You've been cooped up all brutal winter and now it's time to get your butt outside.
How can you not? From festivals to Derby Day to the Broad Street Run, Philly is chock-full of outdoor activities demanding your participation.
We have an hour-by-hour guide of where and what you should be doing:
One Last Run: 4 p.m.
Get a final prep run in on Kelly Drive or Forbidden Drive in Wissahickon Valley before Sunday's Broad Street Run. But keep it short! You don't want to overdo before the big race. BSR
Happy Hour: 5 p.m.
Get a jump on the weekend at Drury Beer Garden in Midtown Village, behind the Greek eatery Opa (1311 Sansom St., 215-545-0170, opaphiladelphia.com). Grab a drink while playing ping-pong or Jenga. If they are packed, hop over to outdoor spots such as Graffiti Bar at Sampan (124 S. 13th St., 215-732-3501, sampanphilly.com) or Fergie's (1214 Sansom St., 215-928-8118, fergies.com). PP
First Friday: 7 p.m.
Stroll through Old City and stop by some galleries during First Friday festivities.
The Center for Art in Wood (141 N. Third St., 215-923-8000, centerforartinwood.org) begins a new exhibition, "Other Selections: Local Artists Respond to the Museum Collection," consisting of 18 artists who work in every medium except wood.
After that, pop over to Snyderman-Works (303 Cherry St., 215-238-9576, snyderman-works.com) for the opening of the retrospective "50 Years of Work," in celebration of the gallery's 50th anniversary.
Then duck into the delightful back garden at Wedge + Fig (160 N. Third St., 267-603-3090, wedgeandfig.com) for some delectable cheeses and sandwiches. BSR, PP
Load Up: 10 a.m.
Stock up on groceries at the Clark Park Farmers' Market (43d St. & Baltimore Ave., 215-243-0555, universitycity.org/farmersmarkets) from 10 a.m. to 2 p.m. Clark Park has a variety of vendors so you can get all the groceries you need to survive for a few days. PP, BSR, FF
Stretch it Out: 11 a.m.
Get ready for Sunday's run (or Saturday's celebrating) at Yoga on the Banks (215-222-6030, schuylkillbanks.org). Practitioners meet every Saturday at 11 a.m. at 25th and Locust Streets. Donations are gratefully accepted. Namaste. PP, BSR
Rittenhouse Row Spring Festival: Noon
Get out of your yoga gear and into your weekend best for the Rittenhouse Row Spring Festival (rittenhouserow.org) on Walnut Street from Broad Street to Rittenhouse Square, rain or shine. The annual festival features street cafes, cooking demonstrations, beer samplings, and the best people-watching of the season.
For the Party Person: Italy's Peroni Brewery will offer complimentary tastings on the 1500 block of Walnut Street. If beer ain't your buzz, check out the Great American Wine Co. lounge. The California company donates to U.S. military charities.
For the Family Friendly: On the 1600 block of Walnut, Philadelphia magazine's family area features kid-friendly activities, giveaways, sweet treats, and prizes for parents.
Lunch Munch: 1 p.m.
Get away from the hubbub of the festival for some peace and quiet off the park. Pub & Kitchen (1946 Lombard St., 215-545-0350) has great sidewalk seating. PP, BSR
Science Explorers: 2 p.m.
Make your way to the Benjamin Franklin Parkway, where the Philadelphia Science Festival Science Carnival (philasciencefestival.org) returns from 10 a.m. to 4 p.m. from North 22d Street to North 20th Street. It features more than 150 exhibitors, including zoo animals, the science of sports, real robots, and chemistry experiments. Don't forget food trucks and live entertainment. FF
South Street Spring Festival: 4 p.m.
Head to the South Street Spring Festival that rages until 8 p.m. on eight blocks of South Street between Front and Eighth Streets (along with Headhouse Plaza), for music, food, drinks, and shopping from 30 restaurants, 40 bands, and more than 150 vendors. FF, BSR, PP
For the Party Person: Strap on your lederhosen and check out Brauhaus Schmitz's third annual Maifest on the 700 block of South Street. Traditional Maifest beers Hofbräu Maibock and Hacker Pschorr Hubertus Bock will flow all afternoon. The ceremonial keg tapping takes place at 2 p.m., with some maypole dancing at 2:45 p.m.
For the Family Friendly: The Kids Zone on the 200 block of South Street will be packed with activities, such as a chalk-art area, while music plays on the Kids Zone stage.
Outside the Kids Zone, look for other child-friendly activities, including free comic books outside Atomic City Comics (638 South St., 215-625-9613, bestphillycomics.com) and floral headband making as part of the Art/Gaze projects outside Philadelphia's Magic Gardens (1020 South St., 215-733-0390, phillymagicgardens.org).
Derby Day: 6 p.m.
Head west to catch the most exciting two minutes in sports. University City's City Taphouse (39th and Walnut Streets, 215-662-0105, citytaphouseucity.com) shows the Kentucky Derby, along with happy-hour prices inside - and there's a big outdoor space for when those two minutes are up. PP, BSR
Carb-loading: 8 p.m.
Runners should eat high-carb foods before a race, so load up on pasta at Little Nonna's (1234 Locust St.). The outside garden is a cozy spot to enjoy Chef Marcie Turney's Italian cuisine. Seating out there is first-come, first-serve. And, hey, even if you aren't running, you can still load up. BSR, PP
Dance: 11 p.m.
If you are still standing by nightfall and don't have to be up early for the race, head to Morgan's Pier (221 N. Columbus Blvd., 215-279-7134, morganspier.com) for the first Saturday of the summer season. Mr. Sonny James spins. PP
Spectate: 8 a.m.
Runners love support from spectators. Temple University, City Hall, and the finish line are some of the most popular cheering zones. "It really helps to have people in less popular sections of the course. A funny sign, a big smile, and a high-five can help a runner through those final tough miles," says runner and City Fit Girl founder Takia McClendon. BSR, FF, PP
Refuel: 10 a.m.
Recharge after the Broad Street Run. Philadelphia Runner and the Fairmount Park Conservancy host the Broad Street Tailgate at the boathouse at FDR Park (1800 Pattison Ave.). Free food from Shake Shack and free beer from Yards Brewing Co. will be available. BSR, FF, PP
Salvaged Beasts: 2 p.m.
After the race, take the kids to the exhibit Second Nature at the Philadelphia Zoo (3400 W. Girard Ave., 215-243-1100, philadelphiazoo.org) a collection of 12 animal-art installations made of recycled materials by artists from around the world, including Maurizio Savini's alligator made from 200 pounds of chewing gum. FF
Sunday Funday: 4 p.m.
Michael Schulson's Independence Beer Garden (100 S. Independence Mall West, phlbeergarden.com) reopened Thursday. The vast, 20,000-square-foot site overlooks the Liberty Bell and Independence National Historic Park, making it the perfect destination to end your 48 hours outside in Philadelphia. BSR, PP
BSR: Broad Street Runner
FF: Family Friendly
PP: Party Person