1. Complete a 100-mile run

  2. Hold a quiz with 100 questions

  3. Complete a 100-mile cycle

  4. Go without chocolate for 100 days

  5. Swim 100 lengths of a swimming pool

  6. Do 100 press-up

  7. Do a 100-second mannequin challenge


  8. Clean 100 cars

  9. Run 100 laps of your ship (for Navy personnel)

  10. Do 100 pull ups

  11. Write a book with 100 pages

  12. Bake and sell 100 cakes

  13. Take on a 100-mile sponsored walk

  14. Do 100 flips on a trampoline

  15. Make 100 cups of tea (or coffee) for colleagues in your office

  16. Go without beer (or rum) for 100 days

  17. Do 100 sit-ups

  18. Take on the 100 mph Zip Wire (https://www.zipworld.co.uk/adventure/detail/velocity)

  19. Eat 100 Smarties...

  20. Or go without sweets for 100 days!

  21. Hug 100 people

  22. Make and fly 100 kites (for schools)

  23. Do a 100-metre egg and spoon race

  24. Complete 100 blog entries

  25. Do 100 kick ups with a football

  26. Eat 100 Werther’s Originals

  27. Play 100 games of FIFA

  28. Complete 100 passes with a rugby ball with your teammates

  29. Go on 100 dates

  30. Clean 100 windows

  31. Do 100 rounds of Taekwondo

  32. Cut 100 peoples hair

  33. Make and sell 100 sandwiches on a sandwich run at work

  34. Do 100 rounds of Jiu-jitsu

  35. Complete 100 holes of golf

  36. Bench press for 100 reps

  37. Skip for 100 minutes

  38. Row for 100 minutes

  39. High-five 100 random people

  40. Do a handstand for 100 seconds

  41. Sell 100 doughnuts at work

  42. Do the plank for 100 seconds

  43. Lose 100 grams of weight

  44. Eat 100 Jaffa Cakes

  45. Learn 100 words of a new language

  46. Write a poem with 100 words

  47. Bake and sell 100 cookies

  48. Clean 100 pairs of boots at your local sports club

  49. Knit 100 items of clothing

  50. Reach 100 mph while sky-diving

  51. Do 100 burpees

  52. Perform karaoke for 100 seconds

  53. Try to feature as a call-in on Kiss100

  54. Listen to 100 songs, back-to-back

  55. Do a wall-sit for 100 seconds

  56. Tweet 100 celebrities letting them know about #Twickenham100

  57. A sponsored 100-minute silence in your office

  58. 100 handshakes with random people

  59. Complete a nature trail with 100 people

  60. Do a 100-metre wheel-barrow race

  61. Eat 100 fewer calories for 100 days

  62. Serve 100 people at homeless shelter

  63. Kiss 100 people in a kissing booth

  64. Catch 100 Pokémon on PokémonGo

  65. Help pack 100 bags of shopping at a supermarket

  66. Complete 100 throws in a game of bowling

  67. Give up smoking for 100 days

  68. Visit 100 different cities

  69. Organise a charity ball with 100 guests

  70. Film yourself scoring 100 in a round of darts

  71. Play 100 round of Poker

  72. Kick 100 penalties on a rugby pitch

  73. Sell 100 items on eBay

  74. Build 100 origami ships (for schools)

  75. For a ship's company, 100 people saluting to camera

  76. Complete a 100-metre 3-legged race with teammates or colleagues

  77. Play 100 rounds of bingo

  78. Eat 100 cashew nuts in 10 sitting

  79. Walk 100 dogs

  80. Tweet us for 100 consecutive days

  81. Give up wine for 100 days

  82. Complete 100 box-jumps

  83. Blow up 100 balloons and leave them in a colleague's office

  84. Watch 100 episodes of a TV series

  85. Play a game of Spoof with £100 prize money (rules here: https://homepages.warwick.ac.uk/~phscz/misc/spoof.html)

  86. Play a game of touch rugby for 100 minutes

  87. Do 100 good deeds for 100 days

  88. Do the Hakka in your pants for 100 seconds

  89. Massages 100 colleagues

  90. Arrange a party with 100 songs

  91. Face paint 100 faces

  92. Shave 100 heads

  93. Shine 100 shoes

  94. Organise a wine (or port) and cheese night and charge entry of £100 (collectively not individually)

  95. Arrange a second-hand book sale with 100 books

  96. Iron 100 items of clothing

  97. Leave a swear box in your office until you reach £100

  98. Bring 100 biscuits to work and charge someone whenever they reach for the biscuit tin

  99. Hold a lunch for your workplace where everyone has to bring 100 of something

  100. Simply donate £100 to Twickenham 100

Want to take part?