WanjinShi Is Not a “Windy Flat Marathon” — It’s a Coastal Endurance Race That Requires Tactics

The most underestimated aspect of the WanjinShi Marathon is that many runners only remember its label status, the ocean views, and “the North Coast is beautiful,” while forgetting that it is actually a course that relies heavily on pacing discipline and wind-field reading ability. If you treat it like a typical urban flat marathon and run a uniform pace all the way through, the result is usually not a conservative finish, but rather burning through too much glycogen unconsciously in the headwind during the first half, only to be settled up by your own first-half decisions after the 30K mark.

This article is the designated “Part 2: Practical Guide,” so the focus is not on re-explaining what negative splits mean, nor on vaguely saying “headwinds are tiring.” This piece addresses more practical questions: on a course like WanjinShi — coastal, exposed, with frequent direction changes and a wind field that isn’t necessarily symmetrical — how exactly should runners position themselves, adjust pacing, plan nutrition, and turn negative splits into a real tactic rather than a slogan?

As of June 28, 2026, the latest official regulations show the 2026 WanjinShi full marathon route as:

Start → Provincial Highway 2 at 48.6km → Wanli Tunnel → Dapeng Police Station → Left turn onto Huanjin Road → Qingshui Road (Provincial Highway 2) → Danjin Highway (Provincial Highway 2) → Shimen District Sports Center turnaround → Qingshui Road (Provincial Highway 2) → Left turn onto Huangqing Road → Right turn onto Huanggang Road → Jinshan Youth Activity Center → Huanggang Road → Left turn onto Minsheng Road → Right turn onto Jiatou Road → Left turn onto Xiashe Road (Provincial Highway 2 Jijin Highway) → Dapeng Police Station → Wanli Tunnel → Finish.

The practical significance of this route is clear: the first half is more exposed to the coastal wind field, and while the second half theoretically offers a better chance to “run it back,” it is not a simple out-and-back straight line. Therefore, negative splits cannot rely on luck for a tailwind — they must depend on restraint in the first half and execution in the second half.

1. First, Define Negative Splits Correctly for WanjinShi: Not Slow-First-Then-Explode, but Conserve-First-Then-Strengthen

Many runners, when talking about negative splits, immediately interpret it as “run the first half a bit slower, run the second half a bit faster.” This definition is correct in textbooks, but it’s too crude for WanjinShi.

For WanjinShi, a more precise definition should be:

1. In the first half, do not stubbornly hold target pace in headwinds and exposed sections.
2. In the second half, when wind resistance drops and form and posture remain controllable, gradually convert effort into speed.
3. The real goal is minimal slowdown in the second half, or even a slight acceleration — not deliberately manufacturing a dramatic faster second half.

Recent marathon pacing reviews and negative-split mini-reviews all indicate that steadier pacing, less first-half over-speed, and better energy preservation tend to correlate with better performance. For WanjinShi, this matters even more, because coastal headwinds amplify the cost of any first-half greed.

So, WanjinShi negative splits are not:

• Running the first 21K like a warm-up;
• Starting the race in the second 21K.

Rather, they are:

• Using the first 21K to complete the first part of the race in a way that doesn’t waste energy;
• Using the second 21K to complete the actual racing with form that hasn’t been broken by the wind and a glycogen reserve that’s still intact.

2. Based on the 2026 Official Route, Break WanjinShi into Four Tactical Zones

Without segmenting the course first, WanjinShi can easily become a vague “windy the whole way” blur. The truly effective approach is to translate the official route into tactical language.

1. Start to Wanli Tunnel / Dapeng Police Station: Rhythm-Building Zone

The most common mistake in this section is that, because of the race’s high status, the strong starting atmosphere, and the many elite runners around you, you run the first 3 to 5 kilometers as the most unnecessary over-speed section of the race.

The correct goal here is not to fight for position, but to:

1. Find your true pace group as quickly as possible;
2. Avoid exceeding your target marathon effort before entering the tunnel;
3. Stabilize your breathing, cadence, and arm tension.

