Boston Marathon logo
BOSTON MARATHON 2025

Kasey Skinner

Bib: 14070•F

TN

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 28%
Gender (Female)
#0 / 12228
Top 11%
Division (F18-39)
#0 / 5469
Top 20%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:44
Rank: #13427
Start → 5K
7:38/mi
23:44 split
10K· 6.21 mi
47:29
Rank: #13402 (+25)
5K → 10K
7:39/mi
23:45 split
15K· 9.32 mi
1:10:24
Rank: #12460 (+942)
10K → 15K
7:23/mi
22:55 split
20K· 12.43 mi
1:33:21
Rank: #11730 (+730)
15K → 20K
7:23/mi
22:57 split
Half· 13.11 mi
1:38:19
Rank: #11633 (+97)
20K → Half
7:17/mi
4:58 split
25K· 15.53 mi
1:56:08
Rank: #11136 (+497)
Half → 25K
7:21/mi
17:49 split
30K· 18.64 mi
2:19:10
Rank: #10275 (+861)
25K → 30K
7:25/mi
23:02 split
20M
2:29:08
Rank: #9848 (+427)
30K → 20M
7:20/mi
9:58 split
21M
2:36:37
Rank: #9473 (+375)
20M → 21M
7:29/mi
7:29 split
35K· 21.75 mi
2:41:52
Rank: #9272 (+201)
21M → 35K
7:01/mi
5:15 split
23M
2:50:53
Rank: #8908 (+364)
35K → 23M
7:12/mi
9:01 split
24M
2:57:51
Rank: #8615 (+293)
23M → 24M
6:58/mi
6:58 split
40K· 24.85 mi
3:03:57
Rank: #8368 (+247)
24M → 40K
7:08/mi
6:06 split
25.2M
3:06:32
Rank: #8250 (+118)
40K → 25.2M
7:29/mi
2:35 split
Finish· 26.22 mi
3:13:10
Rank: #7961 (+289)
25.2M → Finish
6:31/mi
6:38 split

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 Half
Distance13.11 mi
Time1:38:19
Pace7:30 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:34:51
Pace7:14 /mi
📊Negative Split: 3.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0023:447:3823:44
7:38
-
10K
6.21 mi11:18:4547:297:3923:45
7:39
+0:01
15K
9.32 mi11:41:401:10:247:3322:55
7:23
-0:16
20K
12.43 mi12:04:371:33:217:3122:57
7:23
0:00
Half
13.11 mi12:09:351:38:197:304:58
7:17
-0:06
25K
15.53 mi12:27:241:56:087:2917:49
7:21
+0:04
30K
18.64 mi12:50:262:19:107:2823:02
7:25
+0:04
20M
20.00 mi13:00:242:29:087:279:58
7:20
-0:05
21M
21.00 mi13:07:532:36:377:277:29
7:29
+0:09
35K
21.75 mi13:13:082:41:527:275:15
7:01
-0:28
23M
23.00 mi13:22:092:50:537:269:01
7:12
+0:11
24M
24.00 mi13:29:072:57:517:256:58
6:58
-0:14
40K
24.85 mi13:35:133:03:577:246:06
7:08
+0:10
25.2M
25.20 mi13:37:483:06:327:242:35
7:29
+0:21
Finish
26.22 mi13:44:263:13:107:226:38
6:31
-0:58

