Lilly Siem Grønfoss
Women / born 2012
32
starts
249
top FINA
13
personal best events
PP Over The Years
2024: 10.9 / 2025: 6.4 / 2026: 4.0
200m Backstroke Progress
2 swims recordedAll disciplinesBest Improvements
50m Butterfly: -8.6% at Roald Amundsen CUP
100m Butterfly: -7.1% at Bærum Open
100m Breaststroke: -6.7% at Odal Sparebank Open Vår
200m Breaststroke: -6.5% at Odal Sparebank Open Vår
100m Freestyle: -5.7% at Roald Amundsen CUP
PBs
100m Backstroke: 1.38,33
100m Breaststroke: 1.53,65
100m Butterfly: 1.47,53
100m Freestyle: 1.21,27
100m Medley: 1.47,31
200m Backstroke: 3.19,76
200m Breaststroke: 3.53,98
200m Freestyle: 2.58,68
200m Medley: 3.33,74
400m Freestyle: 6.05,92
50m Breaststroke: 1.03,69
50m Butterfly: 45,76
50m Freestyle: 37,10
Top 3 FINA
249 / 400m Freestyle / 6.05,92
238 / 400m Freestyle / 6.11,09
236 / 100m Freestyle / 1.21,27
RA CUP28 Feb 2026 / Sofiemyr
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.47,53 | 1.52,69 | 102 | 0.1 | 4.8 |
| 200m Medley National rankings | 3.33,74 | 3.35,47 | 179 | 2.08 | 0.8 |
| 50m Freestyle National rankings | 37,10 | 39,54 | 192 | 0.15 | 6.6 |
Odal Sparebank Open Vår31 Jan 2026 / Jessheim
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Breaststroke National rankings | 2.01,75 | 1.53,65 | 165 | 10.54 | -6.7 |
| 200m Backstroke National rankings | 3.19,76 | 3.26,46 | 186 | 0.68 | 3.4 |
| 200m Breaststroke National rankings | 4.10,27 | 3.53,98 | 181 | 12.49 | -6.5 |
| 200m Freestyle National rankings | 2.57,24 | 2.58,68 | 235 | 3.59 | 0.8 |
| 50m Freestyle National rankings | 37,10 | 37,69 | 222 | 2.25 | 1.6 |
Bærum Open05 Dec 2025 / Nadderud
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.55,77 | 1.47,53 | 117 | 5.45 | -7.1 |
| 100m Freestyle National rankings | 1.21,27 | 1.21,86 | 231 | 3.63 | 0.7 |
| 200m Backstroke National rankings | 3.28,14 | 3.19,76 | 206 | 12.36 | -4 |
| 200m Breaststroke National rankings | 4.10,27 | DISK | 0 | 0 | n/a |
| 200m Freestyle National rankings | 2.57,24 | 3.03,04 | 218 | 0.98 | 3.3 |
Odal Sparebank Open Høst08 Nov 2025 / Jessheim
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 200m Breaststroke National rankings | 4.10,27 | DISK | 0 | 0 | n/a |
| 200m Medley National rankings | 3.40,96 | 3.33,74 | 184 | 8.89 | -3.3 |
| 400m Freestyle National rankings | 6.05,92 | 6.11,09 | 238 | 2.83 | 1.4 |
Roald Amundsen CUP25 Oct 2025 / Langhus
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Backstroke National rankings | 1.40,49 | 1.38,33 | 165 | 5.79 | -2.1 |
| 100m Freestyle National rankings | 1.26,22 | 1.21,27 | 236 | 19.8 | -5.7 |
| 200m Breaststroke National rankings | 4.23,73 | 4.10,27 | 148 | 7.32 | -5.1 |
| 400m Freestyle National rankings | 6.22,45 | 6.05,92 | 249 | 18.81 | -4.3 |
| 50m Butterfly National rankings | 50,09 | 45,76 | 143 | 8.86 | -8.6 |
| 50m Freestyle National rankings | 38,93 | 37,10 | 233 | 17.32 | -4.7 |
Roald Amundsen CUP01 Mar 2025 / Sofiemyr
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Freestyle National rankings | 1.29,65 | 1.30,84 | 169 | 1.49 | 1.3 |
| 100m Medley National rankings | 1.45,20 | 1.47,31 | 135 | 0.69 | 2 |
| 200m Freestyle National rankings | 3.07,04 | 3.06,34 | 207 | 6.34 | -0.4 |
| 50m Backstroke National rankings | 47,87 | DISK | 0 | 0 | n/a |
| 50m Freestyle National rankings | 39,04 | 39,81 | 188 | 1.34 | 2 |
Aquarama Open07 Jun 2024 / Kristiansand
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Backstroke National rankings | 1.52,68 | 1.57,71 | 96 | 0.11 | 4.5 |
| 200m Freestyle National rankings | 3.14,84 | 3.24,24 | 157 | 0.24 | 4.8 |
| 50m Breaststroke National rankings | 1.03,69 | 88 | 25 | n/a | |
| 50m Butterfly National rankings | 53,22 | 91 | 25 | n/a | |
| 50m Freestyle National rankings | 40,81 | 40,80 | 175 | 4.12 | 0 |