Half Marathon Training Plan for Women
A half marathon plan that respects female physiology: training load modulation across your cycle, strength integration, and pacing strategy built for women.
The plan, week by week
Minutes per week. Tap a week.The half marathon rewards aerobic engine more than raw speed. The runners who struggle most are those who train like 5K runners, carrying too much intensity and not enough easy aerobic volume. Sustainable progression, quality long runs, and one threshold session per week is the formula that holds up across conditions. This plan is built for runners who want a plan that respects female physiology: the structure, pacing guidelines, and weekly progression are calibrated to your specific situation, not a generic template.
Eating enough around half marathon long runs
Half marathon training is where many women first notice their energy running low. Long runs of 90 minutes to two hours, plus a weekly tempo session, add up to a real rise in what you burn each week, and appetite does not always keep pace. Signs you may not be eating enough include long runs that fade badly, feeling cold or flat for days afterwards, and a cycle that becomes irregular or stops. Have a proper carbohydrate-based meal the evening before a long run, a small breakfast on the morning, and a meal with protein soon after. If your periods change during training, mention it to your GP.
Holding your form in the last 5 km of a half marathon
As long runs stretch past 90 minutes, tired hips and glutes let the knees drift inwards and the stride shorten. For many women training for a half marathon, that is where niggles start. The strength work in this plan targets exactly this, but it helps to check in with yourself during long runs too. In the final third, run tall, keep your steps quick and light, and relax your shoulders. Some runners add a few minutes of glute activation, such as bridges or banded side steps, before heading out. If one side aches late in long runs week after week, have a physiotherapist look at it before it becomes an injury.
Training across the menstrual cycle
Emerging research suggests that hormonal fluctuation across the menstrual cycle meaningfully affects training response. The follicular phase (days 1–14 roughly) tends to support higher intensity and faster recovery; the luteal phase (post-ovulation) is associated with higher perceived effort, elevated core temperature, and slower recovery. Tracking cycle phase alongside training load — and adjusting intensity accordingly — is a practical performance edge. Tell Claude where you are in your cycle and Daash can adapt the week around it.
Iron, fuelling, and energy availability
Female runners have higher rates of iron deficiency than male runners, which directly impairs aerobic performance and recovery. Unexplained fatigue, persistent breathlessness at easy paces, and elevated resting heart rate warrant a blood panel. Separately, low energy availability (under-fuelling relative to training load) is common and suppresses hormones, impairs bone health, and reduces adaptation. Eating enough to support training is as important as the training itself.
Strength work that transfers to running
Hip abductor, glute, and single-leg strength have outsized importance for female runners, who statistically show higher rates of knee and hip injuries related to valgus collapse under load. Two short strength sessions per week — 20–30 minutes of hip-targeted work — reduce injury risk significantly and improve running economy. This plan integrates strength as a non-negotiable alongside run sessions.
Training philosophy
The half marathon rewards aerobic engine more than raw speed. The runners who struggle most are those who train like 5K runners, carrying too much intensity and not enough easy aerobic volume. Sustainable progression, quality long runs, and one threshold session per week is the formula that holds up across conditions.
Questions
How many days per week does this half marathon plan require?
Most sessions in this plan run four to five days per week, including one quality session, a long run, and easy aerobic running. The plan is designed to be adjustable — with Daash, Claude can restructure it around your available days each week.
Do I need a GPS watch to follow this half marathon training plan?
A GPS watch or running app is helpful for tracking pace and distance, but not strictly required. Effort-based running (using a scale of 1–10 perceived exertion) works well for easy runs. For quality sessions where specific paces matter, a watch becomes more valuable.
What should I eat before a long run?
For runs under 60–75 minutes, eating beforehand is optional. For longer runs, a light carbohydrate-based meal two to three hours before the session — oats, toast with banana, or a rice-based option — provides fuel without gastrointestinal issues. Avoid high-fat, high-fibre, or unfamiliar foods on long run mornings.
How does Daash adapt the plan if I miss a session?
Daash sees missed sessions in your Garmin data. Tell Claude why — illness, fatigue, life — and it reworks the coming week: redistributing sessions, reducing volume if needed, or adjusting the next quality session, then updates the workouts on your watch.
Do I need to take gels or nutrition during training for a half marathon?
For long runs over 75–80 minutes, practising race nutrition is valuable. Train with the gels, chews, or drinks available at your target race so your gut is adapted before race day. Do not try a new nutrition product for the first time on race morning.