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BOSTON MARATHON 2025

Zaire Armstrong

Bib: 31907•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
28:04
Rank: #22575
Start → 5K
28:04 | 9:02/mi
10K· 6.21 mi
55:44
Rank: #22309 (+266)
5K → 10K
27:40 | 8:54/mi
15K· 9.32 mi
1:24:55
Rank: #22751 (-442)
10K → 15K
29:11 | 9:24/mi
20K· 12.43 mi
1:54:56
Rank: #22980 (-229)
15K → 20K
30:01 | 9:40/mi
Half· 13.11 mi
2:01:26
Rank: #23011 (-31)
20K → Half
6:30 | 9:32/mi
25K· 15.53 mi
2:24:45
Rank: #22855 (+156)
Half → 25K
23:19 | 9:37/mi
30K· 18.64 mi
2:58:04
Rank: #22963 (-108)
25K → 30K
33:19 | 10:43/mi
20M
3:13:02
Rank: #22999 (-36)
30K → 20M
14:58 | 11:01/mi
21M
3:25:48
Rank: #23145 (-146)
20M → 21M
12:46 | 12:46/mi
35K· 21.75 mi
3:33:50
Rank: #23172 (-27)
21M → 35K
8:02 | 10:44/mi
23M
3:47:56
Rank: #23232 (-60)
35K → 23M
14:06 | 11:16/mi
24M
3:59:08
Rank: #23271 (-39)
23M → 24M
11:12 | 11:12/mi
40K· 24.85 mi
4:10:28
Rank: #23501 (-230)
24M → 40K
11:20 | 13:15/mi
25.2M
4:15:08
Rank: #23565 (-64)
40K → 25.2M
4:40 | 13:32/mi
Finish· 26.22 mi
4:26:33
Rank: #23651 (-86)
25.2M → Finish
11:25 | 11:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:26
Pace9:16 /mi
2nd Half
Distance13.11 mi
Time2:25:07
Pace11:04 /mi
📊Positive Split: 19.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5828:049:0228:04
9:02
-
10K
6.21 mi12:18:3855:448:5827:40
8:54
-0:08
15K
9.32 mi12:47:491:24:559:0729:11
9:24
+0:30
20K
12.43 mi13:17:501:54:569:1530:01
9:40
+0:16
Half
13.11 mi13:24:202:01:269:166:30
9:32
-0:08
25K
15.53 mi13:47:392:24:459:1923:19
9:37
+0:05
30K
18.64 mi14:20:582:58:049:3333:19
10:43
+1:06
20M
20.00 mi14:35:563:13:029:3914:58
11:01
+0:18
21M
21.00 mi14:48:423:25:489:4812:46
12:46
+1:45
35K
21.75 mi14:56:443:33:509:508:02
10:44
-2:02
23M
23.00 mi15:10:503:47:569:5514:06
11:16
+0:32
24M
24.00 mi15:22:023:59:089:5811:12
11:12
-0:04
40K
24.85 mi15:33:224:10:2810:0511:20
13:15
+2:03
25.2M
25.20 mi15:38:024:15:0810:074:40
13:32
+0:17
Finish
26.22 mi15:49:274:26:3310:1011:25
11:12
-2:20

