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BOSTON MARATHON 2025

Alexandra Paisley

CA

Bib: 17750 F

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:34/mi
23:30
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:34/mi
47:01
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:52/mi
1:11:26
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:55/mi
1:39:09
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:11/mi
1:44:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:36/mi
2:05:34
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:09/mi
2:37:06
↑ 181↓ 1480.2%
138 ft elev
20M
9:17/mi
2:49:43
↑ 64↓ 500.2%
148 ft elev
21M
9:54/mi
2:59:37
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:56/mi
3:07:48
↑ 17↓ 861.7%
156 ft elev
23M
10:21/mi
3:20:46
↑ 23↓ 630.6%
116 ft elev
24M
9:31/mi
3:30:17
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:49/mi
3:38:41
↓ 200.3%
20 ft elev
25.2M
9:54/mi
3:42:06
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:26/mi
3:50:42
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:44:447:59 /mi⚡ faster
2nd Half
2:05:589:37 /mi+20.3%
Positive split — 20.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0823:307:3423:30
7:34
-
10K
6.21 mi11:37:3947:017:3423:31
7:34
0:00
15K
9.32 mi12:02:041:11:267:4024:25
7:52
+0:18
20K
12.43 mi12:29:471:39:097:5927:43
8:55
+1:03
Half
13.11 mi12:35:221:44:447:595:35
8:11
-0:44
25K
15.53 mi12:56:122:05:348:0520:50
8:36
+0:25
30K
18.64 mi13:27:442:37:068:2631:32
10:09
+1:33
20M
20.00 mi13:40:212:49:438:2912:37
9:17
-0:52
21M
21.00 mi13:50:152:59:378:339:54
9:54
+0:37
35K
21.75 mi13:58:263:07:488:388:11
10:56
+1:02
23M
23.00 mi14:11:243:20:468:4412:58
10:21
-0:35
24M
24.00 mi14:20:553:30:178:469:31
9:31
-0:50
40K
24.85 mi14:29:193:38:418:488:24
9:49
+0:18
25.2M
25.20 mi14:32:443:42:068:493:25
9:54
+0:05
Finish
26.22 mi14:41:203:50:428:488:36
8:26
-1:28

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

7:34 /mi

Average Pace

8:48 /mi

Slowest Pace

10:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:46:27

46% of race

Time at Steady Pace

49:51

22% of race

Time at Slower Pace

1:14:24

32% of race

Average Pace: 8:48 /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 mi11:14:0823:307:3423:30
7:34
#12822
10K
6.21 mi11:37:3947:017:3423:31
7:34
#12731
15K
9.32 mi12:02:041:11:267:4024:25
7:52
#13449
20K
12.43 mi12:29:471:39:097:5927:43
8:55
#15757
Half
13.11 mi12:35:221:44:447:595:35
8:11
#15854
25K
15.53 mi12:56:122:05:348:0520:50
8:36
#16197
30K
18.64 mi13:27:442:37:068:2631:32
10:09
#17652
20M
20.00 mi13:40:212:49:438:2912:37
9:17
#17685
21M
21.00 mi13:50:152:59:378:339:54
9:54
#17717
35K
21.75 mi13:58:263:07:488:388:11
10:56
#18145
23M
23.00 mi14:11:243:20:468:4412:58
10:21
#18450
24M
24.00 mi14:20:553:30:178:469:31
9:31
#18539
40K
24.85 mi14:29:193:38:418:488:24
9:49
#18604
25.2M
25.20 mi14:32:443:42:068:493:25
9:54
#18563
Finish
26.22 mi14:41:203:50:428:488:36
8:26
#18475
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi12822322732271491945464546
10K6.21 mi3.10 mi12731+913198+293198+291276932413241
15K9.32 mi3.11 mi13449-7183657-4593657-4591491945464546
20K12.43 mi3.11 mi15757-23085017-13605017-13602058078187818
Half13.11 mi0.68 mi15854-975065-485065-481724859135913
25K15.53 mi2.42 mi16197-3435277-2125277-2121778263026302
30K18.64 mi3.11 mi17652-14556214-9376214-9372206288028802
20M20.00 mi1.36 mi17685-336256-426256-421823168496849
21M21.00 mi1.00 mi17717-326279-236279-231791867486748
35K21.75 mi0.75 mi18145-4286536-2576536-257240831010510105
23M23.00 mi1.25 mi18450-3056734-1986734-1982159688708870
24M24.00 mi1.00 mi18539-896817-836817-831968079197919
40K24.85 mi0.85 mi18604-656880-636880-631989980958095
25.2M25.20 mi0.35 mi18563+416872+86872+81665864266426
Finish26.22 mi1.02 mi18475+886841+316841+311587059595959

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14919

Females

4546

F18-39

4546

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12769

Females

3241

F18-39

3241

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14919

Females

4546

F18-39

4546

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20580

Females

7818

F18-39

7818

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17248

Females

5913

F18-39

5913

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17782

Females

6302

F18-39

6302

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22062

Females

8802

F18-39

8802

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18231

Females

6849

F18-39

6849

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17918

Females

6748

F18-39

6748

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24083

Females

10105

F18-39

10105

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21596

Females

8870

F18-39

8870

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19680

Females

7919

F18-39

7919

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19899

Females

8095

F18-39

8095

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16658

Females

6426

F18-39

6426

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15870

Females

5959

F18-39

5959

Passing Analysis

Category:
Athletes Passed
1051
Passed By
6704
Net Change
-5653
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12822
5K → 10K332241+91#12822#12731
10K → 15K49767-718#12731#13449
15K → 20K152323-2308#13449#15757
20K → Half14111-97#15757#15854
Half → 25K87430-343#15854#16197
25K → 30K251480-1455#16197#17652
30K → 20M109142-33#17652#17685
20M → 21M93125-32#17685#17717
21M → 35K12440-428#17717#18145
35K → 23M47352-305#18145#18450
23M → 24M47136-89#18450#18539
24M → 40K55120-65#18539#18604
40K → 25.2M5514+41#18604#18563
25.2M → Finish11123+88#18563#18475
TOTALS10516704-5653

Passing Charts

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