2. Dapeng Police Station to Shimen District Sports Center Turnaround: The Main Coastal Headwind Battle Zone

This is the most critical strategic core of the entire race. The official route clearly follows Provincial Highway 2 through Qingshui Road and Danjin Highway toward Shimen, which means the course is exposed for long stretches, with open visibility and a field that easily strings out. If you happen to hit a headwind or quartering headwind in this section, your pace will be significantly disrupted.

3. After the Turnaround to Huangqing Road / Huanggang Road: Rhythm-Rebuilding Zone

Many people assume that after the turnaround, things naturally get easier — but that’s not necessarily true. The reasons are:

1. The wind direction doesn’t always perfectly turn into a tailwind;
2. If you overexerted in the first half, you may not have the capacity to recover after the turnaround;
3. Crowd density, aid stations, and mental relaxation can all disrupt pace management.

What truly matters in this section is re-establishing your position, resetting your form, and reconfirming your nutrition plan — not immediately surging just because the wind feel has shifted slightly.

4. Jiatou Road / Xiashe Road / Back to Dapeng and the Finish: The True Decisive Zone

What actually determines a PB versus a blow-up is usually not the turnaround point itself, but this section after 30K. Whether you did wasted work in the headwind earlier will fully manifest here. This section demands:

1. The ability to maintain stable pelvis and torso control;
2. The ability to finish the final nutrition plan as scheduled;
3. The ability to progressively convert effort into speed, rather than forcing it with surface pace.

3. How to Position in Coastal Headwind Sections: Drafting in Running Isn’t as Dramatic as Cycling, but It’s Absolutely Worth Doing

Running isn’t like cycling — you can’t rely on a full peloton’s draft to save massive wind resistance. But that doesn’t mean drafting has no value. Aerodynamics research indicates that for running, air resistance at moderate-to-high speeds accounts for only a portion of total energy cost, but it’s still enough to affect metabolic expenditure. A 2022 study on the metabolic cost of air resistance in marathon running estimated that a solo runner at roughly a two-hour marathon pace spends about 7.8% of total metabolic power overcoming air resistance. For most amateur runners, although the speed is slower and the percentage is lower, this cost remains meaningful in a prolonged coastal headwind environment.

Three Principles of Drafting

1. Draft “people at your pace,” not “people who look strong”

The most dangerous thing in a headwind section isn’t failing to find a draft — it’s drafting behind the wrong person. If the group ahead is 5 to 10 seconds per kilometer faster than your target pace, what you get isn’t energy savings, but early bankruptcy.

2. Direct headwind: draft directly behind; quartering headwind: draft behind and to the leeward side

For a direct headwind, positioning directly behind the runner ahead is most straightforward; for a quartering headwind, you should shift slightly to the leeward side to avoid exposing half your body to the wind wall. Running can’t fully deploy echelons like road cycling, but fine-tuning your position still makes a difference.

3. Stay safe — don’t cut lines recklessly for a draft

WanjinShi is not a closed training ground. Around aid stations, in dense crowds, or near turnaround points, forcing your way into gaps to find the best draft usually costs more than it gains.

Practical Positioning Table

4. WanjinShi Race-Day Pacing Method: Watch Effort, Watch Power — GPS Instant Pace Ranks Only Third

On a course with as much wind interference as WanjinShi, the least reliable metric is often the instant pace number on your watch. The reasons are simple:

1. GPS is affected by curves, open coastal areas, and signal issues before and after the tunnel;
2. In headwinds, instant pace drops — but a pace drop doesn’t mean you should immediately push harder;
3. Runners in headwind anxiety are most likely to chase the pace because the numbers look bad.

A more sensible hierarchy would be:

1. Tier 1: Target marathon effort / running power
2. Tier 2: Breathing and RPE
3. Tier 3: 5K average pace and official mile markers
4. Tier 4: Instant pace

If You Have Running Power

You can manage by percentage relative to your target marathon power:

If You Don’t Have Running Power

Use RPE and breathing instead:

The most important concept here is: being forced to slow down a few seconds per kilometer in the headwind section is often a reasonable cost; spending an extra 2-3% effort just to defend a number is usually the truly expensive mistake.

