10 to 9 in 5 weeks?

i have a half marathon in five weeks. ran an 80 minute 8 mile today is a two hour half possible?

Yes, a 2-hour half marathon is very possible. 

An 80-minute 8-mile run (a 10:00/mile pace) shows a solid aerobic base, and you have five weeks to build race-day speed and endurance to drop your average down to the required 9:09 per mile.

Pacing and Fitness Math

• Your current long run: 8 miles in 80 minutes is an average of 10:00 per mile.
• Target pace: A 2-hour finish requires a steady 9:09 per mile (5:41 per km) for 13.1 miles.
• The gap: You need to shave about 50 seconds per mile off your current steady pace, but you already have more than 60% of the race distance covered.

5-Week Strategy to Break 2 Hours

• Incorporate Race Pace Segments: Do not just run slow miles. Add blocks of 9:00–9:05/mile pace into your mid-week and long runs to teach your body what the target speed feels like.
• Extend the Long Run: Gradually stretch your longest run from 8 miles up to 10 or 11 miles over the next three weeks so 13.1 miles feels within reach.
• Practice Fueling: Use your remaining long runs to test out energy gels or sports drinks every 30 to 40 minutes to train your stomach for race day.
• Taper Properly: Cut back your mileage significantly during the final two weeks before the race so your legs are fresh and fully recovered.

If you want, tell me: What is your typical weekly mileage right now?

20 miles per week

A 20-mile weekly volume provides a strong baseline to safely build toward your sub-2-hour goal over the next month.

5-Week Training Blueprint

To bridge the gap to a 9:09/mile pace, structure your 20 miles per week around three key quality runs, keeping your remaining miles easy.

• Week 1 (This Week): Peak long run of 10 miles (at 10:15 pace). Include a mid-week workout with 3 miles at a 9:00 goal pace.
• Week 2: Peak long run of 11 miles (at 10:15 pace). Include a mid-week workout with 4 miles at a 9:00 goal pace.
• Week 3: Begin taper. Drop long run to 8 miles. Include 3 miles of goal-pace intervals.
• Week 4: Deep taper. Drop long run to 5 miles. Include 2 miles of easy goal-pace practice.
• Week 5 (Race Week): Two short 2-mile shakeout runs early in the week, followed by race day.

Key Workouts to Keep

• The Goal-Pace Tempo: Run 3 to 4 miles continuously at 9:00–9:05 pace during mid-week sessions to build leg speed and mental confidence.
• The Controlled Long Run: Keep your 10 and 11-mile runs mostly easy (10:15–10:30 pace), but try running the final mile at your 9:09 goal pace.

If you are interested, I can: Provide the exact daily schedule for Week 1

daily schedule

Here is your exact 4-day running schedule for Week 1 to maximize your 20 miles without overtraining.

Week 1 Daily Schedule.

• Monday: Rest day. Focus on light stretching or foam rolling.
• Tuesday (Intervals - 4 miles total): 1-mile easy jog warmup. Run 4 x 800-meter repetitions (0.5 miles) at a 8:45/mile pace. Rest 2 minutes between each. 1-mile easy jog cooldown.
• Wednesday: Rest day or 20 minutes of light cross-training (cycling or swimming).
• Thursday (Tempo Run - 5 miles total): 1-mile easy warmup. Run 3 miles continuously at your goal race pace (9:00 to 9:05/mile). 1-mile easy cooldown.
• Friday: Rest day. Complete rest to prepare your legs for the peak distance.
• Saturday (The Long Run - 10 miles): Run 10 miles at a conversational, easy pace (10:15 to 10:30/mile). Try to run the final mile at 9:09 to practice finishing strong.
• Sunday (Recovery - 1 mile): 1 mile of very slow, easy jogging or walking to flush out lactic acid.