Boston Marathon logo
BOSTON MARATHON 2025

Kasey Ayer

Bib: 26697•F

RI

0:00
0:00
/ mi
Be the first to cheer!
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
27:52
Rank: #22305
Start → 5K
27:52 | 8:58/mi
10K· 6.21 mi
55:24
Rank: #22037 (+268)
5K → 10K
27:32 | 8:52/mi
15K· 9.32 mi
1:21:26
Rank: #20941 (+1096)
10K → 15K
26:02 | 8:23/mi
20K· 12.43 mi
1:49:59
Rank: #21184 (-243)
15K → 20K
28:33 | 9:11/mi
Half· 13.11 mi
1:55:47
Rank: #21094 (+90)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:17:31
Rank: #20881 (+213)
Half → 25K
21:44 | 8:58/mi
30K· 18.64 mi
2:47:39
Rank: #20842 (+39)
25K → 30K
30:08 | 9:42/mi
20M
3:01:36
Rank: #20942 (-100)
30K → 20M
13:57 | 10:16/mi
21M
3:12:51
Rank: #21038 (-96)
20M → 21M
11:15 | 11:15/mi
35K· 21.75 mi
3:20:46
Rank: #21169 (-131)
21M → 35K
7:55 | 10:35/mi
23M
3:35:45
Rank: #21555 (-386)
35K → 23M
14:59 | 11:58/mi
24M
3:47:54
Rank: #21834 (-279)
23M → 24M
12:09 | 12:09/mi
40K· 24.85 mi
3:58:28
Rank: #22052 (-218)
24M → 40K
10:34 | 12:22/mi
25.2M
4:02:53
Rank: #22122 (-70)
40K → 25.2M
4:25 | 12:48/mi
Finish· 26.22 mi
4:13:46
Rank: #22208 (-86)
25.2M → Finish
10:53 | 10:41/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:47
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time2:17:59
Pace10:32 /mi
📊Positive Split: 19.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5827:528:5827:52
8:58
-
10K
6.21 mi12:12:3055:248:5527:32
8:52
-0:06
15K
9.32 mi12:38:321:21:268:4426:02
8:23
-0:29
20K
12.43 mi13:07:051:49:598:5128:33
9:11
+0:48
Half
13.11 mi13:12:531:55:478:505:48
8:30
-0:41
25K
15.53 mi13:34:372:17:318:5121:44
8:58
+0:28
30K
18.64 mi14:04:452:47:399:0030:08
9:42
+0:44
20M
20.00 mi14:18:423:01:369:0513:57
10:16
+0:34
21M
21.00 mi14:29:573:12:519:1111:15
11:15
+0:59
35K
21.75 mi14:37:523:20:469:147:55
10:35
-0:40
23M
23.00 mi14:52:513:35:459:2314:59
11:58
+1:23
24M
24.00 mi15:05:003:47:549:3012:09
12:09
+0:11
40K
24.85 mi15:15:343:58:289:3610:34
12:22
+0:13
25.2M
25.20 mi15:19:594:02:539:384:25
12:48
+0:26
Finish
26.22 mi15:30:524:13:469:4110:53
10:41
-2:07