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

8:54 /mi

Average Pace

10:10 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:45

54% of race

Time at Steady Pace

1:33:02

35% of race

Time at Slower Pace

28:46

11% of race

Average Pace: 10:10 /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 mi11:50:5828:049:0228:04
9:02
#22575
10K
6.21 mi12:18:3855:448:5827:40
8:54
#22309
15K
9.32 mi12:47:491:24:559:0729:11
9:24
#22751
20K
12.43 mi13:17:501:54:569:1530:01
9:40
#22980
Half
13.11 mi13:24:202:01:269:166:30
9:32
#23011
25K
15.53 mi13:47:392:24:459:1923:19
9:37
#22855
30K
18.64 mi14:20:582:58:049:3333:19
10:43
#22963
20M
20.00 mi14:35:563:13:029:3914:58
11:01
#22999
21M
21.00 mi14:48:423:25:489:4812:46
12:46
#23145
35K
21.75 mi14:56:443:33:509:508:02
10:44
#23172
23M
23.00 mi15:10:503:47:569:5514:06
11:16
#23232
24M
24.00 mi15:22:023:59:089:5811:12
11:12
#23271
40K
24.85 mi15:33:224:10:2810:0511:20
13:15
#23501
25.2M
25.20 mi15:38:024:15:0810:074:40
13:32
#23565
Finish
26.22 mi15:49:274:26:3310:1011:25
11:12
#23651
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi225758950895023464(Top 83%)9358(Top 77%)9358(Top 171%)
10K6.21 mi3.10 mi22309+2668786+1648786+16421965(Top 77%)8578(Top 70%)8578(Top 157%)
15K9.32 mi3.11 mi22751-4428985-1998985-19923464(Top 83%)9358(Top 77%)9358(Top 171%)
20K12.43 mi3.11 mi22980-2299118-1339118-13323387(Top 82%)9358(Top 77%)9358(Top 171%)
Half13.11 mi0.68 mi23011-319130-129130-1223662(Top 83%)9523(Top 78%)9523(Top 174%)
25K15.53 mi2.42 mi22855+1569066+649066+6422260(Top 78%)8795(Top 72%)8795(Top 161%)
30K18.64 mi3.11 mi22963-1089167-1019167-10123452(Top 83%)9581(Top 78%)9581(Top 175%)
20M20.00 mi1.36 mi22999-369211-449211-4423612(Top 83%)9744(Top 80%)9744(Top 178%)
21M21.00 mi1.00 mi23145-1469301-909301-9024758(Top 87%)10442(Top 85%)10442(Top 191%)
35K21.75 mi0.75 mi23172-279323-229323-2223678(Top 83%)9888(Top 81%)9888(Top 181%)
23M23.00 mi1.25 mi23232-609393-709393-7023813(Top 84%)10009(Top 82%)10009(Top 183%)
24M24.00 mi1.00 mi23271-399433-409433-4024397(Top 86%)10322(Top 84%)10322(Top 189%)
40K24.85 mi0.85 mi23501-2309560-1279560-12726556(Top 93%)11421(Top 93%)11421(Top 209%)
25.2M25.20 mi0.35 mi23565-649608-489608-4825742(Top 91%)11059(Top 90%)11059(Top 202%)
Finish26.22 mi1.02 mi23651-869666-589666-5825717(Top 91%)11005(Top 90%)11005(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23464

Females

9358

F18-39

9358

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

21965

Females

8578

F18-39

8578

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23464

Females

9358

F18-39

9358

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23387

Females

9358

F18-39

9358

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23662

Females

9523

F18-39

9523

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22260

Females

8795

F18-39

8795

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

23452

Females

9581

F18-39

9581

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

23612

Females

9744

F18-39

9744

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24758

Females

10442

F18-39

10442

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23678

Females

9888

F18-39

9888

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

23813

Females

10009

F18-39

10009

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24397

Females

10322

F18-39

10322

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26556

Females

11421

F18-39

11421

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25742

Females

11059

F18-39

11059

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2stories
+22ft-21ft

Overall

25717

Females

11005

F18-39

11005

Passing Analysis

Category:
Athletes Passed
1214
Passed By
2290
Net Change
-1076
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22575
5K → 10K410144+266#22575#22309
10K → 15K71513-442#22309#22751
15K → 20K115344-229#22751#22980
20K → Half2455-31#22980#23011
Half → 25K21155+156#23011#22855
25K → 30K118226-108#22855#22963
30K → 20M65101-36#22963#22999
20M → 21M31177-146#22999#23145
21M → 35K3259-27#23145#23172
35K → 23M55115-60#23172#23232
23M → 24M3675-39#23232#23271
24M → 40K12242-230#23271#23501
40K → 25.2M1377-64#23501#23565
25.2M → Finish21107-86#23565#23651
TOTALS12142290-1076
📊

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