4-Day Tunnel Vision Marathon Training Plan

North Bend, WAAugust 8, 2027

Four runs per week for 18 weeks: two easy runs, one midweek aerobic run, and one long run. The schedule stays fixed; the guidance below shows how to choose terrain, rehearse conditions, and prepare for the Tunnel Vision Marathon course.

The Tunnel Vision Marathon spends all 26.2 miles going downhill on an unpaved rail trail in the Cascades, and partway along you run into the Snoqualmie Tunnel and out the other side. The organizers describe approximately 1,000 feet of net downhill, and the course descends roughly four feet for every one it climbs.

See the full 18-week plan Read the full race guide

Race day: August 8, 2027
18-week window: Around April 4, 2027
Course: Downhill · Point to Point
Peak week: 40 miles
Longest run: 20 miles

Your complete Tunnel Vision Marathon schedule

The 18-week window opens around April 4, 2027. Weeks one through 17 keep the normal Tuesday, Wednesday, Thursday, and Sunday rhythm. Only race week moves so the marathon lands on its actual weekday. If the window has passed, do not skip ahead or cram missed mileage into the time left.

Open any week to see all seven days. Week 1 is open to start.

1Week 1Foundation · 15 mi

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Cross-training

30 min easy cross-training or mobility

Thu

Easy

3 mi relaxed aerobic run

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

6 mi long run, conversational effort

2Week 2Foundation · 17 mi

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Cross-training

30 min easy cross-training or mobility

Thu

Easy

4 mi relaxed aerobic run

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

7 mi long run, conversational effort

3Week 3Recovery week · 15 mi

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Cross-training

Rest or 20 min gentle mobility

Thu

Easy

3 mi relaxed aerobic run

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

6 mi long run, conversational effort

4Week 4Build · 19 mi

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Cross-training

30–40 min easy cross-training

Thu

Easy

5 mi relaxed aerobic run

Fri

Rest

Sat

Easy

3 mi easy run + 4 relaxed strides

Sun

Long run

8 mi long run, conversational effort

5Week 5Build · 22 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

30–40 min easy cross-training

Thu

Easy

5 mi relaxed aerobic run

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

10 mi long run; practice fluids

6Week 6Recovery week · 18 mi

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Cross-training

Rest or 25 min gentle cross-training

Thu

Easy

4 mi relaxed aerobic run

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

8 mi long run, conversational effort

7Week 7Build · 25 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

30–40 min easy cross-training

Thu

Quality

6 mi steady run; final 1 mi at planned marathon effort

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

12 mi long run; practice fuel and fluids

8Week 8Recovery week · 23 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

30 min easy cross-training or mobility

Thu

Easy

5 mi relaxed aerobic run

Fri

Rest

Sat

Easy

4 mi easy run + 4 relaxed strides

Sun

Long run

10 mi long run, conversational effort

9Week 9Build · 29 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

30–40 min easy cross-training

Thu

Quality

7 mi steady run; middle 2 mi at planned marathon effort

Fri

Rest

Sat

Easy

4 mi easy run

Sun

Long run

14 mi long run; use race-day fuel timing

10Week 10Recovery week · 24 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

Rest or 25 min gentle cross-training

Thu

Easy

5 mi relaxed aerobic run

Fri

Rest

Sat

Easy

4 mi easy run

Sun

Long run

11 mi long run, conversational effort

11Week 11Build · 32 mi

Mon

Rest

Tue

Easy

5 mi easy run

Wed

Cross-training

30–40 min easy cross-training

Thu

Quality

7 mi steady run; final 2 mi at planned marathon effort

Fri

Rest

Sat

Easy

4 mi easy run

Sun

Long run

16 mi long run; rehearse fuel, fluids, and kit

12Week 12Recovery week · 26 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

