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BOSTON MARATHON 2025

Iwona Rek

Bib: 12920•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 15%
Division (F18-39)
#0 / 5469
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:16
Rank: #9212
Start → 5K
22:16 | 7:10/mi
10K· 6.21 mi
45:02
Rank: #9865 (-653)
5K → 10K
22:46 | 7:20/mi
15K· 9.32 mi
1:08:00
Rank: #10173 (-308)
10K → 15K
22:58 | 7:24/mi
20K· 12.43 mi
1:30:50
Rank: #9958 (+215)
15K → 20K
22:50 | 7:21/mi
Half· 13.11 mi
1:35:49
Rank: #9957 (+1)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:54:50
Rank: #10376 (-419)
Half → 25K
19:01 | 7:51/mi
30K· 18.64 mi
2:18:45
Rank: #10085 (+291)
25K → 30K
23:55 | 7:42/mi
20M
2:29:14
Rank: #9883 (+202)
30K → 20M
10:29 | 7:43/mi
21M
2:37:42
Rank: #9883
20M → 21M
8:28 | 8:28/mi
35K· 21.75 mi
2:43:29
Rank: #9893 (-10)
21M → 35K
5:47 | 7:44/mi
23M
2:53:11
Rank: #9753 (+140)
35K → 23M
9:42 | 7:45/mi
24M
3:00:32
Rank: #9575 (+178)
23M → 24M
7:21 | 7:21/mi
40K· 24.85 mi
3:07:00
Rank: #9451 (+124)
24M → 40K
6:28 | 7:34/mi
25.2M
3:09:52
Rank: #9390 (+61)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:17:14
Rank: #9281 (+109)
25.2M → Finish
7:22 | 7:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:49
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:41:25
Pace7:44 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5122:167:1022:16
7:10
-
10K
6.21 mi11:14:3745:027:1522:46
7:20
+0:10
15K
9.32 mi11:37:351:08:007:1822:58
7:24
+0:04
20K
12.43 mi12:00:251:30:507:1922:50
7:21
-0:03
Half
13.11 mi12:05:241:35:497:194:59
7:18
-0:03
25K
15.53 mi12:24:251:54:507:2419:01
7:51
+0:33
30K
18.64 mi12:48:202:18:457:2723:55
7:42
-0:09
20M
20.00 mi12:58:492:29:147:2810:29
7:43
+0:01
21M
21.00 mi13:07:172:37:427:318:28
8:28
+0:45
35K
21.75 mi13:13:042:43:297:315:47
7:44
-0:44
23M
23.00 mi13:22:462:53:117:329:42
7:45
+0:01
24M
24.00 mi13:30:073:00:327:317:21
7:21
-0:24
40K
24.85 mi13:36:353:07:007:316:28
7:34
+0:13
25.2M
25.20 mi13:39:273:09:527:322:52
8:19
+0:45
Finish
26.22 mi13:46:493:17:147:327:22
7:14
-1:05

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:10 /mi

Average Pace

7:32 /mi

Slowest Pace

8:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:54

94% of race

Time at Steady Pace

2:52

1% of race

Time at Slower Pace

8:28

4% of race

Average Pace: 7:31 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:51:5122:167:1022:16
7:10
#9212
10K
6.21 mi11:14:3745:027:1522:46
7:20
#9865
15K
9.32 mi11:37:351:08:007:1822:58
7:24
#10173
20K
12.43 mi12:00:251:30:507:1922:50
7:21
#9958
Half
13.11 mi12:05:241:35:497:194:59
7:18
#9957
25K
15.53 mi12:24:251:54:507:2419:01
7:51
#10376
30K
18.64 mi12:48:202:18:457:2723:55
7:42
#10085
20M
20.00 mi12:58:492:29:147:2810:29
7:43
#9883
21M
21.00 mi13:07:172:37:427:318:28
8:28
#9883
35K
21.75 mi13:13:042:43:297:315:47
7:44
#9893
23M
23.00 mi13:22:462:53:117:329:42
7:45
#9753
24M
24.00 mi13:30:073:00:327:317:21
7:21
#9575
40K
24.85 mi13:36:353:07:007:316:28
7:34
#9451
25.2M
25.20 mi13:39:273:09:527:322:52
8:19
#9390
Finish
26.22 mi13:46:493:17:147:327:22
7:14
#9281
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi92121462146210814(Top 38%)2277(Top 19%)2277(Top 42%)
10K6.21 mi3.10 mi9865-6531739-2771739-27710571(Top 37%)2092(Top 17%)2092(Top 38%)
15K9.32 mi3.11 mi10173-3081920-1811920-18110814(Top 38%)2277(Top 19%)2277(Top 42%)
20K12.43 mi3.11 mi9958+2151843+771843+779468(Top 33%)1721(Top 14%)1721(Top 31%)
Half13.11 mi0.68 mi9957+11847-41847-410093(Top 36%)1999(Top 16%)1999(Top 37%)
25K15.53 mi2.42 mi10376-4192074-2272074-22712687(Top 45%)3484(Top 28%)3484(Top 64%)
30K18.64 mi3.11 mi10085+2912001+732001+739192(Top 32%)1919(Top 16%)1919(Top 35%)
20M20.00 mi1.36 mi9883+2021933+681933+688475(Top 30%)1744(Top 14%)1744(Top 32%)
21M21.00 mi1.00 mi98831970-371970-3710255(Top 36%)2730(Top 22%)2730(Top 50%)
35K21.75 mi0.75 mi9893-102004-342004-3410321(Top 36%)2746(Top 22%)2746(Top 50%)
23M23.00 mi1.25 mi9753+1401983+211983+218239(Top 29%)1920(Top 16%)1920(Top 35%)
24M24.00 mi1.00 mi9575+1781935+481935+486761(Top 24%)1370(Top 11%)1370(Top 25%)
40K24.85 mi0.85 mi9451+1241910+251910+257218(Top 25%)1648(Top 13%)1648(Top 30%)
25.2M25.20 mi0.35 mi9390+611901+91901+97774(Top 27%)1963(Top 16%)1963(Top 36%)
Finish26.22 mi1.02 mi9281+1091890+111890+117254(Top 26%)1753(Top 14%)1753(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10814

Females

2277

F18-39

2277

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

10571

Females

2092

F18-39

2092

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10814

Females

2277

F18-39

2277

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9468

Females

1721

F18-39

1721

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

10093

Females

1999

F18-39

1999

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12687

Females

3484

F18-39

3484

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

9192

Females

1919

F18-39

1919

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8475

Females

1744

F18-39

1744

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

10255

Females

2730

F18-39

2730

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

10321

Females

2746

F18-39

2746

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

8239

Females

1920

F18-39

1920

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6761

Females

1370

F18-39

1370

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7218

Females

1648

F18-39

1648

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7774

Females

1963

F18-39

1963

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7254

Females

1753

F18-39

1753

Passing Analysis

Category:
Athletes Passed
1994
Passed By
2056
Net Change
-69
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9212
5K → 10K64716-653#9212#9865
10K → 15K87393-308#9865#10173
15K → 20K28772+215#10173#9958
20K → Half2524+1#9958#9957
Half → 25K72489-419#9957#10376
25K → 30K37886+291#10376#10085
30K → 20M22119+202#10085#9883
20M → 21M97970#9883#9883
21M → 35K6170-10#9883#9893
35K → 23M16929+140#9893#9753
23M → 24M19113+178#9753#9575
24M → 40K13713+124#9575#9451
40K → 25.2M7211+61#9451#9390
25.2M → Finish13324+109#9390#9281
TOTALS19942056-69
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing