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BOSTON MARATHON 2025

Sarah Cortese

Bib: 9901•F

BC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Female)
#0 / 12228
Top 2%
Division (F18-39)
#0 / 5469
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:35
Rank: #2477
Start → 5K
19:35 | 6:18/mi
10K· 6.21 mi
39:13
Rank: #2505 (-28)
5K → 10K
19:38 | 6:19/mi
15K· 9.32 mi
58:58
Rank: #2554 (-49)
10K → 15K
19:45 | 6:21/mi
20K· 12.43 mi
1:19:08
Rank: #2657 (-103)
15K → 20K
20:10 | 6:29/mi
Half· 13.11 mi
1:23:35
Rank: #2717 (-60)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:39:42
Rank: #2855 (-138)
Half → 25K
16:07 | 6:39/mi
30K· 18.64 mi
2:01:55
Rank: #3270 (-415)
25K → 30K
22:13 | 7:09/mi
20M
2:11:44
Rank: #3387 (-117)
30K → 20M
9:49 | 7:13/mi
21M
2:19:29
Rank: #3507 (-120)
20M → 21M
7:45 | 7:45/mi
35K· 21.75 mi
2:24:35
Rank: #3494 (+13)
21M → 35K
5:06 | 6:49/mi
23M
2:33:40
Rank: #3564 (-70)
35K → 23M
9:05 | 7:15/mi
24M
2:40:50
Rank: #3624 (-60)
23M → 24M
7:10 | 7:10/mi
40K· 24.85 mi
2:47:01
Rank: #3656 (-32)
24M → 40K
6:11 | 7:14/mi
25.2M
2:49:51
Rank: #3702 (-46)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
2:57:08
Rank: #3774 (-72)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:35
Pace6:23 /mi
2nd Half
Distance13.11 mi
Time1:33:33
Pace7:08 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:2719:356:1819:35
6:18
-
10K
6.21 mi11:05:0539:136:1919:38
6:19
+0:01
15K
9.32 mi11:24:5058:586:2019:45
6:21
+0:02
20K
12.43 mi11:45:001:19:086:2220:10
6:29
+0:08
Half
13.11 mi11:49:271:23:356:234:27
6:31
+0:02
25K
15.53 mi12:05:341:39:426:2516:07
6:39
+0:08
30K
18.64 mi12:27:472:01:556:3222:13
7:09
+0:30
20M
20.00 mi12:37:362:11:446:359:49
7:13
+0:04
21M
21.00 mi12:45:212:19:296:397:45
7:45
+0:32
35K
21.75 mi12:50:272:24:356:395:06
6:49
-0:56
23M
23.00 mi12:59:322:33:406:419:05
7:15
+0:26
24M
24.00 mi13:06:422:40:506:427:10
7:10
-0:05
40K
24.85 mi13:12:532:47:016:436:11
7:14
+0:04
25.2M
25.20 mi13:15:432:49:516:442:50
8:13
+0:59
Finish
26.22 mi13:23:002:57:086:467:17
7:09
-1:04

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

6:18 /mi

Average Pace

6:46 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:48

59% of race

Time at Steady Pace

1:01:45

35% of race

Time at Slower Pace

10:35

6% of race

Average Pace: 6:45 /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 mi10:45:2719:356:1819:35
6:18
#2477
10K
6.21 mi11:05:0539:136:1919:38
6:19
#2505
15K
9.32 mi11:24:5058:586:2019:45
6:21
#2554
20K
12.43 mi11:45:001:19:086:2220:10
6:29
#2657
Half
13.11 mi11:49:271:23:356:234:27
6:31
#2717
25K
15.53 mi12:05:341:39:426:2516:07
6:39
#2855
30K
18.64 mi12:27:472:01:556:3222:13
7:09
#3270
20M
20.00 mi12:37:362:11:446:359:49
7:13
#3387
21M
21.00 mi12:45:212:19:296:397:45
7:45
#3507
35K
21.75 mi12:50:272:24:356:395:06
6:49
#3494
23M
23.00 mi12:59:322:33:406:419:05
7:15
#3564
24M
24.00 mi13:06:422:40:506:427:10
7:10
#3624
40K
24.85 mi13:12:532:47:016:436:11
7:14
#3656
25.2M
25.20 mi13:15:432:49:516:442:50
8:13
#3702
Finish
26.22 mi13:23:002:57:086:467:17
7:09
#3774
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24771111112688(Top 9%)122(Top 1.0%)122(Top 2%)
10K6.21 mi3.10 mi2505-28112-1112-12553(Top 9%)109(Top 0.9%)109(Top 2%)
15K9.32 mi3.11 mi2554-49113-1113-12688(Top 9%)122(Top 1.0%)122(Top 2%)
20K12.43 mi3.11 mi2657-103116-3116-33086(Top 11%)149(Top 1%)149(Top 3%)
Half13.11 mi0.68 mi2717-60118-2118-23910(Top 14%)217(Top 2%)217(Top 4%)
25K15.53 mi2.42 mi2855-138126-8126-83793(Top 13%)229(Top 2%)229(Top 4%)
30K18.64 mi3.11 mi3270-415165-39165-395621(Top 20%)575(Top 5%)575(Top 11%)
20M20.00 mi1.36 mi3387-117175-10175-105351(Top 19%)591(Top 5%)591(Top 11%)
21M21.00 mi1.00 mi3507-120188-13188-135931(Top 21%)886(Top 7%)886(Top 16%)
35K21.75 mi0.75 mi3494+13190-2190-24256(Top 15%)437(Top 4%)437(Top 8%)
23M23.00 mi1.25 mi3564-70207-17207-175223(Top 18%)737(Top 6%)737(Top 13%)
24M24.00 mi1.00 mi3624-60221-14221-145624(Top 20%)924(Top 8%)924(Top 17%)
40K24.85 mi0.85 mi3656-32235-14235-145249(Top 18%)848(Top 7%)848(Top 16%)
25.2M25.20 mi0.35 mi3702-46241-6241-67173(Top 25%)1689(Top 14%)1689(Top 31%)
Finish26.22 mi1.02 mi3774-72260-19260-196699(Top 24%)1520(Top 12%)1520(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2688

Females

122

F18-39

122

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2553

Females

109

F18-39

109

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2688

Females

122

F18-39

122

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3086

Females

149

F18-39

149

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3910

Females

217

F18-39

217

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3793

Females

229

F18-39

229

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5621

Females

575

F18-39

575

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5351

Females

591

F18-39

591

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5931

Females

886

F18-39

886

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4256

Females

437

F18-39

437

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

5223

Females

737

F18-39

737

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5624

Females

924

F18-39

924

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5249

Females

848

F18-39

848

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7173

Females

1689

F18-39

1689

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6699

Females

1520

F18-39

1520

Passing Analysis

Category:
Athletes Passed
533
Passed By
1830
Net Change
-1297
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2477
5K → 10K98126-28#2477#2505
10K → 15K65114-49#2505#2554
15K → 20K46149-103#2554#2657
20K → Half565-60#2657#2717
Half → 25K33171-138#2717#2855
25K → 30K29444-415#2855#3270
30K → 20M34151-117#3270#3387
20M → 21M19139-120#3387#3507
21M → 35K4128+13#3507#3494
35K → 23M43113-70#3494#3564
23M → 24M3898-60#3564#3624
24M → 40K3365-32#3624#3656
40K → 25.2M1359-46#3656#3702
25.2M → Finish36108-72#3702#3774
TOTALS5331830-1297
📊

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