There are many horse riding stables around the island. You can go riding on the beach or through the rice fields. This is a great way to get out and see some of the places in Bali on a horse.
There are a couple of stables I Bali where they organize horse riding tours. Most popular being the Umalas Equestrian Resort Bali and another called Tarukan Equestrian Centre.
The Umalas Equestrian Resort Bali
Jalan Lestari 9x, Kerobokan, Kuta, Bali Phone: +62 (361) 731 402 Fax: +62 (361) 731 403 Email: firstname.lastname@example.org Web: http://www.balionhorse.com
Tarukan Equestrian Centre
Jl.Nelayan No.63, Br. Canggu Bali Phone: +62 361 738080 Fax: +62 361 738082 Email: email@example.com Web: http://www.balihorseriding.com
Expect to pay around US$30-$40 for a 60-90 min ride through rice fields and along the beach