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BOSTON MARATHON 2025

Sabrina Nicolai

Bib: 28877•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
36:55
Rank: #28203
Start → 5K
36:55 | 11:53/mi
10K· 6.21 mi
1:15:27
Rank: #28194 (+9)
5K → 10K
38:32 | 12:24/mi
15K· 9.32 mi
1:54:12
Rank: #28125 (+69)
10K → 15K
38:45 | 12:28/mi
20K· 12.43 mi
2:34:10
Rank: #28053 (+72)
15K → 20K
39:58 | 12:52/mi
Half· 13.11 mi
2:42:50
Rank: #28051 (+2)
20K → Half
8:40 | 12:42/mi
25K· 15.53 mi
3:14:38
Rank: #27966 (+85)
Half → 25K
31:48 | 13:07/mi
30K· 18.64 mi
3:56:46
Rank: #27879 (+87)
25K → 30K
42:08 | 13:34/mi
20M
4:15:04
Rank: #27825 (+54)
30K → 20M
18:18 | 13:28/mi
21M
4:28:47
Rank: #27746 (+79)
20M → 21M
13:43 | 13:43/mi
35K· 21.75 mi
4:38:37
Rank: #27740 (+6)
21M → 35K
9:50 | 13:09/mi
23M
4:55:44
Rank: #27725 (+15)
35K → 23M
17:07 | 13:40/mi
24M
5:09:19
Rank: #27721 (+4)
23M → 24M
13:35 | 13:35/mi
40K· 24.85 mi
5:23:06
Rank: #27771 (-50)
24M → 40K
13:47 | 16:07/mi
25.2M
5:29:05
Rank: #27784 (-13)
40K → 25.2M
5:59 | 17:21/mi
Finish· 26.22 mi
5:42:43
Rank: #27796 (-12)
25.2M → Finish
13:38 | 13:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:42:50
Pace12:25 /mi
2nd Half
Distance13.11 mi
Time2:59:53
Pace13:43 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:02:5036:5511:5336:55
11:53
-
10K
6.21 mi12:41:221:15:2712:0938:32
12:24
+0:31
15K
9.32 mi13:20:071:54:1212:1538:45
12:28
+0:04
20K
12.43 mi14:00:052:34:1012:2439:58
12:52
+0:24
Half
13.11 mi14:08:452:42:5012:258:40
12:42
-0:10
25K
15.53 mi14:40:333:14:3812:3231:48
13:07
+0:25
30K
18.64 mi15:22:413:56:4612:4242:08
13:34
+0:27
20M
20.00 mi15:40:594:15:0412:4518:18
13:28
-0:06
21M
21.00 mi15:54:424:28:4712:4813:43
13:43
+0:15
35K
21.75 mi16:04:324:38:3712:499:50
13:09
-0:34
23M
23.00 mi16:21:394:55:4412:5117:07
13:40
+0:31
24M
24.00 mi16:35:145:09:1912:5313:35
13:35
-0:05
40K
24.85 mi16:49:015:23:0613:0013:47
16:07
+2:32
25.2M
25.20 mi16:55:005:29:0513:045:59
17:21
+1:14
Finish
26.22 mi17:08:385:42:4313:0513:38
13:23
-3:58

