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Mae'r diwrnod mawr wedi cyrraedd! Ceisiwch redeg am 20 munud, cerdded am 1 munud a rhedeg heb stopio nes eich bod chi wedi cwblhau pellter o 5K.
The big day has arrived! Try to run for 20 minutes, walk for 1 minute and run without stopping until you've completed the 5K.
By S4CMae'r diwrnod mawr wedi cyrraedd! Ceisiwch redeg am 20 munud, cerdded am 1 munud a rhedeg heb stopio nes eich bod chi wedi cwblhau pellter o 5K.
The big day has arrived! Try to run for 20 minutes, walk for 1 minute and run without stopping until you've completed the 5K.