If woolly mammoths had mastered the triple Lutz, they would've made it out of the Ice Age and into the Bronze Age, if not the Silver or Gold Age. Ensure your long-term survival with today's Groupon to Castle Ice Arena in Renton. Choose from the following options:

• For $10, you get two public-skate admissions and skate rentals if redeemed Friday–Sunday, or three admissions and skate rentals if redeemed Monday–Thursday (up to a $24 value).
• For $55, you get a learn-to-skate summer-series class (a $110 value), beginning at the end of June and running through the second week of August. This option is valid for the Groupon–exclusive sessions scheduled for Tuesdays from 5:30 p.m. to 6 p.m.
• For $62, you get birthday-party package A for up to 10 people (up to a $135 value).

At Castle Ice Arena, gleeful blade runners glide and twirl across an expansive ice-rink tundra. Like time-crunched chefs after a butter spill, skaters traverse slippery terrain with zest during public-skating sessions, held seven days a week. Footworkers-in-progress can enroll in learn-to-skate lessons, during which graceful toe tutors reveal spin secrets to children and adults. Today's deal is valid for instruction in levels 1–8, so beginners can master basic swizzling and hopping and more advanced skaters can learn backward crossovers and faux-humble medal acceptance. After 30 minutes of on-ice instruction, students are welcome to hone their newly acquired skills during postlesson practice time.

Birthday boys and girls can cap off their latest trips around the sun in style with a Castle Ice Arena party package. Up to 10 revelers grab their free skate rentals and hit the ice for the duration of the day's public-skating session (additional guests $7/person). During the hour of party-room time, honorees can open presents and slap out the candles among balloons and festive decorations. Guests also get to tear into complimentary goodie bags and walk away with a free skate-rental coupon for their next icy venture.

Reviews

Six Insider Pagers give Castle Ice Arena an average of 4 stars, and seven Yelpers give the rink a 4.5-star average:

• Castle Ice is a great place to spend some free time when there is nothing else to do or on those rainy Seattle days. – Terry H., Insider Pages
• Great skating, and went on a hot Saturday afternoon, and it wasn't too busy at all. Excellent afternoon for the kiddos. – Michael W., Yelp, 9/12/09