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BOSTON MARATHON 2025

Sarah Nawrocki

Bib: 18300•F

GA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:45/mi
24:06
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:48
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:33
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:35:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:41:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
2:00:36
↑ 66↓ 880.2%
30K· 18.64 mi
8:24/mi
2:26:42
↑ 181↓ 1480.2%
20M
8:36/mi
2:38:23
↑ 64↓ 500.2%
21M
9:13/mi
2:47:36
↑ 106↓ 241.6%
35K· 21.75 mi
10:56/mi
2:55:47
↑ 17↓ 861.7%
23M
14:30/mi
3:13:56
↑ 23↓ 630.6%
24M
10:35/mi
3:24:31
↓ 821.3%
40K· 24.85 mi
9:12/mi
3:32:23
↓ 200.3%
25.2M
9:14/mi
3:35:34
↑ 13↓ 160.2%
Finish· 26.22 mi
8:21/mi
3:44:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:18
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time2:02:47
Pace9:22 /mi
📊Positive Split: 21.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0724:067:4524:06
7:45
-
10K
6.21 mi11:38:4947:487:4223:42
7:38
-0:07
15K
9.32 mi12:02:341:11:337:4123:45
7:39
+0:01
20K
12.43 mi12:26:571:35:567:4324:23
7:51
+0:12
Half
13.11 mi12:32:191:41:187:445:22
7:52
+0:01
25K
15.53 mi12:51:372:00:367:4619:18
7:58
+0:06
30K
18.64 mi13:17:432:26:427:5226:06
8:24
+0:26
20M
20.00 mi13:29:242:38:237:5511:41
8:36
+0:12
21M
21.00 mi13:38:372:47:367:599:13
9:13
+0:37
35K
21.75 mi13:46:482:55:478:058:11
10:56
+1:43
23M
23.00 mi14:04:573:13:568:2618:09
14:30
+3:34
24M
24.00 mi14:15:323:24:318:3110:35
10:35
-3:55
40K
24.85 mi14:23:243:32:238:337:52
9:12
-1:23
25.2M
25.20 mi14:26:353:35:348:333:11
9:14
+0:02
Finish
26.22 mi14:35:063:44:058:338:31
8:21
-0:53

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

7:38 /mi

Average Pace

8:33 /mi

Slowest Pace

14:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:07:10

84% of race

Time at Slower Pace

36:55

16% of race

Average Pace: 8:33 /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 mi11:15:0724:067:4524:06
7:45
#14459
10K
6.21 mi11:38:4947:487:4223:42
7:38
#13874
15K
9.32 mi12:02:341:11:337:4123:45
7:39
#13555
20K
12.43 mi12:26:571:35:567:4324:23
7:51
#13537
Half
13.11 mi12:32:191:41:187:445:22
7:52
#13607
25K
15.53 mi12:51:372:00:367:4619:18
7:58
#13564
30K
18.64 mi13:17:432:26:427:5226:06
8:24
#13639
20M
20.00 mi13:29:242:38:237:5511:41
8:36
#13675
21M
21.00 mi13:38:372:47:367:599:13
9:13
#13707
35K
21.75 mi13:46:482:55:478:058:11
10:56
#14454
23M
23.00 mi14:04:573:13:568:2618:09
14:30
#16551
24M
24.00 mi14:15:323:24:318:3110:35
10:35
#17046
40K
24.85 mi14:23:243:32:238:337:52
9:12
#17056
25.2M
25.20 mi14:26:353:35:348:333:11
9:14
#16979
Finish
26.22 mi14:35:063:44:058:338:31
8:21
#16931
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi144594195419513016(Top 46%)3458(Top 28%)3458(Top 63%)
10K6.21 mi3.10 mi13874+5853867+3283867+32813289(Top 47%)3553(Top 29%)3553(Top 65%)
15K9.32 mi3.11 mi13555+3193721+1463721+14613016(Top 46%)3458(Top 28%)3458(Top 63%)
20K12.43 mi3.11 mi13537+183752-313752-3113692(Top 48%)3931(Top 32%)3931(Top 72%)
Half13.11 mi0.68 mi13607-703794-423794-4214901(Top 52%)4579(Top 37%)4579(Top 84%)
25K15.53 mi2.42 mi13564+433804-103804-1013610(Top 48%)4010(Top 33%)4010(Top 73%)
30K18.64 mi3.11 mi13639-753904-1003904-10014163(Top 50%)4467(Top 37%)4467(Top 82%)
20M20.00 mi1.36 mi13675-363953-493953-4914452(Top 51%)4762(Top 39%)4762(Top 87%)
21M21.00 mi1.00 mi13707-324006-534006-5314750(Top 52%)5037(Top 41%)5037(Top 92%)
35K21.75 mi0.75 mi14454-7474425-4194425-41924082(Top 85%)10104(Top 83%)10104(Top 185%)
23M23.00 mi1.25 mi16551-20975667-12425667-124227652(Top 97%)11929(Top 98%)11929(Top 218%)
24M24.00 mi1.00 mi17046-4955986-3195986-31923037(Top 81%)9657(Top 79%)9657(Top 177%)
40K24.85 mi0.85 mi17056-106020-346020-3417362(Top 61%)6780(Top 55%)6780(Top 124%)
25.2M25.20 mi0.35 mi16979+775991+295991+2913201(Top 46%)4620(Top 38%)4620(Top 84%)
Finish26.22 mi1.02 mi16931+485977+145977+1415322(Top 54%)5655(Top 46%)5655(Top 103%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13016

Females

3458

F18-39

3458

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13289

Females

3553

F18-39

3553

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13016

Females

3458

F18-39

3458

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13692

Females

3931

F18-39

3931

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14901

Females

4579

F18-39

4579

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13610

Females

4010

F18-39

4010

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14163

Females

4467

F18-39

4467

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

14452

Females

4762

F18-39

4762

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14750

Females

5037

F18-39

5037

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24082

Females

10104

F18-39

10104

35K→23M

21.8 - 23.0 mi

Top 97%
×5story building
+23ft-63ft

Overall

27652

Females

11929

F18-39

11929

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

23037

Females

9657

F18-39

9657

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17362

Females

6780

F18-39

6780

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13201

Females

4620

F18-39

4620

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15322

Females

5655

F18-39

5655

Passing Analysis

Category:
Athletes Passed
2145
Passed By
4617
Net Change
-2472
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14459
5K → 10K66479+585#14459#13874
10K → 15K38667+319#13874#13555
15K → 20K201183+18#13555#13537
20K → Half1282-70#13537#13607
Half → 25K204161+43#13607#13564
25K → 30K216291-75#13564#13639
30K → 20M115151-36#13639#13675
20M → 21M91123-32#13675#13707
21M → 35K2749-747#13707#14454
35K → 23M72104-2097#14454#16551
23M → 24M14509-495#16551#17046
24M → 40K6575-10#17046#17056
40K → 25.2M814+77#17056#16979
25.2M → Finish8739+48#16979#16931
TOTALS21454617-2472
📊

Passing Visuals

Category:
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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