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BOSTON MARATHON 2025

Elizabeth Swierzbinski

Bib: 7075•F

DE

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 24%
Gender (Female)
#0 / 12228
Top 7%
Division (F18-39)
#0 / 5469
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:12
Rank: #6528
Start → 5K
21:12 | 6:49/mi
10K· 6.21 mi
42:49
Rank: #7092 (-564)
5K → 10K
21:37 | 6:57/mi
15K· 9.32 mi
1:04:27
Rank: #7201 (-109)
10K → 15K
21:38 | 6:58/mi
20K· 12.43 mi
1:26:19
Rank: #7154 (+47)
15K → 20K
21:52 | 7:02/mi
Half· 13.11 mi
1:31:05
Rank: #7179 (-25)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:48:08
Rank: #7009 (+170)
Half → 25K
17:03 | 7:02/mi
30K· 18.64 mi
2:10:53
Rank: #6810 (+199)
25K → 30K
22:45 | 7:19/mi
20M
2:21:13
Rank: #6766 (+44)
30K → 20M
10:20 | 7:36/mi
21M
2:29:25
Rank: #6788 (-22)
20M → 21M
8:12 | 8:12/mi
35K· 21.75 mi
2:35:04
Rank: #6836 (-48)
21M → 35K
5:39 | 7:33/mi
23M
2:44:38
Rank: #6811 (+25)
35K → 23M
9:34 | 7:38/mi
24M
2:52:02
Rank: #6764 (+47)
23M → 24M
7:24 | 7:24/mi
40K· 24.85 mi
2:58:29
Rank: #6732 (+32)
24M → 40K
6:27 | 7:33/mi
25.2M
3:01:20
Rank: #6719 (+13)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:08:47
Rank: #6714 (+5)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:05
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time1:37:42
Pace7:27 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0521:126:4921:12
6:49
-
10K
6.21 mi10:48:4242:496:5321:37
6:57
+0:08
15K
9.32 mi11:10:201:04:276:5521:38
6:58
+0:01
20K
12.43 mi11:32:121:26:196:5721:52
7:02
+0:04
Half
13.11 mi11:36:581:31:056:574:46
6:59
-0:03
25K
15.53 mi11:54:011:48:086:5817:03
7:02
+0:03
30K
18.64 mi12:16:462:10:537:0122:45
7:19
+0:17
20M
20.00 mi12:27:062:21:137:0410:20
7:36
+0:17
21M
21.00 mi12:35:182:29:257:078:12
8:12
+0:36
35K
21.75 mi12:40:572:35:047:085:39
7:33
-0:39
23M
23.00 mi12:50:312:44:387:099:34
7:38
+0:05
24M
24.00 mi12:57:552:52:027:107:24
7:24
-0:14
40K
24.85 mi13:04:222:58:297:116:27
7:33
+0:09
25.2M
25.20 mi13:07:133:01:207:122:51
8:16
+0:43
Finish
26.22 mi13:14:403:08:477:127:27
7:19
-0:57

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

6:49 /mi

Average Pace

7:12 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:08

57% of race

Time at Steady Pace

37:36

20% of race

Time at Slower Pace

43:03

23% of race

Average Pace: 7:12 /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 mi10:27:0521:126:4921:12
6:49
#6528
10K
6.21 mi10:48:4242:496:5321:37
6:57
#7092
15K
9.32 mi11:10:201:04:276:5521:38
6:58
#7201
20K
12.43 mi11:32:121:26:196:5721:52
7:02
#7154
Half
13.11 mi11:36:581:31:056:574:46
6:59
#7179
25K
15.53 mi11:54:011:48:086:5817:03
7:02
#7009
30K
18.64 mi12:16:462:10:537:0122:45
7:19
#6810
20M
20.00 mi12:27:062:21:137:0410:20
7:36
#6766
21M
21.00 mi12:35:182:29:257:078:12
8:12
#6788
35K
21.75 mi12:40:572:35:047:085:39
7:33
#6836
23M
23.00 mi12:50:312:44:387:099:34
7:38
#6811
24M
24.00 mi12:57:552:52:027:107:24
7:24
#6764
40K
24.85 mi13:04:222:58:297:116:27
7:33
#6732
25.2M
25.20 mi13:07:133:01:207:122:51
8:16
#6719
Finish
26.22 mi13:14:403:08:477:127:27
7:19
#6714
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi65285775777404(Top 26%)841(Top 7%)841(Top 15%)
10K6.21 mi3.10 mi7092-564715-138715-1387655(Top 27%)887(Top 7%)887(Top 16%)
15K9.32 mi3.11 mi7201-109748-33748-337404(Top 26%)841(Top 7%)841(Top 15%)
20K12.43 mi3.11 mi7154+47756-8756-87124(Top 25%)813(Top 7%)813(Top 15%)
Half13.11 mi0.68 mi7179-25759-3759-37551(Top 27%)920(Top 8%)920(Top 17%)
25K15.53 mi2.42 mi7009+170731+28731+286544(Top 23%)734(Top 6%)734(Top 13%)
30K18.64 mi3.11 mi6810+1997317316592(Top 23%)870(Top 7%)870(Top 16%)
20M20.00 mi1.36 mi6766+44743-12743-127723(Top 27%)1426(Top 12%)1426(Top 26%)
21M21.00 mi1.00 mi6788-22771-28771-288601(Top 30%)1975(Top 16%)1975(Top 36%)
35K21.75 mi0.75 mi6836-48799-28799-289024(Top 32%)2118(Top 17%)2118(Top 39%)
23M23.00 mi1.25 mi6811+25830-31830-317523(Top 26%)1614(Top 13%)1614(Top 30%)
24M24.00 mi1.00 mi6764+47844-14844-147055(Top 25%)1469(Top 12%)1469(Top 27%)
40K24.85 mi0.85 mi6732+32858-14858-147063(Top 25%)1565(Top 13%)1565(Top 29%)
25.2M25.20 mi0.35 mi6719+13876-18876-187481(Top 26%)1821(Top 15%)1821(Top 33%)
Finish26.22 mi1.02 mi6714+5896-20896-207860(Top 28%)2001(Top 16%)2001(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7404

Females

841

F18-39

841

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7655

Females

887

F18-39

887

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7404

Females

841

F18-39

841

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

7124

Females

813

F18-39

813

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7551

Females

920

F18-39

920

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6544

Females

734

F18-39

734

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6592

Females

870

F18-39

870

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7723

Females

1426

F18-39

1426

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8601

Females

1975

F18-39

1975

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

9024

Females

2118

F18-39

2118

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7523

Females

1614

F18-39

1614

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7055

Females

1469

F18-39

1469

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7063

Females

1565

F18-39

1565

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7481

Females

1821

F18-39

1821

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7860

Females

2001

F18-39

2001

Passing Analysis

Category:
Athletes Passed
1408
Passed By
1594
Net Change
-186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6528
5K → 10K54618-564#6528#7092
10K → 15K106215-109#7092#7201
15K → 20K161114+47#7201#7154
20K → Half934-25#7154#7179
Half → 25K20333+170#7179#7009
25K → 30K27677+199#7009#6810
30K → 20M10965+44#6810#6766
20M → 21M7799-22#6766#6788
21M → 35K3482-48#6788#6836
35K → 23M10176+25#6836#6811
23M → 24M9851+47#6811#6764
24M → 40K7846+32#6764#6732
40K → 25.2M4330+13#6732#6719
25.2M → Finish5954+5#6719#6714
TOTALS14081594-186
📊

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