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

6:31 /mi

Average Pace

7:22 /mi

Slowest Pace

7:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:57

13% of race

Time at Steady Pace

2:48:13

87% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi10:55:0023:447:3823:44
7:38
#13427
10K
6.21 mi11:18:4547:297:3923:45
7:39
#13402
15K
9.32 mi11:41:401:10:247:3322:55
7:23
#12460
20K
12.43 mi12:04:371:33:217:3122:57
7:23
#11730
Half
13.11 mi12:09:351:38:197:304:58
7:17
#11633
25K
15.53 mi12:27:241:56:087:2917:49
7:21
#11136
30K
18.64 mi12:50:262:19:107:2823:02
7:25
#10275
20M
20.00 mi13:00:242:29:087:279:58
7:20
#9848
21M
21.00 mi13:07:532:36:377:277:29
7:29
#9473
35K
21.75 mi13:13:082:41:527:275:15
7:01
#9272
23M
23.00 mi13:22:092:50:537:269:01
7:12
#8908
24M
24.00 mi13:29:072:57:517:256:58
6:58
#8615
40K
24.85 mi13:35:133:03:577:246:06
7:08
#8368
25.2M
25.20 mi13:37:483:06:327:242:35
7:29
#8250
Finish
26.22 mi13:44:263:13:107:226:38
6:31
#7961
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi134273558355810651(Top 37%)2193(Top 18%)2193(Top 40%)
10K6.21 mi3.10 mi13402+253587-293587-2913412(Top 47%)3606(Top 29%)3606(Top 66%)
15K9.32 mi3.11 mi12460+9423079+5083079+50810651(Top 37%)2193(Top 18%)2193(Top 40%)
20K12.43 mi3.11 mi11730+7302728+3512728+3519796(Top 34%)1867(Top 15%)1867(Top 34%)
Half13.11 mi0.68 mi11633+972675+532675+539843(Top 35%)1859(Top 15%)1859(Top 34%)
25K15.53 mi2.42 mi11136+4972459+2162459+2168734(Top 31%)1518(Top 12%)1518(Top 28%)
30K18.64 mi3.11 mi10275+8612087+3722087+3727148(Top 25%)1071(Top 9%)1071(Top 20%)
20M20.00 mi1.36 mi9848+4271916+1711916+1716026(Top 21%)799(Top 7%)799(Top 15%)
21M21.00 mi1.00 mi9473+3751789+1271789+1274578(Top 16%)514(Top 4%)514(Top 9%)
35K21.75 mi0.75 mi9272+2011720+691720+695534(Top 19%)784(Top 6%)784(Top 14%)
23M23.00 mi1.25 mi8908+3641602+1181602+1184921(Top 17%)657(Top 5%)657(Top 12%)
24M24.00 mi1.00 mi8615+2931510+921510+924483(Top 16%)589(Top 5%)589(Top 11%)
40K24.85 mi0.85 mi8368+2471447+631447+634721(Top 17%)704(Top 6%)704(Top 13%)
25.2M25.20 mi0.35 mi8250+1181415+321415+323470(Top 12%)437(Top 4%)437(Top 8%)
Finish26.22 mi1.02 mi7961+2891336+791336+792910(Top 10%)308(Top 3%)308(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10651

Females

2193

F18-39

2193

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13412

Females

3606

F18-39

3606

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10651

Females

2193

F18-39

2193

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9796

Females

1867

F18-39

1867

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9843

Females

1859

F18-39

1859

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8734

Females

1518

F18-39

1518

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

7148

Females

1071

F18-39

1071

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

6026

Females

799

F18-39

799

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4578

Females

514

F18-39

514

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5534

Females

784

F18-39

784

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4921

Females

657

F18-39

657

23M→24M

23.0 - 24.0 mi

Top 16%
×6story building
+12ft-82ft

Overall

4483

Females

589

F18-39

589

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4721

Females

704

F18-39

704

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3470

Females

437

F18-39

437

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2910

Females

308

F18-39

308

Passing Analysis

Category:
Athletes Passed
5764*
Passed By
298
Net Change
+5466
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13427
5K → 10K297272+25#13427#13402
10K → 15K9486+942#13402#12460
15K → 20K7377+730#12460#11730
20K → Half1025+97#11730#11633
Half → 25K4981+497#11633#11136
25K → 30K8610+861#11136#10275
30K → 20M429*2+427#10275#9848
20M → 21M3750+375#9848#9473
21M → 35K2032+201#9473#9272
35K → 23M3640+364#9272#8908
23M → 24M2941+293#8908#8615
24M → 40K2481+247#8615#8368
40K → 25.2M1180+118#8368#8250
25.2M → Finish2901+289#8250#7961
TOTALS5764*298+5466

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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