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BOSTON MARATHON 2025

Katherine Kelly

Bib: 12446•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:37
Rank: #7505
Start → 5K
21:37 | 6:57/mi
10K· 6.21 mi
43:26
Rank: #7782 (-277)
5K → 10K
21:49 | 7:01/mi
15K· 9.32 mi
1:04:41
Rank: #7377 (+405)
10K → 15K
21:15 | 6:50/mi
20K· 12.43 mi
1:26:03
Rank: #7027 (+350)
15K → 20K
21:22 | 6:53/mi
Half· 13.11 mi
1:30:40
Rank: #6954 (+73)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:47:33
Rank: #6753 (+201)
Half → 25K
16:53 | 6:58/mi
30K· 18.64 mi
2:10:51
Rank: #6799 (-46)
25K → 30K
23:18 | 7:30/mi
20M
2:20:52
Rank: #6670 (+129)
30K → 20M
10:01 | 7:22/mi
21M
2:28:25
Rank: #6488 (+182)
20M → 21M
7:33 | 7:33/mi
35K· 21.75 mi
2:33:22
Rank: #6330 (+158)
21M → 35K
4:57 | 6:37/mi
23M
2:42:36
Rank: #6239 (+91)
35K → 23M
9:14 | 7:22/mi
24M
2:49:41
Rank: #6131 (+108)
23M → 24M
7:05 | 7:05/mi
40K· 24.85 mi
2:55:55
Rank: #6039 (+92)
24M → 40K
6:14 | 7:17/mi
25.2M
2:58:35
Rank: #6001 (+38)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:05:17
Rank: #5811 (+190)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:40
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:34:37
Pace7:13 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0821:376:5721:37
6:57
-
10K
6.21 mi11:10:5743:266:5921:49
7:01
+0:04
15K
9.32 mi11:32:121:04:416:5621:15
6:50
-0:11
20K
12.43 mi11:53:341:26:036:5521:22
6:53
+0:03
Half
13.11 mi11:58:111:30:406:554:37
6:46
-0:07
25K
15.53 mi12:15:041:47:336:5516:53
6:58
+0:12
30K
18.64 mi12:38:222:10:517:0123:18
7:30
+0:32
20M
20.00 mi12:48:232:20:527:0310:01
7:22
-0:08
21M
21.00 mi12:55:562:28:257:047:33
7:33
+0:11
35K
21.75 mi13:00:532:33:227:034:57
6:37
-0:56
23M
23.00 mi13:10:072:42:367:049:14
7:22
+0:45
24M
24.00 mi13:17:122:49:417:047:05
7:05
-0:17
40K
24.85 mi13:23:262:55:557:056:14
7:17
+0:12
25.2M
25.20 mi13:26:062:58:357:052:40
7:44
+0:27
Finish
26.22 mi13:32:483:05:177:046:42
6:34
-1:10

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

6:34 /mi

Average Pace

7:04 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:17

68% of race

Time at Steady Pace

59:00

32% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:04 /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 mi10:49:0821:376:5721:37
6:57
#7505
10K
6.21 mi11:10:5743:266:5921:49
7:01
#7782
15K
9.32 mi11:32:121:04:416:5621:15
6:50
#7377
20K
12.43 mi11:53:341:26:036:5521:22
6:53
#7027
Half
13.11 mi11:58:111:30:406:554:37
6:46
#6954
25K
15.53 mi12:15:041:47:336:5516:53
6:58
#6753
30K
18.64 mi12:38:222:10:517:0123:18
7:30
#6799
20M
20.00 mi12:48:232:20:527:0310:01
7:22
#6670
21M
21.00 mi12:55:562:28:257:047:33
7:33
#6488
35K
21.75 mi13:00:532:33:227:034:57
6:37
#6330
23M
23.00 mi13:10:072:42:367:049:14
7:22
#6239
24M
24.00 mi13:17:122:49:417:047:05
7:05
#6131
40K
24.85 mi13:23:262:55:557:056:14
7:17
#6039
25.2M
25.20 mi13:26:062:58:357:052:40
7:44
#6001
Finish
26.22 mi13:32:483:05:177:046:42
6:34
#5811
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi75058128126495(Top 23%)619(Top 5%)619(Top 11%)
10K6.21 mi3.10 mi7782-277918-106918-1068088(Top 28%)1039(Top 8%)1039(Top 19%)
15K9.32 mi3.11 mi7377+405802+116802+1166495(Top 23%)619(Top 5%)619(Top 11%)
20K12.43 mi3.11 mi7027+350718+84718+846039(Top 21%)558(Top 5%)558(Top 10%)
Half13.11 mi0.68 mi6954+73700+18700+185949(Top 21%)547(Top 4%)547(Top 10%)
25K15.53 mi2.42 mi6753+201672+28672+286085(Top 21%)608(Top 5%)608(Top 11%)
30K18.64 mi3.11 mi6799-46728-56728-567739(Top 27%)1284(Top 11%)1284(Top 23%)
20M20.00 mi1.36 mi6670+129720+8720+86224(Top 22%)860(Top 7%)860(Top 16%)
21M21.00 mi1.00 mi6488+182692+28692+284894(Top 17%)585(Top 5%)585(Top 11%)
35K21.75 mi0.75 mi6330+158665+27665+273098(Top 11%)247(Top 2%)247(Top 5%)
23M23.00 mi1.25 mi6239+91667-2667-25905(Top 21%)977(Top 8%)977(Top 18%)
24M24.00 mi1.00 mi6131+108654+13654+135147(Top 18%)775(Top 6%)775(Top 14%)
40K24.85 mi0.85 mi6039+92650+4650+45620(Top 20%)971(Top 8%)971(Top 18%)
25.2M25.20 mi0.35 mi6001+38648+2648+24590(Top 16%)737(Top 6%)737(Top 13%)
Finish26.22 mi1.02 mi5811+190623+25623+253239(Top 11%)372(Top 3%)372(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6495

Females

619

F18-39

619

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

8088

Females

1039

F18-39

1039

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6495

Females

619

F18-39

619

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

6039

Females

558

F18-39

558

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5949

Females

547

F18-39

547

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

6085

Females

608

F18-39

608

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7739

Females

1284

F18-39

1284

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

6224

Females

860

F18-39

860

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4894

Females

585

F18-39

585

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3098

Females

247

F18-39

247

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5905

Females

977

F18-39

977

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

5147

Females

775

F18-39

775

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5620

Females

971

F18-39

971

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4590

Females

737

F18-39

737

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3239

Females

372

F18-39

372

Passing Analysis

Category:
Athletes Passed
2436
Passed By
742
Net Change
+1694
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7505
5K → 10K103380-277#7505#7782
10K → 15K42318+405#7782#7377
15K → 20K36313+350#7377#7027
20K → Half785+73#7027#6954
Half → 25K22625+201#6954#6753
25K → 30K160206-46#6753#6799
30K → 20M15425+129#6799#6670
20M → 21M1908+182#6670#6488
21M → 35K1580+158#6488#6330
35K → 23M11827+91#6330#6239
23M → 24M12214+108#6239#6131
24M → 40K10513+92#6131#6039
40K → 25.2M435+38#6039#6001
25.2M → Finish1933+190#6001#5811
TOTALS2436742+1694
📊

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