mapStoreToRoutes.js

const mapStoreToRoutes = (routes, store) => {
  return routes && routes.map(route => {
    return {
      ...route,
      indexRoute: route.indexRoute && {
        ...route.indexRoute,
        onEnter: route.indexRoute.onEnter && function mappedIndexOnEnter(nextState, replaceState, next) {
          route.indexRoute.onEnter(store.dispatch, store.getState(), nextState, replaceState, next);
        },
      },
      childRoutes: mapStoreToRoutes(route.childRoutes, store),
      onEnter: route.onEnter && function mappedOnEnter(nextState, replaceState, next) {
        route.onEnter(store.dispatch, store.getState(), nextState, replaceState, next);
      },
    };
  });
};


// usage:

import { Route, createRoutes } from 'react-router';
import store from './store';

const handlerWithDispatch = (dispatch, state, nextState, replace, callback) => {
  dispatch({ type: 'SOME_ACTION', payload: {} });
  callback();
};

const routes = (
  <Route path="/" component={App} onEnter={handlerWithDispatch} />
);


const routes = mapStoreToRoutes(createRoutes(routes), store);

... 
  <Router routes={routes />
...