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

8:23 /mi

Average Pace

9:41 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:31

54% of race

Time at Steady Pace

1:02:53

25% of race

Time at Slower Pace

53:22

21% of race

Average Pace: 9:41 /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 mi11:44:5827:528:5827:52
8:58
#22305
10K
6.21 mi12:12:3055:248:5527:32
8:52
#22037
15K
9.32 mi12:38:321:21:268:4426:02
8:23
#20941
20K
12.43 mi13:07:051:49:598:5128:33
9:11
#21184
Half
13.11 mi13:12:531:55:478:505:48
8:30
#21094
25K
15.53 mi13:34:372:17:318:5121:44
8:58
#20881
30K
18.64 mi14:04:452:47:399:0030:08
9:42
#20842
20M
20.00 mi14:18:423:01:369:0513:57
10:16
#20942
21M
21.00 mi14:29:573:12:519:1111:15
11:15
#21038
35K
21.75 mi14:37:523:20:469:147:55
10:35
#21169
23M
23.00 mi14:52:513:35:459:2314:59
11:58
#21555
24M
24.00 mi15:05:003:47:549:3012:09
12:09
#21834
40K
24.85 mi15:15:343:58:289:3610:34
12:22
#22052
25.2M
25.20 mi15:19:594:02:539:384:25
12:48
#22122
Finish
26.22 mi15:30:524:13:469:4110:53
10:41
#22208
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi223058800880018590(Top 65%)6656(Top 54%)6656(Top 122%)
10K6.21 mi3.10 mi22037+2688634+1668634+16621715(Top 76%)8432(Top 69%)8432(Top 154%)
15K9.32 mi3.11 mi20941+10968012+6228012+62218590(Top 65%)6656(Top 54%)6656(Top 122%)
20K12.43 mi3.11 mi21184-2438134-1228134-12221862(Top 77%)8516(Top 70%)8516(Top 156%)
Half13.11 mi0.68 mi21094+908078+568078+5619296(Top 68%)7087(Top 58%)7087(Top 130%)
25K15.53 mi2.42 mi20881+2137974+1047974+10419759(Top 70%)7401(Top 61%)7401(Top 135%)
30K18.64 mi3.11 mi20842+398010-368010-3620700(Top 73%)8053(Top 66%)8053(Top 147%)
20M20.00 mi1.36 mi20942-1008062-528062-5221774(Top 77%)8778(Top 72%)8778(Top 161%)
21M21.00 mi1.00 mi21038-968145-838145-8322052(Top 78%)8998(Top 74%)8998(Top 165%)
35K21.75 mi0.75 mi21169-1318227-828227-8223347(Top 82%)9726(Top 80%)9726(Top 178%)
23M23.00 mi1.25 mi21555-3868464-2378464-23725077(Top 88%)10643(Top 87%)10643(Top 195%)
24M24.00 mi1.00 mi21834-2798649-1858649-18525850(Top 91%)11058(Top 90%)11058(Top 202%)
40K24.85 mi0.85 mi22052-2188788-1398788-13925466(Top 90%)10893(Top 89%)10893(Top 199%)
25.2M25.20 mi0.35 mi22122-708834-468834-4624767(Top 87%)10552(Top 86%)10552(Top 193%)
Finish26.22 mi1.02 mi22208-868898-648898-6424698(Top 87%)10506(Top 86%)10506(Top 192%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18590

Females

6656

F18-39

6656

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

21715

Females

8432

F18-39

8432

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18590

Females

6656

F18-39

6656

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

21862

Females

8516

F18-39

8516

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19296

Females

7087

F18-39

7087

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

19759

Females

7401

F18-39

7401

25K→30K

15.5 - 18.6 mi

Top 73%
×9stories
+181ft-148ft

Overall

20700

Females

8053

F18-39

8053

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21774

Females

8778

F18-39

8778

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

22052

Females

8998

F18-39

8998

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23347

Females

9726

F18-39

9726

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

25077

Females

10643

F18-39

10643

23M→24M

23.0 - 24.0 mi

Top 91%
×6stories
+12ft-82ft

Overall

25850

Females

11058

F18-39

11058

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25466

Females

10893

F18-39

10893

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24767

Females

10552

F18-39

10552

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

24698

Females

10506

F18-39

10506

Passing Analysis

Category:
Athletes Passed
2469
Passed By
2372
Net Change
+97
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22305
5K → 10K411143+268#22305#22037
10K → 15K11004+1096#22037#20941
15K → 20K130373-243#20941#21184
20K → Half977+90#21184#21094
Half → 25K25340+213#21094#20881
25K → 30K241202+39#20881#20842
30K → 20M67167-100#20842#20942
20M → 21M61157-96#20942#21038
21M → 35K29160-131#21038#21169
35K → 23M30416-386#21169#21555
23M → 24M8287-279#21555#21834
24M → 40K8226-218#21834#22052
40K → 25.2M1080-70#22052#22122
25.2M → Finish24110-86#22122#22208
TOTALS24692372+97
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing