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BOSTON MARATHON 2025

Brittney Anderson

Bib: 28151•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
33:41
Rank: #27346
Start → 5K
33:41 | 10:50/mi
10K· 6.21 mi
1:11:39
Rank: #27847 (-501)
5K → 10K
37:58 | 12:13/mi
15K· 9.32 mi
1:51:02
Rank: #27960 (-113)
10K → 15K
39:23 | 12:41/mi
20K· 12.43 mi
2:33:48
Rank: #28038 (-78)
15K → 20K
42:46 | 13:46/mi
Half· 13.11 mi
2:43:02
Rank: #28060 (-22)
20K → Half
9:14 | 13:32/mi
25K· 15.53 mi
3:16:34
Rank: #28046 (+14)
Half → 25K
33:32 | 13:50/mi
30K· 18.64 mi
4:02:48
Rank: #28079 (-33)
25K → 30K
46:14 | 14:53/mi
20M
4:23:11
Rank: #28094 (-15)
30K → 20M
20:23 | 15:00/mi
21M
4:38:33
Rank: #28077 (+17)
20M → 21M
15:22 | 15:22/mi
35K· 21.75 mi
4:49:05
Rank: #28080 (-3)
21M → 35K
10:32 | 14:05/mi
23M
5:06:59
Rank: #28073 (+7)
35K → 23M
17:54 | 14:18/mi
24M
5:20:54
Rank: #28069 (+4)
23M → 24M
13:55 | 13:55/mi
40K· 24.85 mi
5:32:37
Rank: #28050 (+19)
24M → 40K
11:43 | 13:42/mi
25.2M
5:37:26
Rank: #28030 (+20)
40K → 25.2M
4:49 | 13:58/mi
Finish· 26.22 mi
5:49:37
Rank: #27993 (+37)
25.2M → Finish
12:11 | 11:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:43:02
Pace12:26 /mi
2nd Half
Distance13.11 mi
Time3:06:35
Pace14:14 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:0433:4110:5033:41
10:50
-
10K
6.21 mi12:29:021:11:3911:3237:58
12:13
+1:23
15K
9.32 mi13:08:251:51:0211:5539:23
12:41
+0:28
20K
12.43 mi13:51:112:33:4812:2342:46
13:46
+1:05
Half
13.11 mi14:00:252:43:0212:269:14
13:32
-0:14
25K
15.53 mi14:33:573:16:3412:3933:32
13:50
+0:18
30K
18.64 mi15:20:114:02:4813:0146:14
14:53
+1:03
20M
20.00 mi15:40:344:23:1113:1020:23
15:00
+0:07
21M
21.00 mi15:55:564:38:3313:1615:22
15:22
+0:22
35K
21.75 mi16:06:284:49:0513:1810:32
14:05
-1:17
23M
23.00 mi16:24:225:06:5913:2117:54
14:18
+0:13
24M
24.00 mi16:38:175:20:5413:2213:55
13:55
-0:23
40K
24.85 mi16:50:005:32:3713:2311:43
13:42
-0:13
25.2M
25.20 mi16:54:495:37:2613:234:49
13:58
+0:16
Finish
26.22 mi17:07:005:49:3713:2112:11
11:57
-2:01

