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BOSTON MARATHON 2025

Kacy Seynders

Bib: 12686•F

GA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 26%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:12
Rank: #9037
Start → 5K
22:12 | 7:09/mi
10K· 6.21 mi
44:01
Rank: #8540 (+497)
5K → 10K
21:49 | 7:01/mi
15K· 9.32 mi
1:05:42
Rank: #8107 (+433)
10K → 15K
21:41 | 6:59/mi
20K· 12.43 mi
1:27:49
Rank: #7938 (+169)
15K → 20K
22:07 | 7:07/mi
Half· 13.11 mi
1:32:41
Rank: #7960 (-22)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:50:36
Rank: #8073 (-113)
Half → 25K
17:55 | 7:23/mi
30K· 18.64 mi
2:13:51
Rank: #7903 (+170)
25K → 30K
23:15 | 7:29/mi
20M
2:24:06
Rank: #7791 (+112)
30K → 20M
10:15 | 7:33/mi
21M
2:32:02
Rank: #7682 (+109)
20M → 21M
7:56 | 7:56/mi
35K· 21.75 mi
2:37:39
Rank: #7668 (+14)
21M → 35K
5:37 | 7:30/mi
23M
2:47:07
Rank: #7578 (+90)
35K → 23M
9:28 | 7:34/mi
24M
2:54:44
Rank: #7587 (-9)
23M → 24M
7:37 | 7:37/mi
40K· 24.85 mi
3:01:19
Rank: #7555 (+32)
24M → 40K
6:35 | 7:42/mi
25.2M
3:03:56
Rank: #7451 (+104)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:11:39
Rank: #7510 (-59)
25.2M → Finish
7:43 | 7:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:41
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:38:58
Pace7:33 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5522:127:0922:12
7:09
-
10K
6.21 mi11:11:4444:017:0521:49
7:01
-0:08
15K
9.32 mi11:33:251:05:427:0321:41
6:59
-0:02
20K
12.43 mi11:55:321:27:497:0422:07
7:07
+0:08
Half
13.11 mi12:00:241:32:417:044:52
7:08
+0:01
25K
15.53 mi12:18:191:50:367:0717:55
7:23
+0:15
30K
18.64 mi12:41:342:13:517:1123:15
7:29
+0:06
20M
20.00 mi12:51:492:24:067:1210:15
7:33
+0:04
21M
21.00 mi12:59:452:32:027:147:56
7:56
+0:23
35K
21.75 mi13:05:222:37:397:155:37
7:30
-0:26
23M
23.00 mi13:14:502:47:077:169:28
7:34
+0:04
24M
24.00 mi13:22:272:54:447:177:37
7:37
+0:03
40K
24.85 mi13:29:023:01:197:186:35
7:42
+0:05
25.2M
25.20 mi13:31:393:03:567:182:37
7:35
-0:07
Finish
26.22 mi13:39:223:11:397:197:43
7:35
0:00

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

6:59 /mi

Average Pace

7:19 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:57:08

92% of race

Time at Steady Pace

14:31

8% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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 mi10:49:5522:127:0922:12
7:09
#9037
10K
6.21 mi11:11:4444:017:0521:49
7:01
#8540
15K
9.32 mi11:33:251:05:427:0321:41
6:59
#8107
20K
12.43 mi11:55:321:27:497:0422:07
7:07
#7938
Half
13.11 mi12:00:241:32:417:044:52
7:08
#7960
25K
15.53 mi12:18:191:50:367:0717:55
7:23
#8073
30K
18.64 mi12:41:342:13:517:1123:15
7:29
#7903
20M
20.00 mi12:51:492:24:067:1210:15
7:33
#7791
21M
21.00 mi12:59:452:32:027:147:56
7:56
#7682
35K
21.75 mi13:05:222:37:397:155:37
7:30
#7668
23M
23.00 mi13:14:502:47:077:169:28
7:34
#7578
24M
24.00 mi13:22:272:54:447:177:37
7:37
#7587
40K
24.85 mi13:29:023:01:197:186:35
7:42
#7555
25.2M
25.20 mi13:31:393:03:567:182:37
7:35
#7451
Finish
26.22 mi13:39:223:11:397:197:43
7:35
#7510
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9037138213827497(Top 26%)868(Top 7%)868(Top 16%)
10K6.21 mi3.10 mi8540+4971202+1801202+1808092(Top 28%)1043(Top 9%)1043(Top 19%)
15K9.32 mi3.11 mi8107+4331045+1571045+1577497(Top 26%)868(Top 7%)868(Top 16%)
20K12.43 mi3.11 mi7938+1691003+421003+427646(Top 27%)987(Top 8%)987(Top 18%)
Half13.11 mi0.68 mi7960-221012-91012-98597(Top 30%)1318(Top 11%)1318(Top 24%)
25K15.53 mi2.42 mi8073-1131080-681080-689074(Top 32%)1660(Top 14%)1660(Top 30%)
30K18.64 mi3.11 mi7903+1701070+101070+107644(Top 27%)1247(Top 10%)1247(Top 23%)
20M20.00 mi1.36 mi7791+1121062+81062+87329(Top 26%)1275(Top 10%)1275(Top 23%)
21M21.00 mi1.00 mi7682+1091056+61056+67003(Top 25%)1301(Top 11%)1301(Top 24%)
35K21.75 mi0.75 mi7668+141071-151071-158693(Top 31%)1972(Top 16%)1972(Top 36%)
23M23.00 mi1.25 mi7578+901088-171088-177008(Top 25%)1400(Top 11%)1400(Top 26%)
24M24.00 mi1.00 mi7587-91123-351123-358542(Top 30%)2104(Top 17%)2104(Top 38%)
40K24.85 mi0.85 mi7555+321149-261149-268093(Top 28%)2020(Top 17%)2020(Top 37%)
25.2M25.20 mi0.35 mi7451+1041124+251124+253705(Top 13%)506(Top 4%)506(Top 9%)
Finish26.22 mi1.02 mi7510-591176-521176-529791(Top 34%)2909(Top 24%)2909(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7497

Females

868

F18-39

868

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

8092

Females

1043

F18-39

1043

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7497

Females

868

F18-39

868

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

7646

Females

987

F18-39

987

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8597

Females

1318

F18-39

1318

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

9074

Females

1660

F18-39

1660

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7644

Females

1247

F18-39

1247

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7329

Females

1275

F18-39

1275

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7003

Females

1301

F18-39

1301

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8693

Females

1972

F18-39

1972

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

7008

Females

1400

F18-39

1400

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8542

Females

2104

F18-39

2104

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

8093

Females

2020

F18-39

2020

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3705

Females

506

F18-39

506

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9791

Females

2909

F18-39

2909

Passing Analysis

Category:
Athletes Passed
2407
Passed By
880
Net Change
+1527
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9037
5K → 10K54750+497#9037#8540
10K → 15K44815+433#8540#8107
15K → 20K22758+169#8107#7938
20K → Half1739-22#7938#7960
Half → 25K99212-113#7960#8073
25K → 30K26191+170#8073#7903
30K → 20M14735+112#7903#7791
20M → 21M15546+109#7791#7682
21M → 35K6147+14#7682#7668
35K → 23M14151+90#7668#7578
23M → 24M6473-9#7578#7587
24M → 40K8452+32#7587#7555
40K → 25.2M1084+104#7555#7451
25.2M → Finish48107-59#7451#7510
TOTALS2407880+1527
📊

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