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

11:53 /mi

Average Pace

13:05 /mi

Slowest Pace

17:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:52

36% of race

Time at Steady Pace

3:20:05

58% of race

Time at Slower Pace

19:46

6% of race

Average Pace: 13:04 /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 mi12:02:5036:5511:5336:55
11:53
#28203
10K
6.21 mi12:41:221:15:2712:0938:32
12:24
#28194
15K
9.32 mi13:20:071:54:1212:1538:45
12:28
#28125
20K
12.43 mi14:00:052:34:1012:2439:58
12:52
#28053
Half
13.11 mi14:08:452:42:5012:258:40
12:42
#28051
25K
15.53 mi14:40:333:14:3812:3231:48
13:07
#27966
30K
18.64 mi15:22:413:56:4612:4242:08
13:34
#27879
20M
20.00 mi15:40:594:15:0412:4518:18
13:28
#27825
21M
21.00 mi15:54:424:28:4712:4813:43
13:43
#27746
35K
21.75 mi16:04:324:38:3712:499:50
13:09
#27740
23M
23.00 mi16:21:394:55:4412:5117:07
13:40
#27725
24M
24.00 mi16:35:145:09:1912:5313:35
13:35
#27721
40K
24.85 mi16:49:015:23:0613:0013:47
16:07
#27771
25.2M
25.20 mi16:55:005:29:0513:045:59
17:21
#27784
Finish
26.22 mi17:08:385:42:4313:0513:38
13:23
#27796
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi28203120961209627917(Top 98%)11923(Top 98%)11923(Top 694%)
10K6.21 mi3.10 mi28194+912093+312093+328140(Top 99%)12065(Top 99%)12065(Top 702%)
15K9.32 mi3.11 mi28125+6912048+4512048+4527917(Top 98%)11923(Top 98%)11923(Top 694%)
20K12.43 mi3.11 mi28053+7212009+3912009+3927747(Top 98%)11843(Top 97%)11843(Top 689%)
Half13.11 mi0.68 mi28051+2120091200927857(Top 98%)11919(Top 97%)11919(Top 694%)
25K15.53 mi2.42 mi27966+8511955+5411955+5427372(Top 96%)11634(Top 95%)11634(Top 677%)
30K18.64 mi3.11 mi27879+8711911+4411911+4427185(Top 96%)11599(Top 95%)11599(Top 675%)
20M20.00 mi1.36 mi27825+5411888+2311888+2326861(Top 95%)11485(Top 94%)11485(Top 669%)
21M21.00 mi1.00 mi27746+7911853+3511853+3525901(Top 91%)10997(Top 90%)10997(Top 640%)
35K21.75 mi0.75 mi27740+611852+111852+127085(Top 95%)11636(Top 95%)11636(Top 677%)
23M23.00 mi1.25 mi27725+1511846+611846+627041(Top 95%)11630(Top 95%)11630(Top 677%)
24M24.00 mi1.00 mi27721+411851-511851-527387(Top 96%)11842(Top 97%)11842(Top 689%)
40K24.85 mi0.85 mi27771-5011887-3611887-3628126(Top 99%)12140(Top 99%)12140(Top 707%)
25.2M25.20 mi0.35 mi27784-1311896-911896-928122(Top 99%)12152(Top 99%)12152(Top 707%)
Finish26.22 mi1.02 mi27796-1211909-1311909-1327803(Top 98%)12005(Top 98%)12005(Top 699%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

27917

Females

11923

F40-44

11923

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

28140

Females

12065

F40-44

12065

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

27917

Females

11923

F40-44

11923

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

27747

Females

11843

F40-44

11843

20K→Half

12.4 - 13.1 mi

Top 98%
×2stories
+19ft-37ft

Overall

27857

Females

11919

F40-44

11919

Half→25K

13.1 - 15.5 mi

Top 96%
×4stories
+66ft-88ft

Overall

27372

Females

11634

F40-44

11634

25K→30K

15.5 - 18.6 mi

Top 96%
×9stories
+181ft-148ft

Overall

27185

Females

11599

F40-44

11599

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

26861

Females

11485

F40-44

11485

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

25901

Females

10997

F40-44

10997

21M→35K

21.0 - 21.8 mi

Top 95%
×7stories
+17ft-86ft

Overall

27085

Females

11636

F40-44

11636

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

27041

Females

11630

F40-44

11630

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

27387

Females

11842

F40-44

11842

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

28126

Females

12140

F40-44

12140

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28122

Females

12152

F40-44

12152

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

27803

Females

12005

F40-44

12005

Passing Analysis

Category:
Athletes Passed
629
Passed By
222
Net Change
+407
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28203
5K → 10K4233+9#28203#28194
10K → 15K767+69#28194#28125
15K → 20K8614+72#28125#28053
20K → Half119+2#28053#28051
Half → 25K9712+85#28051#27966
25K → 30K969+87#27966#27879
30K → 20M584+54#27879#27825
20M → 21M845+79#27825#27746
21M → 35K1812+6#27746#27740
35K → 23M3116+15#27740#27725
23M → 24M1915+4#27725#27721
24M → 40K252-50#27721#27771
40K → 25.2M013-13#27771#27784
25.2M → Finish921-12#27784#27796
TOTALS629222+407
📊

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