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

10:50 /mi

Average Pace

13:21 /mi

Slowest Pace

15:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:13

35% of race

Time at Steady Pace

2:24:25

41% of race

Time at Slower Pace

1:21:59

23% of race

Average Pace: 13:20 /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 mi11:51:0433:4110:5033:41
10:50
#27346
10K
6.21 mi12:29:021:11:3911:3237:58
12:13
#27847
15K
9.32 mi13:08:251:51:0211:5539:23
12:41
#27960
20K
12.43 mi13:51:112:33:4812:2342:46
13:46
#28038
Half
13.11 mi14:00:252:43:0212:269:14
13:32
#28060
25K
15.53 mi14:33:573:16:3412:3933:32
13:50
#28046
30K
18.64 mi15:20:114:02:4813:0146:14
14:53
#28079
20M
20.00 mi15:40:344:23:1113:1020:23
15:00
#28094
21M
21.00 mi15:55:564:38:3313:1615:22
15:22
#28077
35K
21.75 mi16:06:284:49:0513:1810:32
14:05
#28080
23M
23.00 mi16:24:225:06:5913:2117:54
14:18
#28073
24M
24.00 mi16:38:175:20:5413:2213:55
13:55
#28069
40K
24.85 mi16:50:005:32:3713:2311:43
13:42
#28050
25.2M
25.20 mi16:54:495:37:2613:234:49
13:58
#28030
Finish
26.22 mi17:07:005:49:3713:2112:11
11:57
#27993
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27346115371153728029(Top 99%)11993(Top 98%)11993(Top 219%)
10K6.21 mi3.10 mi27847-50111858-32111858-32128053(Top 99%)12010(Top 98%)12010(Top 220%)
15K9.32 mi3.11 mi27960-11311945-8711945-8728029(Top 99%)11993(Top 98%)11993(Top 219%)
20K12.43 mi3.11 mi28038-7811999-5411999-5428169(Top 99%)12101(Top 99%)12101(Top 221%)
Half13.11 mi0.68 mi28060-2212014-1512014-1528176(Top 99%)12114(Top 99%)12114(Top 222%)
25K15.53 mi2.42 mi28046+1412005+912005+927807(Top 98%)11892(Top 97%)11892(Top 217%)
30K18.64 mi3.11 mi28079-3312032-2712032-2727976(Top 98%)12037(Top 98%)12037(Top 220%)
20M20.00 mi1.36 mi28094-1512048-1612048-1627866(Top 98%)11991(Top 98%)11991(Top 219%)
21M21.00 mi1.00 mi28077+1712040+812040+827423(Top 97%)11785(Top 96%)11785(Top 215%)
35K21.75 mi0.75 mi28080-312044-412044-427730(Top 98%)11973(Top 98%)11973(Top 219%)
23M23.00 mi1.25 mi28073+712045-112045-127535(Top 97%)11873(Top 97%)11873(Top 217%)
24M24.00 mi1.00 mi28069+412048-312048-327598(Top 97%)11937(Top 98%)11937(Top 218%)
40K24.85 mi0.85 mi28050+1912041+712041+726940(Top 95%)11615(Top 95%)11615(Top 212%)
25.2M25.20 mi0.35 mi28030+2012032+912032+926239(Top 92%)11315(Top 93%)11315(Top 207%)
Finish26.22 mi1.02 mi27993+3712015+1712015+1726733(Top 94%)11496(Top 94%)11496(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

28029

Females

11993

F18-39

11993

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

28053

Females

12010

F18-39

12010

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

28029

Females

11993

F18-39

11993

15K→20K

9.3 - 12.4 mi

Top 99%
×5stories
+106ft-86ft

Overall

28169

Females

12101

F18-39

12101

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

28176

Females

12114

F18-39

12114

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

27807

Females

11892

F18-39

11892

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

27976

Females

12037

F18-39

12037

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

27866

Females

11991

F18-39

11991

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

27423

Females

11785

F18-39

11785

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

27730

Females

11973

F18-39

11973

35K→23M

21.8 - 23.0 mi

Top 97%
×5stories
+23ft-63ft

Overall

27535

Females

11873

F18-39

11873

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

27598

Females

11937

F18-39

11937

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

26940

Females

11615

F18-39

11615

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26239

Females

11315

F18-39

11315

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

26733

Females

11496

F18-39

11496

Passing Analysis

Category:
Athletes Passed
273
Passed By
920
Net Change
-647
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27346
5K → 10K13514-501#27346#27847
10K → 15K22135-113#27847#27960
15K → 20K1492-78#27960#28038
20K → Half729-22#28038#28060
Half → 25K4329+14#28060#28046
25K → 30K2760-33#28046#28079
30K → 20M1025-15#28079#28094
20M → 21M214+17#28094#28077
21M → 35K58-3#28077#28080
35K → 23M1710+7#28080#28073
23M → 24M1410+4#28073#28069
24M → 40K223+19#28069#28050
40K → 25.2M200+20#28050#28030
25.2M → Finish381+37#28030#27993
TOTALS273920-647
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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