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BOSTON MARATHON 2025

Alexandra Burr

Bib: 28015•F

MA

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
30:00
Rank: #24718
Start → 5K
30:00 | 9:39/mi
10K· 6.21 mi
59:36
Rank: #24436 (+282)
5K → 10K
29:36 | 9:32/mi
15K· 9.32 mi
1:29:30
Rank: #24319 (+117)
10K → 15K
29:54 | 9:37/mi
20K· 12.43 mi
2:00:35
Rank: #24312 (+7)
15K → 20K
31:05 | 10:00/mi
Half· 13.11 mi
2:07:15
Rank: #24310 (+2)
20K → Half
6:40 | 9:46/mi
25K· 15.53 mi
2:32:24
Rank: #24276 (+34)
Half → 25K
25:09 | 10:22/mi
30K· 18.64 mi
3:05:16
Rank: #24067 (+209)
25K → 30K
32:52 | 10:35/mi
20M
3:19:39
Rank: #23967 (+100)
30K → 20M
14:23 | 10:35/mi
21M
3:31:06
Rank: #23866 (+101)
20M → 21M
11:27 | 11:27/mi
35K· 21.75 mi
3:38:59
Rank: #23827 (+39)
21M → 35K
7:53 | 10:32/mi
23M
3:52:51
Rank: #23812 (+15)
35K → 23M
13:52 | 11:05/mi
24M
4:03:49
Rank: #23811 (+1)
23M → 24M
10:58 | 10:58/mi
40K· 24.85 mi
4:13:12
Rank: #23780 (+31)
24M → 40K
9:23 | 10:58/mi
25.2M
4:17:19
Rank: #23766 (+14)
40K → 25.2M
4:07 | 11:56/mi
Finish· 26.22 mi
4:27:31
Rank: #23768 (-2)
25.2M → Finish
10:12 | 10:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:15
Pace9:42 /mi
2nd Half
Distance13.11 mi
Time2:20:16
Pace10:42 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0630:009:3930:00
9:39
-
10K
6.21 mi12:16:4259:369:3629:36
9:32
-0:07
15K
9.32 mi12:46:361:29:309:3629:54
9:37
+0:05
20K
12.43 mi13:17:412:00:359:4231:05
10:00
+0:23
Half
13.11 mi13:24:212:07:159:426:40
9:46
-0:14
25K
15.53 mi13:49:302:32:249:4925:09
10:22
+0:36
30K
18.64 mi14:22:223:05:169:5632:52
10:35
+0:13
20M
20.00 mi14:36:453:19:399:5914:23
10:35
0:00
21M
21.00 mi14:48:123:31:0610:0311:27
11:27
+0:52
35K
21.75 mi14:56:053:38:5910:047:53
10:32
-0:55
23M
23.00 mi15:09:573:52:5110:0713:52
11:05
+0:33
24M
24.00 mi15:20:554:03:4910:1010:58
10:58
-0:07
40K
24.85 mi15:30:184:13:1210:119:23
10:58
0:00
25.2M
25.20 mi15:34:254:17:1910:134:07
11:56
+0:58
Finish
26.22 mi15:44:374:27:3110:1310:12
10:01
-1:55

