Training for Your First Half Marathon (13.1 Miles)

A half marathon is a serious distance — but it's absolutely achievable for recreational runners who respect the process. You should comfortably run a 5K before starting a half plan. If you can't jog 30 minutes yet, build that base first.

Timeline: 8 vs 12 weeks

• ·8 weeks — you've been running consistently 3–4x/week for 3+ months and can do a 6-mile long run
• ·12 weeks — recommended for most first-timers; builds mileage gradually and includes more recovery

Weekly structure

Expect 4 runs per week max: one long run, one quality session (tempo or intervals), and two easy runs. Cross-training fills gaps. The long run is the centerpiece — it peaks around 10–12 miles before taper.

The 10% rule is real

Don't increase total weekly mileage by more than 10% week over week. Half marathon training fails when people jump from 15 miles to 25 miles in one week. Your cardiovascular system adapts faster than your tendons.

Pacing strategy

• ·Easy runs: truly easy — you should feel like you could go much faster
• ·Long runs: 30–90 seconds slower per mile than 5K race pace
• ·Race day: start slower than you think — miles 1–3 should feel almost too comfortable

Mental preparation

At mile 10, your brain will negotiate quitting. This is normal. Break the race into chunks: 5K + 5K + 5K-ish. You've trained for the distance — trust the plan on race day.

Recovery becomes non-negotiable

Sleep, nutrition, and rest days aren't optional at this distance. Two rest days per week or one rest + one active recovery is standard. Ignoring recovery is how half plans end in injury.