Rest or 25 min gentle cross-training

Thu

Easy

6 mi relaxed aerobic run

Fri

Rest

Sat

Easy

4 mi easy run + 4 relaxed strides

Sun

Long run

12 mi long run, conversational effort

13Week 13Peak week · 36 mi

Mon

Rest

Tue

Easy

5 mi easy run

Wed

Cross-training

30 min easy cross-training or mobility

Thu

Quality

8 mi steady run; middle 3 mi at planned marathon effort

Fri

Rest

Sat

Easy

5 mi easy run

Sun

Long run

18 mi long run; full race-day fueling rehearsal

14Week 14Recovery week · 29 mi

Mon

Rest

Tue

Easy

5 mi easy run

Wed

Cross-training

Rest or 25 min gentle cross-training

Thu

Easy

6 mi relaxed aerobic run

Fri

Rest

Sat

Easy

4 mi easy run

Sun

Long run

14 mi long run, conversational effort

15Week 15Peak week · 40 mi

Mon

Rest

Tue

Easy

6 mi easy run

Wed

Cross-training

30 min easy cross-training or mobility

Thu

Quality

9 mi steady run; middle 4 mi at planned marathon effort

Fri

Rest

Sat

Easy

5 mi easy run

Sun

Long run

20 mi long run; complete race-day rehearsal

16Week 16Taper · 26 mi

Mon

Rest

Tue

Easy

4 mi easy run

Wed

Cross-training

25 min easy cross-training or mobility

Thu

Quality

6 mi relaxed run; 2 mi at planned marathon effort

Fri

Rest

Sat

Easy

4 mi easy run

Sun

Long run

12 mi long run, controlled effort

17Week 17Taper · 18 mi

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Cross-training

Rest or 20 min gentle mobility

Thu

Easy

4 mi relaxed run + 4 short strides

Fri

Rest

Sat

Easy

3 mi easy run

Sun

Long run

8 mi long run, conversational effort

18Week 18Taper · 8 mi + race

Mon

Rest

Tue

Easy

3 mi easy run

Wed

Rest

Rest or 15 min gentle mobility

Thu

Easy

3 mi easy run + 4 short strides

Fri

Rest

Sat

Easy

2 mi shakeout, or rest

Sun

Race

Marathon — 26.2 mi

Week	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Run total
Week 1Foundation	Rest	3 mi easy run	30 min easy cross-training or mobility	3 mi relaxed aerobic run	Rest	3 mi easy run	6 mi long run, conversational effort	15 mi
Week 2Foundation	Rest	3 mi easy run	30 min easy cross-training or mobility	4 mi relaxed aerobic run	Rest	3 mi easy run	7 mi long run, conversational effort	17 mi
Week 3Recovery week	Rest	3 mi easy run	Rest or 20 min gentle mobility	3 mi relaxed aerobic run	Rest	3 mi easy run	6 mi long run, conversational effort	15 mi
Week 4Build	Rest	3 mi easy run	30–40 min easy cross-training	5 mi relaxed aerobic run	Rest	3 mi easy run + 4 relaxed strides	8 mi long run, conversational effort	19 mi
Week 5Build	Rest	4 mi easy run	30–40 min easy cross-training	5 mi relaxed aerobic run	Rest	3 mi easy run	10 mi long run; practice fluids	22 mi
Week 6Recovery week	Rest	3 mi easy run	Rest or 25 min gentle cross-training	4 mi relaxed aerobic run	Rest	3 mi easy run	8 mi long run, conversational effort	18 mi
Week 7Build	Rest	4 mi easy run	30–40 min easy cross-training	6 mi steady run; final 1 mi at planned marathon effort	Rest	3 mi easy run	12 mi long run; practice fuel and fluids	25 mi
Week 8Recovery week	Rest	4 mi easy run	30 min easy cross-training or mobility	5 mi relaxed aerobic run	Rest	4 mi easy run + 4 relaxed strides	10 mi long run, conversational effort	23 mi
Week 9Build	Rest	4 mi easy run	30–40 min easy cross-training	7 mi steady run; middle 2 mi at planned marathon effort	Rest	4 mi easy run	14 mi long run; use race-day fuel timing	29 mi
Week 10Recovery week	Rest	4 mi easy run	Rest or 25 min gentle cross-training	5 mi relaxed aerobic run	Rest	4 mi easy run	11 mi long run, conversational effort	24 mi
Week 11Build	Rest	5 mi easy run	30–40 min easy cross-training	7 mi steady run; final 2 mi at planned marathon effort	Rest	4 mi easy run	16 mi long run; rehearse fuel, fluids, and kit	32 mi
Week 12Recovery week	Rest	4 mi easy run	Rest or 25 min gentle cross-training	6 mi relaxed aerobic run	Rest	4 mi easy run + 4 relaxed strides	12 mi long run, conversational effort	26 mi
Week 13Peak week	Rest	5 mi easy run	30 min easy cross-training or mobility	8 mi steady run; middle 3 mi at planned marathon effort	Rest	5 mi easy run	18 mi long run; full race-day fueling rehearsal	36 mi
Week 14Recovery week	Rest	5 mi easy run	Rest or 25 min gentle cross-training	6 mi relaxed aerobic run	Rest	4 mi easy run	14 mi long run, conversational effort	29 mi
Week 15Peak week	Rest	6 mi easy run	30 min easy cross-training or mobility	9 mi steady run; middle 4 mi at planned marathon effort	Rest	5 mi easy run	20 mi long run; complete race-day rehearsal	40 mi
Week 16Taper	Rest	4 mi easy run	25 min easy cross-training or mobility	6 mi relaxed run; 2 mi at planned marathon effort	Rest	4 mi easy run	12 mi long run, controlled effort	26 mi
Week 17Taper	Rest	3 mi easy run	Rest or 20 min gentle mobility	4 mi relaxed run + 4 short strides	Rest	3 mi easy run	8 mi long run, conversational effort	18 mi
Week 18Taper	Rest	3 mi easy run	Rest or 15 min gentle mobility	3 mi easy run + 4 short strides	Rest	2 mi shakeout, or rest	Marathon — 26.2 mi	8 mi + race

This free plan is complete, fixed, and ready to use.

It begins at 15 miles per week, peaks at 40, and asks you to manage schedule changes and missed training yourself.

