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BOSTON MARATHON 2025

Anna Brairton

Bib: 26455•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
32:22
Rank: #26581
Start → 5K
10:25/mi
32:22 split
10K· 6.21 mi
1:04:34
Rank: #26267 (+314)
5K → 10K
10:22/mi
32:12 split
15K· 9.32 mi
1:38:01
Rank: #26311 (-44)
10K → 15K
10:46/mi
33:27 split
20K· 12.43 mi
2:16:51
Rank: #26795 (-484)
15K → 20K
12:30/mi
38:50 split
Half· 13.11 mi
2:24:33
Rank: #26801 (-6)
20K → Half
11:17/mi
7:42 split
25K· 15.53 mi
2:55:28
Rank: #26907 (-106)
Half → 25K
12:45/mi
30:55 split
30K· 18.64 mi
3:37:36
Rank: #26986 (-79)
25K → 30K
13:34/mi
42:08 split
20M
3:53:39
Rank: #26875 (+111)
30K → 20M
11:49/mi
16:03 split
21M
4:07:10
Rank: #26832 (+43)
20M → 21M
13:31/mi
13:31 split
35K· 21.75 mi
4:15:12
Rank: #26756 (+76)
21M → 35K
10:44/mi
8:02 split
23M
4:30:09
Rank: #26655 (+101)
35K → 23M
11:56/mi
14:57 split
24M
4:41:08
Rank: #26584 (+71)
23M → 24M
10:59/mi
10:59 split
40K· 24.85 mi
4:50:23
Rank: #26502 (+82)
24M → 40K
10:49/mi
9:15 split
25.2M
4:54:22
Rank: #26448 (+54)
40K → 25.2M
11:33/mi
3:59 split
Finish· 26.22 mi
5:04:03
Rank: #26335 (+113)
25.2M → Finish
9:30/mi
9:41 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:24:33
Pace11:02 /mi
2nd Half
Distance13.11 mi
Time2:39:30
Pace12:10 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:5232:2210:2532:22
10:25
-
10K
6.21 mi12:20:041:04:3410:2332:12
10:22
-0:03
15K
9.32 mi12:53:311:38:0110:3133:27
10:46
+0:24
20K
12.43 mi13:32:212:16:5111:0138:50
12:30
+1:44
Half
13.11 mi13:40:032:24:3311:027:42
11:17
-1:13
25K
15.53 mi14:10:582:55:2811:1830:55
12:45
+1:28
30K
18.64 mi14:53:063:37:3611:4042:08
13:34
+0:49
20M
20.00 mi15:09:093:53:3911:4116:03
11:49
-1:45
21M
21.00 mi15:22:404:07:1011:4613:31
13:31
+1:42
35K
21.75 mi15:30:424:15:1211:448:02
10:44
-2:47
23M
23.00 mi15:45:394:30:0911:4514:57
11:56
+1:12
24M
24.00 mi15:56:384:41:0811:4310:59
10:59
-0:57
40K
24.85 mi16:05:534:50:2311:419:15
10:49
-0:10
25.2M
25.20 mi16:09:524:54:2211:413:59
11:33
+0:44
Finish
26.22 mi16:19:335:04:0311:369:41
9:30
-2:03

