I'm training for the Las Vegas Rock & Roll Half-Marathon in December, as part of Team Challenge (and despirately trying to raise money!) and our training is a 16-week course. I think 5 miles sounds pretty great to be able to do consistantly. I'm only up to 4 miles of walk/run!
Here's a copy of my training schedule:

Run/Walk 16 Week Half Marathon Training
This program is ideal for the individual who has not run before or who has not run consistently within the past 6-8 months and is looking to complete the half marathon distance (13.1miles). This program includes a run/walk ratio component. To start this program you should be able to run/walk 30mins.
|
Week
|
Date
|
Mon
|
Tue
|
Wed
|
Thu
|
Fri
|
Sat
|
Sun
|
|
0
|
Aug 13-Aug 19
|
2 miles
|
off
|
3 miles
|
Off
|
Easy 20min walk
|
30mins as 5/1
|
Active recovery
|
|
1
|
Aug 20-Aug 26
|
4 miles
|
off
|
3 miles
|
KickOff
2 miles
|
Easy 20min walk
|
40mins as 5/1
|
Active recovery
|
|
2
|
Aug 27-Sept 2
|
4 miles
|
off
|
4 miles
|
Off
|
Easy 20min run
|
50mins as 7/1
|
Active recovery
|
|
3
|
Sept 3-Sept 9
|
4 miles
|
off
|
4 miles
|
Off
|
Easy 20min run
|
60mins steady
|
Active recovery
|
|
4
|
Sept 10-Sept 16
|
4 miles
|
off
|
4 miles
|
off
|
Easy25min run
|
4 miles
|
70mins as 9/1
|
|
5
|
Sept 17-Sept23
|
Active recovery
|
off
|
4 miles
|
Off
|
Easy 25min run
|
1:20mins as 9/1
|
Active recovery
|
|
6
|
Sept 24-Sept30
|
4 miles
|
off
|
4 miles
|
Off
|
Easy 25min run
|
45mins steady
|
Active recovery
|
|
7
|
Oct 1-
Oct 7
|
4 miles
|
off
|
3 miles
|
Off
|
Easy 20min walk
|
3 miles
|
1:30 as 9/1
|
|
8
|
Oct 8-
Oct 14
|
Active recovery
|
off
|
5 miles
|
Off
|
Easy 25min run
|
Rest
|
Acumen Race for a Cause 8K
|
|
9
|
Oct 15-Oct 21
|
Active recovery
|
off
|
6 miles
|
Off
|
Easy 30min run
|
1:40 9/1
|
Active recovery
|
|
10
|
Oct 22-Oct 28
|
6 miles
|
off
|
4 miles
|
Off
|
Easy 30min run
|
2hours as 9/1
|
Active recovery
|
|
11
|
Oct 29-Nov 4
|
5 miles
|
off
|
4 miles
|
off
|
Easy 20min run
|
60mins as 9/1
|
Active recovery
|
|
12
|
Nov 5-Nov 11
|
5 miles
|
off
|
4 miles
|
Off
|
Easy 20min run
|
4 miles
|
2:15 hour run
|
|
13
|
Nov 12-Nov 18
|
Active recovery
|
off
|
4 miles
|
Off
|
Easy 20min run
|
2:30 as 9/1
|
Active recovery
|
|
14
|
Nov 19-Nov 25
|
4 miles
|
off
|
3
miles
|
Off
|
Easy 20min run
|
2 miles easy
|
60mins as 9/1
|
|
15
|
Nov 26-Dec 2
|
Active recovery
|
off
|
2
miles
|
Rest
|
Easy 10min to stay loose
|
Team Fun Run
|
Race Day J
|
Run/Walk explained – on your long day (Saturday) you will be doing the time run/walk as listed. For example, week 1 is 5/1, this means to run 5 minutes, then walk 1 minute, then run 5 minutes, walk 1 minute, etc. During the week workouts, you should try to be building up to the next Saturday’s ratio if possible. All run/walkers need to be under a 16 minute mile pace on race day.
Active recovery days – these will be good days to do your core work and some cross training to give the ligaments and tendons a chance to recover from the efforts of the week. Add swimming, biking, etc., just try to keep the effort low and the movement smooth.
Events are in red – It is recommended that you do some training events in order to test your fitness and morning nutrition to ensure you can get breakfast down before a run. These also work well to incorporate into your recovery and adaptation
All runs unless otherwise specified are considered “easy.” This means you are able to converse while you run. It is important that you stretch daily after each run for at least 5 minutes focusing on major muscle groups; and 2 days a week for 20 minutes ideally after your long run Day (Saturday) and your Active Recovery day (Sunday).