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BOSTON MARATHON 2025

Amber Alexander

Bib: 22552•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:28
Rank: #18089
Start → 5K
25:28 | 8:12/mi
10K· 6.21 mi
51:07
Rank: #18156 (-67)
5K → 10K
25:39 | 8:15/mi
15K· 9.32 mi
1:17:00
Rank: #18162 (-6)
10K → 15K
25:53 | 8:20/mi
20K· 12.43 mi
1:43:11
Rank: #18016 (+146)
15K → 20K
26:11 | 8:26/mi
Half· 13.11 mi
1:48:55
Rank: #18032 (-16)
20K → Half
5:44 | 8:24/mi
25K· 15.53 mi
2:09:59
Rank: #18045 (-13)
Half → 25K
21:04 | 8:41/mi
30K· 18.64 mi
2:38:37
Rank: #18188 (-143)
25K → 30K
28:38 | 9:13/mi
20M
2:51:30
Rank: #18266 (-78)
30K → 20M
12:53 | 9:29/mi
21M
3:01:54
Rank: #18374 (-108)
20M → 21M
10:24 | 10:24/mi
35K· 21.75 mi
3:08:25
Rank: #18311 (+63)
21M → 35K
6:31 | 8:43/mi
23M
3:20:07
Rank: #18292 (+19)
35K → 23M
11:42 | 9:21/mi
24M
3:29:13
Rank: #18252 (+40)
23M → 24M
9:06 | 9:06/mi
40K· 24.85 mi
3:37:34
Rank: #18342 (-90)
24M → 40K
8:21 | 9:46/mi
25.2M
3:41:29
Rank: #18420 (-78)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
3:51:34
Rank: #18658 (-238)
25.2M → Finish
10:05 | 9:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:55
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:02:39
Pace9:21 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:2525:288:1225:28
8:12
-
10K
6.21 mi11:49:0451:078:1425:39
8:15
+0:03
15K
9.32 mi12:14:571:17:008:1625:53
8:20
+0:05
20K
12.43 mi12:41:081:43:118:1826:11
8:26
+0:06
Half
13.11 mi12:46:521:48:558:185:44
8:24
-0:02
25K
15.53 mi13:07:562:09:598:2221:04
8:41
+0:17
30K
18.64 mi13:36:342:38:378:3128:38
9:13
+0:32
20M
20.00 mi13:49:272:51:308:3412:53
9:29
+0:16
21M
21.00 mi13:59:513:01:548:4010:24
10:24
+0:55
35K
21.75 mi14:06:223:08:258:406:31
8:43
-1:41
23M
23.00 mi14:18:043:20:078:4211:42
9:21
+0:38
24M
24.00 mi14:27:103:29:138:439:06
9:06
-0:15
40K
24.85 mi14:35:313:37:348:458:21
9:46
+0:40
25.2M
25.20 mi14:39:263:41:298:473:55
11:21
+1:35
Finish
26.22 mi14:49:313:51:348:5010:05
9:54
-1:27