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

9:32 /mi

Average Pace

10:13 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:27

51% of race

Time at Steady Pace

1:20:17

30% of race

Time at Slower Pace

49:47

19% of race

Average Pace: 10:12 /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 mi11:47:0630:009:3930:00
9:39
#24718
10K
6.21 mi12:16:4259:369:3629:36
9:32
#24436
15K
9.32 mi12:46:361:29:309:3629:54
9:37
#24319
20K
12.43 mi13:17:412:00:359:4231:05
10:00
#24312
Half
13.11 mi13:24:212:07:159:426:40
9:46
#24310
25K
15.53 mi13:49:302:32:249:4925:09
10:22
#24276
30K
18.64 mi14:22:223:05:169:5632:52
10:35
#24067
20M
20.00 mi14:36:453:19:399:5914:23
10:35
#23967
21M
21.00 mi14:48:123:31:0610:0311:27
11:27
#23866
35K
21.75 mi14:56:053:38:5910:047:53
10:32
#23827
23M
23.00 mi15:09:573:52:5110:0713:52
11:05
#23812
24M
24.00 mi15:20:554:03:4910:1010:58
10:58
#23811
40K
24.85 mi15:30:184:13:1210:119:23
10:58
#23780
25.2M
25.20 mi15:34:254:17:1910:134:07
11:56
#23766
Finish
26.22 mi15:44:374:27:3110:1310:12
10:01
#23768
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24718100701007024089(Top 85%)9721(Top 79%)9721(Top 178%)
10K6.21 mi3.10 mi24436+2829914+1569914+15624182(Top 85%)9792(Top 80%)9792(Top 179%)
15K9.32 mi3.11 mi24319+1179853+619853+6124089(Top 85%)9721(Top 79%)9721(Top 178%)
20K12.43 mi3.11 mi24312+79869-169869-1624230(Top 85%)9845(Top 81%)9845(Top 180%)
Half13.11 mi0.68 mi24310+29874-59874-524329(Top 86%)9891(Top 81%)9891(Top 181%)
25K15.53 mi2.42 mi24276+349867+79867+724123(Top 85%)9809(Top 80%)9809(Top 179%)
30K18.64 mi3.11 mi24067+2099766+1019766+10123127(Top 81%)9395(Top 77%)9395(Top 172%)
20M20.00 mi1.36 mi23967+1009731+359731+3522667(Top 80%)9238(Top 76%)9238(Top 169%)
21M21.00 mi1.00 mi23866+1019691+409691+4022543(Top 79%)9269(Top 76%)9269(Top 169%)
35K21.75 mi0.75 mi23827+399685+69685+623268(Top 82%)9691(Top 79%)9691(Top 177%)
23M23.00 mi1.25 mi23812+159699-149699-1423412(Top 82%)9811(Top 80%)9811(Top 179%)
24M24.00 mi1.00 mi23811+19711-129711-1223934(Top 84%)10081(Top 82%)10081(Top 184%)
40K24.85 mi0.85 mi23780+319709+29709+223107(Top 81%)9761(Top 80%)9761(Top 178%)
25.2M25.20 mi0.35 mi23766+149704+59704+523127(Top 81%)9725(Top 80%)9725(Top 178%)
Finish26.22 mi1.02 mi23768-29713-99713-922981(Top 81%)9660(Top 79%)9660(Top 177%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24089

Females

9721

F18-39

9721

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24182

Females

9792

F18-39

9792

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24089

Females

9721

F18-39

9721

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24230

Females

9845

F18-39

9845

20K→Half

12.4 - 13.1 mi

Top 86%
×2stories
+19ft-37ft

Overall

24329

Females

9891

F18-39

9891

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

24123

Females

9809

F18-39

9809

25K→30K

15.5 - 18.6 mi

Top 81%
×9stories
+181ft-148ft

Overall

23127

Females

9395

F18-39

9395

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

22667

Females

9238

F18-39

9238

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

22543

Females

9269

F18-39

9269

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23268

Females

9691

F18-39

9691

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

23412

Females

9811

F18-39

9811

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

23934

Females

10081

F18-39

10081

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23107

Females

9761

F18-39

9761

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23127

Females

9725

F18-39

9725

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

22981

Females

9660

F18-39

9660

Passing Analysis

Category:
Athletes Passed
1683
Passed By
733
Net Change
+950
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24718
5K → 10K36381+282#24718#24436
10K → 15K20487+117#24436#24319
15K → 20K144137+7#24319#24312
20K → Half2220+2#24312#24310
Half → 25K13399+34#24310#24276
25K → 30K27465+209#24276#24067
30K → 20M12929+100#24067#23967
20M → 21M11817+101#23967#23866
21M → 35K6425+39#23866#23827
35K → 23M7560+15#23827#23812
23M → 24M4039+1#23812#23811
24M → 40K5928+31#23811#23780
40K → 25.2M217+14#23780#23766
25.2M → Finish3739-2#23766#23768
TOTALS1683733+950
📊

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