A Stride plan ranks from your running, then dates to race day.

Current mileage, recent longest run, marathon experience, goal, and available days decide which plans rank first.

Build My Plan

How to use this plan for Tunnel Vision Marathon

The mileage builds your engine. Your long-run route, pacing, fueling, and clothing rehearsals make that fitness specific to this race.

How to train for the Tunnel Vision Marathon

Train your quads to absorb downhill running, because that's the whole race. A runner who prepares for this course on flat roads shows up with fit lungs, a good heart rate and legs that stop working after mile 18, when a couple of hours of accumulated descent has done its damage. No amount of aerobic fitness substitutes for that specific durability.

Start early and build gradually. From about 12 weeks out, put two to four miles of sustained gentle downhill into one run a week at goal effort, adding distance rather than steepness as you go. Run it with a quick, short stride and let gravity work instead of braking. Real soreness the first few times is the point of the exercise.

Then rehearse the surface. This is a trail race, not a road race, so do a meaningful share of that downhill work on packed gravel or dirt. Unpaved footing asks more of your stabilizers and slightly changes your stride, and finding that out on race day while descending is a bad plan.

Last, practise restraint in the first hour. The grade will hand you splits that look like a breakthrough. Pick a goal effort, run the first ten miles at it even when the watch says you could give more, and you'll still have quads at mile 22 when everyone around you doesn't.

Keep the plan honest. This free schedule contains no speedwork. Apply the course guidance through route choice and race rehearsal without turning easy days into extra workouts. If your goal calls for marathon-pace work, compare it with First Marathon Plus.

Match the terrain

Rehearse race morning

Race morning at the start usually runs near 58F, clear, with humidity around 81% and almost no wind, and the day climbs toward an average high near 77F. Because the course finishes several hundred feet lower than it starts, you finish warmer than you began, and a slower finish means running the last hour in real August heat. Plan your fluids around the finish, not the start line.

Prepare for the hard part

Miles 18 to the finish, when the gentle grade that handed you free speed for two hours has emptied your quads and every remaining downhill step costs more than the last.

Check the starting line before you commit.

Beginner-friendly does not mean couch-to-marathon. Week one asks for four runs, 15 total miles, and a six-mile long run.

Fifteen miles in week one is close to the volume you already handle.
You can protect four run days most weeks, including a weekend long run.
Your priority is a steady first-marathon build without speedwork.
You can start around April 4, 2027 without forcing the early weeks.

Tunnel Vision Marathon course facts

Course: Point to Point · Downhill · Trail
Elevation gain / loss: 267 ft gain, 1,137 ft loss
Net elevation drop: About 870 ft lower at the finish than the start
Highest / lowest point: 2,578 ft / 1,696 ft
Marathon finishers: 235 in 2026 (very small field)
Boston qualifier: Certified Boston qualifying course
Finishers running a qualifying time: 20.4% in 2026
Typical race morning: 58°F at the start, 81% humidity, clear
Race day high / low: 77°F / 54°F on average

Sources

Tunnel Vision Marathon questions, answered.

When should I start this 18-week Tunnel Vision Marathon plan?

The 2027 Tunnel Vision Marathon is scheduled for August 8, 2027, so the 18-week window opens around April 4, 2027. Weeks one through 17 keep the normal weekly rhythm and Sunday long run; only the final race week shifts to the event's actual weekday. If that date has already passed, do not compress 18 weeks of mileage into a shorter window.

How should I adapt the four-day plan for the Tunnel Vision Marathon course?

Use some of your Tunnel Vision Marathon long runs to practice controlled descending on tired legs. Add downhill exposure gradually; the goal is durable quads, not turning every easy run into a hard one. Train your quads to absorb downhill running, because that's the whole race. A runner who prepares for this course on flat roads shows up with fit lungs, a good heart rate and legs that stop working after mile 18, when a couple of hours of accumulated descent has done its damage. No amount of aerobic fitness substitutes for that specific durability.

Is four days a week enough to train for the Tunnel Vision Marathon?

Four run days can be enough when 15 miles in week one is not a sudden jump and you can protect the long run most weeks. This schedule builds to a 40-mile peak and a 20-mile long run. A runner chasing an aggressive time or already supporting more volume may fit a higher-mileage plan better.

How steep is the Tunnel Vision Marathon?

Gentle but constant. The race describes approximately 1,000 feet of net downhill spread across 26.2 miles of rail trail, descending roughly four feet for every one it climbs. No section is steep. The difficulty is that the descent never stops, so your quads do the same eccentric work for the entire race.

Is the Tunnel Vision Marathon a good Boston qualifier?

Yes, one of the better ones. 20.4% of finishers ran qualifying times in 2026, 33.5% in 2025 and 34.6% in 2024. The organizers state the marathon carries no time penalty under Boston's net downhill rules, though that ruling is worth confirming with the BAA for your entry year.

The same four-day schedule, shaped around the course ahead.

Choose your race for its current date, course profile, typical race-morning conditions, and specific long-run guidance.