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BOSTON MARATHON 2025

Alexandra Tan

Bib: 32161•F

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:15
Rank: #19604
Start → 5K
26:15 | 8:27/mi
10K· 6.21 mi
51:54
Rank: #18953 (+651)
5K → 10K
25:39 | 8:15/mi
15K· 9.32 mi
1:17:45
Rank: #18674 (+279)
10K → 15K
25:51 | 8:19/mi
20K· 12.43 mi
1:44:06
Rank: #18494 (+180)
15K → 20K
26:21 | 8:29/mi
Half· 13.11 mi
1:49:59
Rank: #18579 (-85)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:12:57
Rank: #19255 (-676)
Half → 25K
22:58 | 9:28/mi
30K· 18.64 mi
2:43:58
Rank: #19842 (-587)
25K → 30K
31:01 | 9:59/mi
20M
2:57:36
Rank: #19991 (-149)
30K → 20M
13:38 | 10:02/mi
21M
3:08:39
Rank: #20109 (-118)
20M → 21M
11:03 | 11:03/mi
35K· 21.75 mi
3:15:21
Rank: #20041 (+68)
21M → 35K
6:42 | 8:57/mi
23M
3:27:42
Rank: #20072 (-31)
35K → 23M
12:21 | 9:52/mi
24M
3:37:38
Rank: #20138 (-66)
23M → 24M
9:56 | 9:56/mi
40K· 24.85 mi
3:45:42
Rank: #20071 (+67)
24M → 40K
8:04 | 9:26/mi
25.2M
3:49:43
Rank: #20143 (-72)
40K → 25.2M
4:01 | 11:39/mi
Finish· 26.22 mi
3:58:40
Rank: #20094 (+49)
25.2M → Finish
8:57 | 8:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:59
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:08:41
Pace9:49 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5326:158:2726:15
8:27
-
10K
6.21 mi12:16:3251:548:2125:39
8:15
-0:12
15K
9.32 mi12:42:231:17:458:2125:51
8:19
+0:04
20K
12.43 mi13:08:441:44:068:2326:21
8:29
+0:10
Half
13.11 mi13:14:371:49:598:235:53
8:37
+0:08
25K
15.53 mi13:37:352:12:578:3422:58
9:28
+0:51
30K
18.64 mi14:08:362:43:588:4831:01
9:59
+0:31
20M
20.00 mi14:22:142:57:368:5313:38
10:02
+0:03
21M
21.00 mi14:33:173:08:398:5911:03
11:03
+1:01
35K
21.75 mi14:39:593:15:218:596:42
8:57
-2:06
23M
23.00 mi14:52:203:27:429:0212:21
9:52
+0:55
24M
24.00 mi15:02:163:37:389:049:56
9:56
+0:04
40K
24.85 mi15:10:203:45:429:058:04
9:26
-0:30
25.2M
25.20 mi15:14:213:49:439:074:01
11:39
+2:13
Finish
26.22 mi15:23:183:58:409:078:57
8:47
-2:52