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

8:12 /mi

Average Pace

8:50 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:55

47% of race

Time at Steady Pace

1:29:54

39% of race

Time at Slower Pace

32:45

14% of race

Average Pace: 8:50 /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 mi11:23:2525:288:1225:28
8:12
#18089
10K
6.21 mi11:49:0451:078:1425:39
8:15
#18156
15K
9.32 mi12:14:571:17:008:1625:53
8:20
#18162
20K
12.43 mi12:41:081:43:118:1826:11
8:26
#18016
Half
13.11 mi12:46:521:48:558:185:44
8:24
#18032
25K
15.53 mi13:07:562:09:598:2221:04
8:41
#18045
30K
18.64 mi13:36:342:38:378:3128:38
9:13
#18188
20M
20.00 mi13:49:272:51:308:3412:53
9:29
#18266
21M
21.00 mi13:59:513:01:548:4010:24
10:24
#18374
35K
21.75 mi14:06:223:08:258:406:31
8:43
#18311
23M
23.00 mi14:18:043:20:078:4211:42
9:21
#18292
24M
24.00 mi14:27:103:29:138:439:06
9:06
#18252
40K
24.85 mi14:35:313:37:348:458:21
9:46
#18342
25.2M
25.20 mi14:39:263:41:298:473:55
11:21
#18420
Finish
26.22 mi14:49:313:51:348:5010:05
9:54
#18658
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi180896399639918277(Top 64%)6484(Top 53%)6484(Top 358%)
10K6.21 mi3.10 mi18156-676425-266425-2618281(Top 64%)6477(Top 53%)6477(Top 357%)
15K9.32 mi3.11 mi18162-66426-16426-118277(Top 64%)6484(Top 53%)6484(Top 358%)
20K12.43 mi3.11 mi18016+1466343+836343+8317733(Top 62%)6187(Top 51%)6187(Top 341%)
Half13.11 mi0.68 mi18032-166358-156358-1518656(Top 66%)6715(Top 55%)6715(Top 370%)
25K15.53 mi2.42 mi18045-136386-286386-2818339(Top 65%)6620(Top 54%)6620(Top 365%)
30K18.64 mi3.11 mi18188-1436499-1136499-11318721(Top 66%)6964(Top 57%)6964(Top 384%)
20M20.00 mi1.36 mi18266-786566-676566-6719093(Top 67%)7309(Top 60%)7309(Top 403%)
21M21.00 mi1.00 mi18374-1086652-866652-8619712(Top 69%)7746(Top 63%)7746(Top 427%)
35K21.75 mi0.75 mi18311+636632+206632+2016804(Top 59%)6228(Top 51%)6228(Top 344%)
23M23.00 mi1.25 mi18292+196646-146646-1418008(Top 63%)6988(Top 57%)6988(Top 385%)
24M24.00 mi1.00 mi18252+406656-106656-1017907(Top 63%)6984(Top 57%)6984(Top 385%)
40K24.85 mi0.85 mi18342-906736-806736-8019705(Top 69%)7991(Top 65%)7991(Top 441%)
25.2M25.20 mi0.35 mi18420-786787-516787-5121686(Top 76%)8992(Top 74%)8992(Top 496%)
Finish26.22 mi1.02 mi18658-2386934-1476934-14722609(Top 80%)9466(Top 77%)9466(Top 522%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

18277

Females

6484

F45-49

6484

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18281

Females

6477

F45-49

6477

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

18277

Females

6484

F45-49

6484

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17733

Females

6187

F45-49

6187

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18656

Females

6715

F45-49

6715

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18339

Females

6620

F45-49

6620

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18721

Females

6964

F45-49

6964

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

19093

Females

7309

F45-49

7309

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19712

Females

7746

F45-49

7746

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16804

Females

6228

F45-49

6228

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

18008

Females

6988

F45-49

6988

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

17907

Females

6984

F45-49

6984

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19705

Females

7991

F45-49

7991

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21686

Females

8992

F45-49

8992

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

22609

Females

9466

F45-49

9466

Passing Analysis

Category:
Athletes Passed
1613
Passed By
2182
Net Change
-569
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18089
5K → 10K254321-67#18089#18156
10K → 15K180186-6#18156#18162
15K → 20K265119+146#18162#18016
20K → Half3349-16#18016#18032
Half → 25K165178-13#18032#18045
25K → 30K195338-143#18045#18188
30K → 20M95173-78#18188#18266
20M → 21M65173-108#18266#18374
21M → 35K9128+63#18374#18311
35K → 23M10990+19#18311#18292
23M → 24M9555+40#18292#18252
24M → 40K42132-90#18252#18342
40K → 25.2M886-78#18342#18420
25.2M → Finish16254-238#18420#18658
TOTALS16132182-569
📊

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