diff --git a/pkg/training/error.go b/pkg/training/error.go
index 69ca6fe..a9bdc11 100644
--- a/pkg/training/error.go
+++ b/pkg/training/error.go
@@ -3,5 +3,6 @@ package training
 import "errors"
 
 var (
-	ErrTrainingNotFound = errors.New("training not found")
+	ErrTrainingNotFound     = errors.New("training not found")
+	ErrTrainingDateNotFound = errors.New("training date not found")
 )
diff --git a/pkg/training/model.go b/pkg/training/model.go
index eb3c1b9..e129fb2 100644
--- a/pkg/training/model.go
+++ b/pkg/training/model.go
@@ -1,6 +1,8 @@
 package training
 
 import (
+	"time"
+
 	"github.com/google/uuid"
 	"github.com/shopspring/decimal"
 	"gitlab.mareshq.com/hq/yggdrasil/internal/currency"
@@ -32,3 +34,28 @@ const (
 	OpenTrainingPrice      TrainingPriceType = "OPEN"
 	CorporateTrainingPrice TrainingPriceType = "CORPORATE"
 )
+
+type TrainingDateID = uuid.UUID
+
+func NewTrainingDateID() TrainingDateID {
+	return uuid.Must(uuid.NewV7())
+}
+
+type TrainingDate struct {
+	trainingID TrainingID
+
+	ID        TrainingDateID
+	Date      time.Time
+	StartTime time.Time
+	Days      int8
+	IsOnline  bool
+	Location  string
+	Address   string
+	Capacity  int8
+	Price     TrainingDatePrice
+}
+
+type TrainingDatePrice struct {
+	Amount   decimal.Decimal
+	Currency currency.Currency
+}
diff --git a/pkg/training/repository.go b/pkg/training/repository.go
index 2e4fce0..5fc2313 100644
--- a/pkg/training/repository.go
+++ b/pkg/training/repository.go
@@ -242,3 +242,104 @@ func (r *InMemoryTrainingRepository) Delete(id TrainingID) error {
 	delete(r.trainings, id)
 	return nil
 }
+
+type TrainingDateRepository interface {
+	Create(trainingID TrainingID, trainingDate *TrainingDate) error
+	FindByID(id TrainingDateID) (*TrainingDate, error)
+	FindAll() ([]TrainingDate, error)
+	FindAllByTrainingID(trainingID TrainingID) ([]TrainingDate, error)
+	Update(trainingDate *TrainingDate) error
+	Delete(id TrainingDateID) error
+}
+
+type InMemoryTrainingDateRepository struct {
+	trainingDates   map[TrainingDateID]TrainingDate
+	trainingToDates map[TrainingID][]TrainingDateID
+
+	lock sync.RWMutex
+}
+
+func NewInMemoryTrainingDateRepository() *InMemoryTrainingDateRepository {
+	return &InMemoryTrainingDateRepository{
+		trainingDates:   make(map[TrainingDateID]TrainingDate),
+		trainingToDates: make(map[TrainingID][]TrainingDateID),
+	}
+}
+
+func (r *InMemoryTrainingDateRepository) Create(trainingID TrainingID, trainingDate *TrainingDate) error {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+
+	trainingDate.ID = NewTrainingDateID()
+	trainingDate.trainingID = trainingID
+
+	r.trainingDates[trainingDate.ID] = *trainingDate
+	r.trainingToDates[trainingID] = append(r.trainingToDates[trainingID], trainingDate.ID)
+	return nil
+}
+
+func (r *InMemoryTrainingDateRepository) FindByID(id TrainingDateID) (*TrainingDate, error) {
+	r.lock.RLock()
+	defer r.lock.RUnlock()
+
+	date, ok := r.trainingDates[id]
+	if !ok {
+		return nil, ErrTrainingDateNotFound
+	}
+	return &date, nil
+}
+
+func (r *InMemoryTrainingDateRepository) FindAll() ([]TrainingDate, error) {
+	r.lock.RLock()
+	defer r.lock.RUnlock()
+
+	dates := make([]TrainingDate, len(r.trainingDates))
+	for _, date := range r.trainingDates {
+		dates = append(dates, date)
+	}
+
+	return dates, nil
+}
+
+func (r *InMemoryTrainingDateRepository) FindAllByTrainingID(trainingID TrainingID) ([]TrainingDate, error) {
+	r.lock.RLock()
+	defer r.lock.RUnlock()
+
+	dates := make([]TrainingDate, 0)
+	for _, id := range r.trainingToDates[trainingID] {
+		dates = append(dates, r.trainingDates[id])
+	}
+
+	return dates, nil
+}
+
+func (r *InMemoryTrainingDateRepository) Update(trainingDate *TrainingDate) error {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+
+	oldDate := r.trainingDates[trainingDate.ID]
+	trainingDate.trainingID = oldDate.trainingID
+	r.trainingDates[trainingDate.ID] = *trainingDate
+	return nil
+}
+
+func (r *InMemoryTrainingDateRepository) Delete(id TrainingDateID) error {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+
+	date, ok := r.trainingDates[id]
+	if !ok {
+		return ErrTrainingDateNotFound
+	}
+
+	delete(r.trainingDates, id)
+	dates := r.trainingToDates[date.trainingID]
+	for idx, d := range dates {
+		if d == id {
+			r.trainingToDates[date.trainingID] = append(dates[:idx], dates[idx+1:]...)
+			break
+		}
+	}
+
+	return nil
+}