station. Cola + caffeine in the back half. Salt tab every 30 min if you are a salty sweater.

The St. George 70.3 Stack

Two products. Different mechanisms. Mapped to the chronic and acute demands of IRONMAN 70.3 St. George.

Acute · Race Week

Beetroot Pro

Patented betaine nitrate (NO3-T) delivering 300mg+ standardized dietary nitrate per serving. Reduces oxygen cost at sustained effort by 1 to 3% in published research. The 5-day pre-race loading protocol peaks nitric oxide for St. George 70.3's hardest sections.

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Chronic · 6 Weeks

Endurance360

Beta-alanine for lactic acid buffering, creatine for repeated hard efforts, cordyceps for VO2 max support. Beta-alanine requires 4 to 6 weeks of consistent loading. Starting at 6 weeks before St. George 70.3 is the deadline, not the suggestion.

Shop Endurance360

The Early Breakaway Pack bundles both products at a reduced per-product price. For St. George 70.3 athletes starting Endurance360 at 6 weeks out and Beetroot Pro at 5 days out, the bundle covers the full race week with one purchase.

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Target Finish Times

Realistic target windows for IRONMAN 70.3 St. George by athlete archetype. Use these to set your pacing.

Pro / Elite AG

4:00 to 4:30

Front of the field. Requires sub-2:30 bike and sub-1:30 run on hilly terrain.

Competitive AG

4:30 to 5:30

Top quartile age-group. Sub-2:45 bike and sub-1:50 run gets you here.

Solid Finish

5:30 to 6:30

Most experienced age-groupers fall here. Race executed without major errors on Snow Canyon.

First 70.3 St. George

6:30 to 8:00

Realistic finish for a first attempt at the toughest 70.3 in North America. Walking allowed.

Veteran Notes

Lessons from past IRONMAN 70.3 St. George finishers that no training plan teaches.

Pace Snow Canyon by power

Heart rate is unreliable on a 3-mile 8% climb in desert heat. Use power (80-88% FTP) or "comfortably hard" RPE. Most age-groupers attack it and pay on the run.

Mouthwash kills the protocol

Antibacterial mouthwash race morning kills the oral bacteria that convert dietary nitrate to nitrite. A 5-day loading protocol can be undone by one mouthwash rinse. Plain water only.

Heat acclimatize 2 weeks out

May in St. George hits 85+°F by the run. Sauna sessions or midday hot runs in the 2 weeks before. Athletes who skip this DNF on the run, not the bike.

Ice in helmet vents

Bike-aid ice cubes drop straight into helmet vents and melt down your face. 2°F core temp reduction = ability to keep fueling. Reapply at every bike aid station.

Sit up on the Snow Canyon descent

The 7-mile descent to T2 is free time if you stay aero. Most riders sit up because their legs are cooked from attacking the climb. Conservative climb = aero descent = 2-3 min free.

Race-eve pasta in St. George

St. George has limited fine dining; reserve Friday dinner Thursday or eat early Friday afternoon. The downtown crush at 6 PM is real.

St. George 70.3 Questions

When should I start nitrate loading for IRONMAN 70.3 St. George?+

Start a 5-day Beetroot Pro loading protocol on Monday before the Saturday race. Take 2 servings daily Mon-Fri, the race-eve dose Friday with dinner, and the race-morning dose 60 to 90 minutes before the 7:00 AM swim start. Plasma nitric oxide peaks during the Veyo + Snow Canyon climb section (miles 38-50 of the bike), which is exactly when oxygen-cost reduction matters most. The half marathon also benefits from sustained NO availability.

Why is St. George called the toughest 70.3 in North America?+

Three factors combine. The bike course has 3,500+ feet of climbing on a 56-mile course (most 70.3s have 1,500-2,500). The half marathon is hilly with 700 ft of gain. May desert heat builds through the race (60s at swim start, 80s+ at run finish). It was selected as the 70.3 World Championship venue in 2021 and 2022 specifically because the course produces a true performance ranking that flat fast courses cannot.

How should I pace the Snow Canyon climb?+

Snow Canyon is 3 miles at 8% gradient, peaking at mile 45 of the bike. Most age-groupers attack it and blow up. Correct approach: target 80-88% of FTP if you have a power meter (or "comfortably hard, would not surge here" RPE). The climb takes 20-30 minutes. The descent immediately after is fast: legs spent on Snow Canyon mean you sit up in the descent and lose 2-3 minutes of free speed. Pace the climb to ride the descent aero.

How many calories will I burn at 70.3 St. George?+

Roughly 4,500 calories over a 5-6 hour finish for a 170-pound athlete. The bike accounts for 60 percent of that. Practical race-day fueling: 350-450 cal/hr on the bike (60-90g carbs/hr), 200-300 cal/hr on the run. You will absorb 1,500-2,500 calories during the race; the 2,000+ calorie deficit is normal and not the limiter (glycogen + sodium are).

Should I use Beetroot Pro and Endurance360 together for St. George?+

Yes. Endurance360 chronic loading is especially valuable for the climb + heat combination of St. George: beta-alanine for lactic acid buffering on the climbs, creatine for repeated efforts, cordyceps for VO2 max under hypoxic + heat stress. Start Endurance360 6-8 weeks before race day. Beetroot Pro is the acute race-week product. The Early Breakaway Pack bundles both.

How should I handle the desert heat?+

May in St. George runs 50s at the 7 AM swim, climbing to 80-90°F by the run. Heat acclimatization in the 2 weeks before race day is critical: sauna sessions or midday hot runs. Cooling strategy: ice in helmet vents on the bike, ice in hat + sports bra on the run. Sodium 750-1000 mg/hr on the bike, 500-750 on the run. The athletes who DNF St. George usually quit on the run because they failed to manage heat on the bike.

What is the St. George swim like?+

Sand Hollow Reservoir is a clean, warm desert reservoir (typically 65-68°F in May). Wetsuit legal except in unusually warm years. The swim is a single counterclockwise loop. Most athletes finish in 30-40 minutes. The water is generally calm with occasional afternoon wind chop. Sight off the red rock formations on the far side; the buoy lineup is straightforward.

When should I take caffeine during St. George?+

First caffeinated gel at mile 30 of the bike (~2.5 hours into the race) before the Veyo climb. Second dose at T2 or early on the run. Third dose at run mile 8 before the second climb loop. Caffeine helps with cognitive sharpness in the desert heat where decision-making degrades faster. Practice the exact timing in long training sessions; race day is not the time for new caffeine timing.

How do I train for the climbs if I live somewhere flat?+

Three options. First, indoor trainer climbs at sub-threshold power for 20-40 min intervals replicate the Snow Canyon effort. Second, long out-and-back rides into headwind simulate sustained climbing load. Third, weighted vest runs replicate the eccentric quad load of the hilly half marathon. The biggest miss is athletes who do flat 4-hour rides and arrive at St. George with no climbing in their legs.

Saturday, May 2, 2026 · 7:00 AM MT

Ready for IRONMAN 70.3 St. George?

Six weeks of Endurance360 plus five days of Beetroot Pro is the protocol that converts months of training into a strong finish. Stack the system, follow the plan, and arrive at the start line ready.

70.3

Swim + Bike + Run

4,200ft

Total Climbing

~4,500

Calories Burned

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This is an independent training and nutrition resource for IRONMAN 70.3 St. George athletes and is not affiliated with or endorsed by the race organization.

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