Taiwan Twin Towers Challenge Analysis: Strategy and Preparation for Extreme Time Challenges

The Taiwan Twin Towers Challenge is one of the most discussed ultra-long-distance challenges in Taiwan’s cycling community. Starting from Taiwan’s southernmost Eluanbi Lighthouse to the northernmost Fugui Cape Lighthouse, the route spans approximately 550 kilometers and must be completed within a time limit (typically 24-36 hours).

Basic Rules of the Twin Towers Challenge

Official Specifications

Route:

• Start: Eluanbi Lighthouse (Pingtung, Taiwan’s southernmost point)
• Finish: Fugui Cape Lighthouse (Shimen, New Taipei City, Taiwan’s northernmost point)
• Distance: Approximately 550 km (varies slightly depending on route choice)

Time Limits:

• 24-hour challenge (highest difficulty)
• 30-hour challenge
• 36-hour challenge (entry level)

Verification Methods:

• GPS track recording for the entire route
• Check-in at designated checkpoints
• Photo evidence at start and finish

Route Options

There is no fixed route for the Twin Towers Challenge, but common routes include:

Route Type	Features	Elevation Gain	Suitable For
Western Plains Route	Primarily Provincial Highway 1, relatively flat	Approximately 2,000m	Pursuing speed
Eastern Coastal Route	Provincial Highway 9, spectacular scenery	Approximately 3,500m	Experiencing the scenery
Mixed Route	Combines the advantages of both	Approximately 2,500-3,000m	Balanced strategy

Physical Demands Analysis

The Math of 24 Hours

Goal: Complete 550 km within 24 hours
Required average speed: 550 ÷ 24 = 22.9 km/h

That doesn’t look difficult, but it actually includes:

• Refueling stops (5-15 minutes each)
• Repair time (flat tires and other incidents)
• Brief rests (eye fatigue, body soreness)

Actual riding speed requirement: A sustained speed of at least 25-27 km/h

Physical Requirements

Metric	24-Hour Challenge	36-Hour Challenge
FTP	3.5+ W/kg	3.0+ W/kg
Long-ride capability	12+ hours	10+ hours
Night riding ability	Essential	Essential
Sleep deprivation tolerance	High	Medium

Energy Calculation

Estimated energy expenditure for 550 km:

• Average power output of approximately 150-200W (depending on body weight and speed)
• 24-hour expenditure: Approximately 3,600-4,800 kcal (while riding)
• Basal metabolism total: Approximately 5,000-6,500 kcal

Hourly intake needed: Approximately 250-300 kcal

Recommended fueling strategy:

• Solid food: Every 90-120 minutes
• Fluid intake: 500-750ml per hour
• Electrolytes: Every 1-2 hours

The Unique Challenges of Night Riding

The Twin Towers Challenge almost inevitably includes one full night, making night riding ability critical to the success of the 24-hour or 36-hour challenge.

Lighting Equipment

Front Lights:

• Must provide sufficient illumination for safe riding speeds (25 km/h and above)
• Recommendation: At least 1,000 lumens for the main light
• Backup light: At least 500 lumens
• Battery life: Ensure enough for a full night (typically 6-8 hours)

Rear Lights:

• Safety visibility, red flashing mode
• Multiple rear lights (direct rear, saddle bag)

Reflective Gear:

• Reflective vest or reflective patches
• Ankle/knee reflective bands
• Helmet reflective stickers

Mental State Management

The most dangerous period is typically between 2-5 AM:

Physiological reasons: The body’s circadian rhythm makes drowsiness most likely during this period, even without sleep deprivation.

Coping strategies:

• Prepare caffeine supplies in advance (energy drinks, caffeinated gels)
• Arrange interesting sections or interaction with the support vehicle during the most dangerous hours
• If severe drowsiness occurs, stop briefly and rest for 5-10 minutes (safer than continuing to ride)

Route Identification

Road sign visibility decreases at night, making navigation ability more important:

• Download offline maps in advance
• Backup GPS devices (phone + cycling computer)
• Pre-load route points into devices

The Importance of Logistical Support

The Twin Towers Challenge is nearly impossible to complete alone (especially the 24-hour version); a well-prepared support team is essential.

Support Vehicle Configuration

Recommended Setup:

• At least 2 people rotating driving duties (to prevent support driver fatigue)
• 1 person responsible for food and supply preparation
• 1 person serving as a “tracker” (monitoring rider progress and condition)

Support Vehicle Responsibilities:

• Refueling stops every 50-70 km
• Emergency mechanical support (tire changes, adjustments)
• Psychological support (riding alongside or cheering during difficult stretches)
• Safety monitoring (especially important at night)

Supply Preparation

Solid Food Options:

Food Type	Advantages	When to Use
Rice balls/Sandwiches	Satiety, real food	Meal times
Bananas/Energy bars	Quick intake	Between aid stations
Instant noodles (hot food)	Boosts morale on cold nights	Midnight refueling
Energy gels	Intake while riding	High-intensity sections

Mechanical Preparation

550 km is an equally severe test for the bicycle.

Pre-Race Mechanical Inspection Checklist

• [ ] Tire replacement (new tires)
• [ ] Chain cleaning and re-lubrication
• [ ] Brake pads replaced or verified
• [ ] All bolts torque-checked
• [ ] Derailleur system adjustment
• [ ] Spoke tension verification
• [ ] Light battery levels and mounting

Spare Parts

• Inner tubes x 3-4
• Tire repair tools
• Spare chain
• Spare brake pads
• Common hex key set

Suggested Training Plan

6-Month Preparation

First 3 Months:

• Build a long-distance foundation (one 8-10 hour long ride per week)
• Night riding training (1-2 times per month)
• Consecutive 2-day rides (weekends)

Last 3 Months:

• Add ultra-long single-day training (15+ hours)
• Consecutive 3-day ride training
• Full night riding training (simulating race hours)

Mental Preparation

The psychological challenge of the Twin Towers Challenge is no less than the physical:

• Expect difficulties: Tell yourself “there will definitely be moments when you want to give up”
• Small goal strategy: Divide the 550 km into 10-15 smaller goals
• Partner motivation: Interaction with the support team is an important source of sustained motivation

The Meaning of Completing the Twin Towers

The Twin Towers Challenge is not just a physical victory, but also a confirmation of your own willpower.

Every rider who completes the Twin Towers says: at some point during the journey—perhaps on some empty road at 3 AM—they thought about giving up, but chose to continue. That moment of “choosing to continue” is the most meaningful.

The group photo at Fugui Cape Lighthouse after completion is a sense of achievement that no words can fully describe.

If you have this dream, start planning. Taiwan’s north and south are waiting for you to measure their length with your own legs.

Related Reading

• Twin Towers Challenge: Complete Guide from Northern Lighthouse to Southern Lighthouse
• Complete Guide to the Taipei-Kaohsiung Twin Towers: Taiwan’s 520 km Double Century Challenge
• One-Day Twin Towers 520 km Ride Report: The Ultimate Challenge from Fugui Cape Lighthouse to Eluanbi Lighthouse
• Riding from Taipei to Kenting in 24 Hours: A Dialogue with Time and Yourself