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BOSTON MARATHON 2025

Justyna Bereza

Bib: 21083•F

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
Masters (Masters Women)
#0 / 6759
Top 24%
Division (F45-49)
#0 / 1813
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:16
Rank: #14915
Start → 5K
24:16 | 7:49/mi
10K· 6.21 mi
48:21
Rank: #14608 (+307)
5K → 10K
24:05 | 7:45/mi
15K· 9.32 mi
1:12:31
Rank: #14464 (+144)
10K → 15K
24:10 | 7:47/mi
20K· 12.43 mi
1:37:06
Rank: #14376 (+88)
15K → 20K
24:35 | 7:55/mi
Half· 13.11 mi
1:42:33
Rank: #14423 (-47)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:02:09
Rank: #14418 (+5)
Half → 25K
19:36 | 8:05/mi
30K· 18.64 mi
2:28:43
Rank: #14518 (-100)
25K → 30K
26:34 | 8:33/mi
20M
2:40:49
Rank: #14674 (-156)
30K → 20M
12:06 | 8:54/mi
21M
2:50:22
Rank: #14763 (-89)
20M → 21M
9:33 | 9:33/mi
35K· 21.75 mi
2:56:52
Rank: #14799 (-36)
21M → 35K
6:30 | 8:41/mi
23M
3:07:55
Rank: #14811 (-12)
35K → 23M
11:03 | 8:50/mi
24M
3:16:34
Rank: #14814 (-3)
23M → 24M
8:39 | 8:39/mi
40K· 24.85 mi
3:24:03
Rank: #14812 (+2)
24M → 40K
7:29 | 8:45/mi
25.2M
3:27:23
Rank: #14809 (+3)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:35:47
Rank: #14771 (+38)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:33
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:53:14
Pace8:38 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5624:167:4924:16
7:49
-
10K
6.21 mi11:42:0148:217:4724:05
7:45
-0:04
15K
9.32 mi12:06:111:12:317:4724:10
7:47
+0:02
20K
12.43 mi12:30:461:37:067:4924:35
7:55
+0:08
Half
13.11 mi12:36:131:42:337:495:27
7:59
+0:04
25K
15.53 mi12:55:492:02:097:5219:36
8:05
+0:06
30K
18.64 mi13:22:232:28:437:5926:34
8:33
+0:28
20M
20.00 mi13:34:292:40:498:0212:06
8:54
+0:21
21M
21.00 mi13:44:022:50:228:079:33
9:33
+0:39
35K
21.75 mi13:50:322:56:528:086:30
8:41
-0:52
23M
23.00 mi14:01:353:07:558:1011:03
8:50
+0:09
24M
24.00 mi14:10:143:16:348:118:39
8:39
-0:11
40K
24.85 mi14:17:433:24:038:137:29
8:45
+0:06
25.2M
25.20 mi14:21:033:27:238:143:20
9:40
+0:55
Finish
26.22 mi14:29:273:35:478:148:24
8:15
-1:25

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

7:45 /mi

Average Pace

8:14 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:33

61% of race

Time at Steady Pace

1:00:15

28% of race

Time at Slower Pace

24:59

12% of race

Average Pace: 8:14 /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 mi11:17:5624:167:4924:16
7:49
#14915
10K
6.21 mi11:42:0148:217:4724:05
7:45
#14608
15K
9.32 mi12:06:111:12:317:4724:10
7:47
#14464
20K
12.43 mi12:30:461:37:067:4924:35
7:55
#14376
Half
13.11 mi12:36:131:42:337:495:27
7:59
#14423
25K
15.53 mi12:55:492:02:097:5219:36
8:05
#14418
30K
18.64 mi13:22:232:28:437:5926:34
8:33
#14518
20M
20.00 mi13:34:292:40:498:0212:06
8:54
#14674
21M
21.00 mi13:44:022:50:228:079:33
9:33
#14763
35K
21.75 mi13:50:322:56:528:086:30
8:41
#14799
23M
23.00 mi14:01:353:07:558:1011:03
8:50
#14811
24M
24.00 mi14:10:143:16:348:118:39
8:39
#14814
40K
24.85 mi14:17:433:24:038:137:29
8:45
#14812
25.2M
25.20 mi14:21:033:27:238:143:20
9:40
#14809
Finish
26.22 mi14:29:273:35:478:148:24
8:15
#14771
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi149154474447414198(Top 50%)4137(Top 34%)4137(Top 228%)
10K6.21 mi3.10 mi14608+3074305+1694305+16914360(Top 51%)4172(Top 34%)4172(Top 230%)
15K9.32 mi3.11 mi14464+1444237+684237+6814198(Top 50%)4137(Top 34%)4137(Top 228%)
20K12.43 mi3.11 mi14376+884222+154222+1514219(Top 50%)4212(Top 34%)4212(Top 232%)
Half13.11 mi0.68 mi14423-474248-264248-2615840(Top 56%)5075(Top 42%)5075(Top 280%)
25K15.53 mi2.42 mi14418+54286-384286-3814542(Top 51%)4507(Top 37%)4507(Top 249%)
30K18.64 mi3.11 mi14518-1004401-1154401-11515087(Top 53%)4948(Top 40%)4948(Top 273%)
20M20.00 mi1.36 mi14674-1564517-1164517-11616263(Top 57%)5745(Top 47%)5745(Top 317%)
21M21.00 mi1.00 mi14763-894585-684585-6816315(Top 57%)5874(Top 48%)5874(Top 324%)
35K21.75 mi0.75 mi14799-364623-384623-3816623(Top 59%)6119(Top 50%)6119(Top 338%)
23M23.00 mi1.25 mi14811-124659-364659-3615255(Top 54%)5465(Top 45%)5465(Top 301%)
24M24.00 mi1.00 mi14814-34693-344693-3415465(Top 54%)5627(Top 46%)5627(Top 310%)
40K24.85 mi0.85 mi14812+24726-334726-3314936(Top 53%)5481(Top 45%)5481(Top 302%)
25.2M25.20 mi0.35 mi14809+34727-14727-115479(Top 54%)5803(Top 47%)5803(Top 320%)
Finish26.22 mi1.02 mi14771+384740-134740-1314580(Top 51%)5248(Top 43%)5248(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

14198

Females

4137

F45-49

4137

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

14360

Females

4172

F45-49

4172

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

14198

Females

4137

F45-49

4137

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

14219

Females

4212

F45-49

4212

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

15840

Females

5075

F45-49

5075

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14542

Females

4507

F45-49

4507

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

15087

Females

4948

F45-49

4948

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

16263

Females

5745

F45-49

5745

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

16315

Females

5874

F45-49

5874

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16623

Females

6119

F45-49

6119

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15255

Females

5465

F45-49

5465

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

15465

Females

5627

F45-49

5627

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14936

Females

5481

F45-49

5481

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15479

Females

5803

F45-49

5803

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14580

Females

5248

F45-49

5248

Passing Analysis

Category:
Athletes Passed
1997
Passed By
1853
Net Change
+144
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14915
5K → 10K478171+307#14915#14608
10K → 15K261117+144#14608#14464
15K → 20K245157+88#14464#14376
20K → Half2269-47#14376#14423
Half → 25K175170+5#14423#14418
25K → 30K209309-100#14418#14518
30K → 20M96252-156#14518#14674
20M → 21M77166-89#14674#14763
21M → 35K5086-36#14763#14799
35K → 23M112124-12#14799#14811
23M → 24M7073-3#14811#14814
24M → 40K7068+2#14814#14812
40K → 25.2M3936+3#14812#14809
25.2M → Finish9355+38#14809#14771
TOTALS19971853+144
📊

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