5. How to Execute a Negative Split: Don’t Chase Pretty Math, Chase a Controllable Second Half

Many runners interpret a negative split as needing to run the second half two or three minutes faster than the first. That isn’t necessarily reasonable for Wan Jin Shi. A safer approach is to set “range goals.”

Practical Negative Split Principles

1. First half marathon: Be slightly conservative relative to your ideal overall average pace, but not so conservative that you waste a good day.
2. 21K to 30K: Don’t rush to make up all the time lost earlier.
3. After 30K: If form, fueling, and focus are all stable, gradually bring the pace back up.

Three Example Scenarios

The point of this table isn’t that a specific second is absolutely correct, but that: Wan Jin Shi suits a “slightly conservative first half,” not a “bank time in the first half.”

A Practical Model

Suppose your goal is 4:00, with a theoretical average pace of 5:41/km. If you hit significant headwind from 8K to 18K, you can absolutely accept that section at 5:45-5:50/km, provided that:

1. Your heart rate doesn’t spike abnormally;
2. You aren’t overstriding or stiffening your upper body to force it;
3. After the turnaround, you can get back to 5:40-5:41/km;
4. After 32K, you can still hold steady or even go slightly faster.

A race like that is often much closer to the true spirit of a negative split than desperately holding 5:41/km early and then fading to 6:10/km later.

6. Design Fueling and Positioning Together; Don’t Schedule Your Gels During the Messiest Headwind Section

The most common fueling mistake in a race like Wan Jin Shi is that runners know they need to eat, but they schedule it:

1. On the open sections being battered by strong headwind;
2. In crowded areas where the pack is tight;
3. Around the turnaround, where you need to re-establish your rhythm.

The result is:

1. Gel timing gets disrupted;
2. Water isn’t fully consumed;
3. You break formation to open a gel;
4. You either miss a gel or spend extra effort to regain position.

A Better Approach

1. Complete Your Main Fueling 1-2 Kilometers Before Entering the Exposed Headwind Section

Don’t wait until the wind has wrecked your form before you start fumbling for a gel, biting it open, and drinking water.

2. Use Aid Stations as Rhythm Reset Points, Not Sprint Points

Many runners see their pace drop after leaving a station and immediately accelerate to catch up. That ruins fueling absorption and energy management. A better approach: give yourself 20 to 40 seconds after leaving the station to let your rhythm settle naturally, then look at the overall segment pace.

3. Save Caffeine for the Section Where It Really Matters

If you use caffeinated gels, Wan Jin Shi is better suited to deploying them between 28K and 35K, rather than too early in the sections that are mainly about wind resistance and restraint.

7. If the Wind Direction Is Opposite to What You Expected, How to Adjust Your Negative Split Strategy

This is a very real aspect of Wan Jin Shi. You can’t build your entire tactics on the assumption that “outbound is headwind, inbound is tailwind.” The coastal route’s wind direction and gust distribution might give you:

1. Headwind with a crosswind component outbound, crosswind on the return;
2. Comfortable outbound, real headwind on the return;
3. Neither direction easy, just at different angles.

Therefore, a more advanced way to think about Wan Jin Shi is:

Negative Splits Are Not Built on Wind Fantasies, but on Effort Flexibility

You should think like this:

1. If the first half has more wind than expected, accept a more conservative first half;
2. If the first half is unexpectedly favorable, still don’t get greedy, because the second half isn’t guaranteed to be free;
3. If the headwind comes in the second half, you definitely can’t bank time in the first half;
4. If the wind is strong the whole way, shift the goal from “absolute PB” to “best relative execution.”

Decision Table

8. The Five Most Common Mistakes at Wan Jin Shi

1. Treating a Pace Drop in the Headwind as Failure

That’s often just the normal physical cost. The real failure is overexerting because you refuse to accept the pace drop.

