5K to 10K Training Plan: 8 Weeks

The best way to move from 5K to 10K is to spend eight weeks extending your long run, adding one controlled tempo workout, and keeping the rest of your mileage easy. Start with a base where 3 miles feels comfortable, then build toward a 6.5- to 7-mile long run. The 10K rewards patience, rhythm, and aerobic strength more than raw sprint speed.

What changes when you double the distance

A 5K can be raced hard from early on, but a 10K asks you to manage effort for twice as long. You need better endurance, a slightly more conservative start, and more comfort near threshold effort. Your training should reflect that shift. Keep some fast running, but make the main focus longer easy runs and sustained controlled work.

Weekly structure

• Easy run: 25 to 40 minutes at conversational effort.
• Tempo workout: 15 to 25 minutes comfortably hard, or broken into intervals.
• Long run: build from 4 miles to about 7 miles.
• Optional short run: 20 to 30 minutes easy with 4 to 6 strides.
• Rest or cross-training: at least one full rest day per week.

8-week progression

1. Weeks 1-2: long run 4 to 4.5 miles, plus 3 x 5 minutes tempo.
2. Weeks 3-4: long run 5 to 5.5 miles, plus 20 minutes steady.
3. Weeks 5-6: long run 6 to 6.5 miles, plus 4 x 1 kilometer at 10K effort.
4. Week 7: long run 7 miles, but keep the rest of the week controlled.
5. Week 8: reduce volume, run short strides, and race the 10K.

Pacing your first 10K

Use your recent 5K to estimate 10K pace, but be conservative. Many runners start around 15 to 25 seconds per mile slower than 5K pace, then adjust by effort. In the race, hold back through mile one, find rhythm through miles two to four, and compete from mile five onward. Even pacing usually beats a brave start followed by survival jogging.