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BOSTON MARATHON 2025

Mairi Crawford

Bib: 22914•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
8:04/mi
25:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
50:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:16/mi
1:16:33
↑ 67↓ 78
20K· 12.43 mi
8:47/mi
1:43:50
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:49:49
↑ 19↓ 370.5%
25K· 15.53 mi
9:02/mi
2:11:42
↑ 66↓ 880.2%
30K· 18.64 mi
9:39/mi
2:41:40
↑ 181↓ 1480.2%
20M
9:44/mi
2:54:54
↑ 64↓ 500.2%
21M
10:32/mi
3:05:26
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:12:20
↑ 17↓ 861.7%
23M
9:43/mi
3:24:30
↑ 23↓ 630.6%
24M
9:53/mi
3:34:23
↓ 821.3%
40K· 24.85 mi
9:32/mi
3:42:32
↓ 200.3%
25.2M
10:58/mi
3:46:19
↑ 13↓ 160.2%
Finish· 26.22 mi
9:03/mi
3:55:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:49
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:05:43
Pace9:35 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4925:048:0425:04
8:04
-
10K
6.21 mi11:47:3750:528:1125:48
8:18
+0:14
15K
9.32 mi12:13:181:16:338:1325:41
8:16
-0:02
20K
12.43 mi12:40:351:43:508:2127:17
8:47
+0:31
Half
13.11 mi12:46:341:49:498:235:59
8:46
-0:01
25K
15.53 mi13:08:272:11:428:2921:53
9:02
+0:16
30K
18.64 mi13:38:252:41:408:4029:58
9:39
+0:37
20M
20.00 mi13:51:392:54:548:4513:14
9:44
+0:05
21M
21.00 mi14:02:113:05:268:5010:32
10:32
+0:48
35K
21.75 mi14:09:053:12:208:516:54
9:13
-1:19
23M
23.00 mi14:21:153:24:308:5312:10
9:43
+0:30
24M
24.00 mi14:31:083:34:238:569:53
9:53
+0:10
40K
24.85 mi14:39:173:42:328:578:09
9:32
-0:21
25.2M
25.20 mi14:43:043:46:198:593:47
10:58
+1:26
Finish
26.22 mi14:52:173:55:328:599:13
9:03
-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

8:04 /mi

Average Pace

8:59 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:49

47% of race

Time at Steady Pace

46:09

20% of race

Time at Slower Pace

1:19:34

34% of race

Average Pace: 8:59 /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 mi11:21:4925:048:0425:04
8:04
#17155
10K
6.21 mi11:47:3750:528:1125:48
8:18
#17890
15K
9.32 mi12:13:181:16:338:1325:41
8:16
#17842
20K
12.43 mi12:40:351:43:508:2127:17
8:47
#18350
Half
13.11 mi12:46:341:49:498:235:59
8:46
#18495
25K
15.53 mi13:08:272:11:428:2921:53
9:02
#18785
30K
18.64 mi13:38:252:41:408:4029:58
9:39
#19188
20M
20.00 mi13:51:392:54:548:4513:14
9:44
#19259
21M
21.00 mi14:02:113:05:268:5010:32
10:32
#19335
35K
21.75 mi14:09:053:12:208:516:54
9:13
#19336
23M
23.00 mi14:21:153:24:308:5312:10
9:43
#19363
24M
24.00 mi14:31:083:34:238:569:53
9:53
#19468
40K
24.85 mi14:39:173:42:328:578:09
9:32
#19437
25.2M
25.20 mi14:43:043:46:198:593:47
10:58
#19459
Finish
26.22 mi14:52:173:55:328:599:13
9:03
#19455
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi171555832583217840(Top 63%)6229(Top 51%)6229(Top 478%)
10K6.21 mi3.10 mi17890-7356263-4316263-43118594(Top 65%)6651(Top 54%)6651(Top 510%)
15K9.32 mi3.11 mi17842+486235+286235+2817840(Top 63%)6229(Top 51%)6229(Top 478%)
20K12.43 mi3.11 mi18350-5086540-3056540-30519854(Top 70%)7406(Top 61%)7406(Top 568%)
Half13.11 mi0.68 mi18495-1456613-736613-7320782(Top 73%)7908(Top 65%)7908(Top 607%)
25K15.53 mi2.42 mi18785-2906790-1776790-17720028(Top 71%)7549(Top 62%)7549(Top 579%)
30K18.64 mi3.11 mi19188-4037067-2777067-27720531(Top 72%)7950(Top 65%)7950(Top 610%)
20M20.00 mi1.36 mi19259-717131-647131-6420075(Top 71%)7832(Top 64%)7832(Top 601%)
21M21.00 mi1.00 mi19335-767198-677198-6720118(Top 71%)7973(Top 65%)7973(Top 612%)
35K21.75 mi0.75 mi19336-17209-117209-1119289(Top 68%)7598(Top 62%)7598(Top 583%)
23M23.00 mi1.25 mi19363-277261-527261-5219517(Top 69%)7795(Top 64%)7795(Top 598%)
24M24.00 mi1.00 mi19468-1057342-817342-8121008(Top 74%)8601(Top 70%)8601(Top 660%)
40K24.85 mi0.85 mi19437+317344-27344-218859(Top 66%)7559(Top 62%)7559(Top 580%)
25.2M25.20 mi0.35 mi19459-227363-197363-1920556(Top 72%)8434(Top 69%)8434(Top 647%)
Finish26.22 mi1.02 mi19455+47384-217384-2119277(Top 68%)7754(Top 63%)7754(Top 595%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17840

Females

6229

F50-54

6229

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18594

Females

6651

F50-54

6651

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17840

Females

6229

F50-54

6229

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19854

Females

7406

F50-54

7406

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20782

Females

7908

F50-54

7908

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20028

Females

7549

F50-54

7549

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

20531

Females

7950

F50-54

7950

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20075

Females

7832

F50-54

7832

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

20118

Females

7973

F50-54

7973

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19289

Females

7598

F50-54

7598

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

19517

Females

7795

F50-54

7795

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

21008

Females

8601

F50-54

8601

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18859

Females

7559

F50-54

7559

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20556

Females

8434

F50-54

8434

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19277

Females

7754

F50-54

7754

Passing Analysis

Category:
Athletes Passed
1083
Passed By
3383
Net Change
-2300
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17155
5K → 10K85820-735#17155#17890
10K → 15K215167+48#17890#17842
15K → 20K69577-508#17842#18350
20K → Half7152-145#18350#18495
Half → 25K93383-290#18495#18785
25K → 30K123526-403#18785#19188
30K → 20M82153-71#19188#19259
20M → 21M74150-76#19259#19335
21M → 35K4849-1#19335#19336
35K → 23M88115-27#19336#19363
23M → 24M42147-105#19363#19468
24M → 40K7443+31#19468#19437
40K → 25.2M2042-22#19437#19459
25.2M → Finish6359+4#19459#19455
TOTALS10833383-2300
📊

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