2. Thinking Drafting Always Saves Energy

It only works if you follow the right rhythm, the right position, and do it safely. Following the wrong group will only make you blow up earlier.

3. Mistaking a “Comfortable” First Half for Being in Super Form Today

Feeling comfortable in the first half of a marathon is normal, not a superpower. Especially on a coastal course, the real race usually doesn’t start until after 25K.

4. Rushing to Make Up All Lost Time After the Turnaround

This is one of the most typical ways to blow up at Wan Jin Shi. After the turnaround, when the wind feels slightly weaker, you try to make up lost time by running 8 to 10 seconds per kilometer faster, and then the whole thing falls apart after 35K.

5. Not Treating Fueling, Positioning, and Pacing as One Integrated System

A truly mature runner designs all three together, rather than handling each one separately.

9. How to Train in the Two Weeks Before the Race to Execute This Strategy

Executing the Wan Jin Shi strategy can’t rely only on in-race reactions. You need to test two things at least 10 to 14 days before the race:

1. Advanced Progression Long Run

Example:

The goal isn’t to play hero, but to get used to converting effort into speed in the later stages.

2. Steady Run Under Headwind Conditions

If you can find a beach, riverbank, or open stretch of road, do a 60 to 90 minute steady run, deliberately practicing:

1. Keeping cadence steady in headwind;
2. Drafting in a group without stepping on anyone;
3. Drinking and taking gels in the wind;
4. Accepting that the pace will look ugly for a while.

The value of this training is higher than doing one more marathon-pace run without any wind.

10. Conclusion: The High-Standard Way to Run Wan Jin Shi Is Holding Your Judgment in the Headwind

What Wan Jin Shi truly tests is not just your cardio or muscular endurance, but whether you can hold back where it seems you should push, and still have something left to push where it truly matters.

For this race, the most important thing in practice is not a single catchphrase, but the following five steps in order:

1. First, confirm the official course for that edition;
2. Then break the course into segments;
3. Then adjust effort according to wind conditions;
4. Then decide your positioning based on the pack formation;
5. Finally, see whether you can run the second half as a negative split.

If you run Wan Jin Shi as a race of “discipline in the first half, no rushing into the headwind, no missed aid stations, and the ability to press harder in the second half,” then even if your final time is not a textbook dramatic negative split, you will often have run the most mature version of yourself, the one closest to a PB.

This is the core of the Wan Jin Shi practical guide: Stay calm in the headwind, don’t rush after the turnaround, and still be able to make good decisions after 30K—that is the real way to produce a good time on the North Coast.

References and Further Reading

1. 2026 New Taipei City Wan Jin Shi Marathon Competition Regulations.
2. 2026 New Taipei City Wan Jin Shi Marathon Official Race Course Page.
3. New Taipei City Government 2026 Wan Jin Shi Marathon Traffic Control Press Release.
4. Pacing strategies in marathons: A systematic review.
5. Marathon pacing ability: Training characteristics and previous performance associated with paced and unpaced marathon runners.
6. The physiology and psychology of negative splits: insights into optimal marathon pacing strategies.
7. Effects of Weather Parameters on Endurance Running Performance.
8. Oxygen intake in track and treadmill running with observations on the effect of air resistance.
9. The metabolic cost of emulated aerodynamic drag forces in marathon running.
10. Aerodynamic effects and performance improvements of running in drafting formations.

Related Reading

• 【Race Tactics】Wan Jin Shi Marathon Complete Guide: Core Insights into Pack Positioning and Negative Split Pacing Strategies for Coastal Headwind Sections, and Pre-Race Tapering Guide
• 【Course Tactics】Taking on the Wan Jin Shi Marathon: Core Insights into Power and Pacing Management for Pack Positioning and Negative Split Pacing Strategies on Coastal Headwind Sections
• Wan Jin Shi Marathon Guide: Wind Strategy and Aid Station Distribution on the Coastal Course
• Wan Jin Shi Marathon: A Complete Guide to the North Coast Scenery and Wind Speed Challenges