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

9:30 /mi

Average Pace

11:36 /mi

Slowest Pace

13:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:15

24% of race

Time at Steady Pace

1:29:27

29% of race

Time at Slower Pace

2:20:21

46% of race

Average Pace: 11:36 /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 mi11:47:5232:2210:2532:22
10:25
#26581
10K
6.21 mi12:20:041:04:3410:2332:12
10:22
#26267
15K
9.32 mi12:53:311:38:0110:3133:27
10:46
#26311
20K
12.43 mi13:32:212:16:5111:0138:50
12:30
#26795
Half
13.11 mi13:40:032:24:3311:027:42
11:17
#26801
25K
15.53 mi14:10:582:55:2811:1830:55
12:45
#26907
30K
18.64 mi14:53:063:37:3611:4042:08
13:34
#26986
20M
20.00 mi15:09:093:53:3911:4116:03
11:49
#26875
21M
21.00 mi15:22:404:07:1011:4613:31
13:31
#26832
35K
21.75 mi15:30:424:15:1211:448:02
10:44
#26756
23M
23.00 mi15:45:394:30:0911:4514:57
11:56
#26655
24M
24.00 mi15:56:384:41:0811:4310:59
10:59
#26584
40K
24.85 mi16:05:534:50:2311:419:15
10:49
#26502
25.2M
25.20 mi16:09:524:54:2211:413:59
11:33
#26448
Finish
26.22 mi16:19:335:04:0311:369:41
9:30
#26335
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26581110911109126347(Top 93%)10973(Top 90%)10973(Top 201%)
10K6.21 mi3.10 mi26267+31410917+17410917+17426030(Top 92%)10807(Top 88%)10807(Top 198%)
15K9.32 mi3.11 mi26311-4410955-3810955-3826347(Top 93%)10973(Top 90%)10973(Top 201%)
20K12.43 mi3.11 mi26795-48411240-28511240-28527514(Top 97%)11707(Top 96%)11707(Top 214%)
Half13.11 mi0.68 mi26801-611244-411244-426839(Top 94%)11322(Top 93%)11322(Top 207%)
25K15.53 mi2.42 mi26907-10611324-8011324-8027115(Top 95%)11497(Top 94%)11497(Top 210%)
30K18.64 mi3.11 mi26986-7911384-6011384-6027183(Top 96%)11597(Top 95%)11597(Top 212%)
20M20.00 mi1.36 mi26875+11111334+5011334+5024987(Top 88%)10467(Top 86%)10467(Top 191%)
21M21.00 mi1.00 mi26832+4311318+1611318+1625674(Top 90%)10892(Top 89%)10892(Top 199%)
35K21.75 mi0.75 mi26756+7611280+3811280+3823645(Top 83%)9881(Top 81%)9881(Top 181%)
23M23.00 mi1.25 mi26655+10111242+3811242+3825024(Top 88%)10619(Top 87%)10619(Top 194%)
24M24.00 mi1.00 mi26584+7111207+3511207+3523942(Top 84%)10088(Top 82%)10088(Top 184%)
40K24.85 mi0.85 mi26502+8211158+4911158+4922705(Top 80%)9564(Top 78%)9564(Top 175%)
25.2M25.20 mi0.35 mi26448+5411129+2911129+2922128(Top 78%)9238(Top 76%)9238(Top 169%)
Finish26.22 mi1.02 mi26335+11311082+4711082+4721164(Top 75%)8750(Top 72%)8750(Top 160%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

26347

Females

10973

F18-39

10973

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

26030

Females

10807

F18-39

10807

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

26347

Females

10973

F18-39

10973

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

27514

Females

11707

F18-39

11707

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

26839

Females

11322

F18-39

11322

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

27115

Females

11497

F18-39

11497

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27183

Females

11597

F18-39

11597

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

24987

Females

10467

F18-39

10467

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25674

Females

10892

F18-39

10892

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23645

Females

9881

F18-39

9881

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

25024

Females

10619

F18-39

10619

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23942

Females

10088

F18-39

10088

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22705

Females

9564

F18-39

9564

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22128

Females

9238

F18-39

9238

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21164

Females

8750

F18-39

8750

Passing Analysis

Category:
Athletes Passed
1290
Passed By
1044
Net Change
+246
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26581
5K → 10K37157+314#26581#26267
10K → 15K115159-44#26267#26311
15K → 20K18502-484#26311#26795
20K → Half2026-6#26795#26801
Half → 25K34140-106#26801#26907
25K → 30K54133-79#26907#26986
30K → 20M1110+111#26986#26875
20M → 21M5714+43#26875#26832
21M → 35K760+76#26832#26756
35K → 23M1087+101#26756#26655
23M → 24M743+71#26655#26584
24M → 40K842+82#26584#26502
40K → 25.2M551+54#26502#26448
25.2M → Finish1130+113#26448#26335
TOTALS12901044+246
📊

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