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

8:15 /mi

Average Pace

9:07 /mi

Slowest Pace

11:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:56

50% of race

Time at Steady Pace

50:05

21% of race

Time at Slower Pace

1:09:39

29% of race

Average Pace: 9:06 /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 mi11:50:5326:158:2726:15
8:27
#19604
10K
6.21 mi12:16:3251:548:2125:39
8:15
#18953
15K
9.32 mi12:42:231:17:458:2125:51
8:19
#18674
20K
12.43 mi13:08:441:44:068:2326:21
8:29
#18494
Half
13.11 mi13:14:371:49:598:235:53
8:37
#18579
25K
15.53 mi13:37:352:12:578:3422:58
9:28
#19255
30K
18.64 mi14:08:362:43:588:4831:01
9:59
#19842
20M
20.00 mi14:22:142:57:368:5313:38
10:02
#19991
21M
21.00 mi14:33:173:08:398:5911:03
11:03
#20109
35K
21.75 mi14:39:593:15:218:596:42
8:57
#20041
23M
23.00 mi14:52:203:27:429:0212:21
9:52
#20072
24M
24.00 mi15:02:163:37:389:049:56
9:56
#20138
40K
24.85 mi15:10:203:45:429:058:04
9:26
#20071
25.2M
25.20 mi15:14:213:49:439:074:01
11:39
#20143
Finish
26.22 mi15:23:183:58:409:078:57
8:47
#20094
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi196047262726218204(Top 64%)6444(Top 53%)6444(Top 118%)
10K6.21 mi3.10 mi18953+6516880+3826880+38218283(Top 64%)6479(Top 53%)6479(Top 118%)
15K9.32 mi3.11 mi18674+2796717+1636717+16318204(Top 64%)6444(Top 53%)6444(Top 118%)
20K12.43 mi3.11 mi18494+1806617+1006617+10018124(Top 64%)6414(Top 52%)6414(Top 117%)
Half13.11 mi0.68 mi18579-856666-496666-4919986(Top 70%)7474(Top 61%)7474(Top 137%)
25K15.53 mi2.42 mi19255-6767059-3937059-39321766(Top 77%)8527(Top 70%)8527(Top 156%)
30K18.64 mi3.11 mi19842-5877427-3687427-36821559(Top 76%)8528(Top 70%)8528(Top 156%)
20M20.00 mi1.36 mi19991-1497539-1127539-11221072(Top 74%)8395(Top 69%)8395(Top 154%)
21M21.00 mi1.00 mi20109-1187644-1057644-10521542(Top 76%)8732(Top 71%)8732(Top 160%)
35K21.75 mi0.75 mi20041+687617+277617+2718063(Top 64%)6945(Top 57%)6945(Top 127%)
23M23.00 mi1.25 mi20072-317662-457662-4520022(Top 70%)8063(Top 66%)8063(Top 147%)
24M24.00 mi1.00 mi20138-667714-527714-5221178(Top 75%)8687(Top 71%)8687(Top 159%)
40K24.85 mi0.85 mi20071+677699+157699+1518461(Top 65%)7369(Top 60%)7369(Top 135%)
25.2M25.20 mi0.35 mi20143-727747-487747-4822450(Top 79%)9373(Top 77%)9373(Top 171%)
Finish26.22 mi1.02 mi20094+497730+177730+1717986(Top 63%)7080(Top 58%)7080(Top 129%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

18204

Females

6444

F18-39

6444

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18283

Females

6479

F18-39

6479

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

18204

Females

6444

F18-39

6444

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18124

Females

6414

F18-39

6414

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

19986

Females

7474

F18-39

7474

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21766

Females

8527

F18-39

8527

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21559

Females

8528

F18-39

8528

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

21072

Females

8395

F18-39

8395

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21542

Females

8732

F18-39

8732

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

18063

Females

6945

F18-39

6945

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

20022

Females

8063

F18-39

8063

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

21178

Females

8687

F18-39

8687

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18461

Females

7369

F18-39

7369

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

22450

Females

9373

F18-39

9373

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

17986

Females

7080

F18-39

7080

Passing Analysis

Category:
Athletes Passed
2028
Passed By
2518
Net Change
-490
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19604
5K → 10K72271+651#19604#18953
10K → 15K35273+279#18953#18674
15K → 20K288108+180#18674#18494
20K → Half1398-85#18494#18579
Half → 25K45721-676#18579#19255
25K → 30K85672-587#19255#19842
30K → 20M65214-149#19842#19991
20M → 21M61179-118#19991#20109
21M → 35K9022+68#20109#20041
35K → 23M74105-31#20041#20072
23M → 24M40106-66#20072#20138
24M → 40K9225+67#20138#20071
40K → 25.2M1385-72#20071#20143
25.2M → Finish8839+49#20143#20094
TOTALS20282518-490
📊

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