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BOSTON MARATHON 2025

Katherine Hartnett

Bib: 31409•F

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
32:00
Rank: #26293
Start → 5K
32:00 | 10:18/mi
10K· 6.21 mi
1:04:05
Rank: #26107 (+186)
5K → 10K
32:05 | 10:20/mi
15K· 9.32 mi
1:36:09
Rank: #25942 (+165)
10K → 15K
32:04 | 10:19/mi
20K· 12.43 mi
2:08:09
Rank: #25633 (+309)
15K → 20K
32:00 | 10:18/mi
Half· 13.11 mi
2:15:05
Rank: #25612 (+21)
20K → Half
6:56 | 10:10/mi
25K· 15.53 mi
2:41:18
Rank: #25477 (+135)
Half → 25K
26:13 | 10:49/mi
30K· 18.64 mi
3:16:21
Rank: #25299 (+178)
25K → 30K
35:03 | 11:17/mi
20M
3:31:05
Rank: #25159 (+140)
30K → 20M
14:44 | 10:51/mi
21M
3:43:09
Rank: #25090 (+69)
20M → 21M
12:04 | 12:04/mi
35K· 21.75 mi
3:52:28
Rank: #25166 (-76)
21M → 35K
9:19 | 12:27/mi
23M
4:09:02
Rank: #25273 (-107)
35K → 23M
16:34 | 13:14/mi
24M
4:20:30
Rank: #25260 (+13)
23M → 24M
11:28 | 11:28/mi
40K· 24.85 mi
4:31:28
Rank: #25296 (-36)
24M → 40K
10:58 | 12:50/mi
25.2M
4:36:09
Rank: #25304 (-8)
40K → 25.2M
4:41 | 13:35/mi
Finish· 26.22 mi
4:47:47
Rank: #25349 (-45)
25.2M → Finish
11:38 | 11:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:05
Pace10:18 /mi
2nd Half
Distance13.11 mi
Time2:32:42
Pace11:39 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:1332:0010:1832:00
10:18
-
10K
6.21 mi12:26:181:04:0510:1932:05
10:20
+0:02
15K
9.32 mi12:58:221:36:0910:1932:04
10:19
-0:01
20K
12.43 mi13:30:222:08:0910:1932:00
10:18
-0:01
Half
13.11 mi13:37:182:15:0510:186:56
10:10
-0:08
25K
15.53 mi14:03:312:41:1810:2326:13
10:49
+0:39
30K
18.64 mi14:38:343:16:2110:3235:03
11:17
+0:28
20M
20.00 mi14:53:183:31:0510:3314:44
10:51
-0:26
21M
21.00 mi15:05:223:43:0910:3812:04
12:04
+1:13
35K
21.75 mi15:14:413:52:2810:419:19
12:27
+0:23
23M
23.00 mi15:31:154:09:0210:5016:34
13:14
+0:47
24M
24.00 mi15:42:434:20:3010:5111:28
11:28
-1:46
40K
24.85 mi15:53:414:31:2810:5510:58
12:50
+1:22
25.2M
25.20 mi15:58:224:36:0910:584:41
13:35
+0:45
Finish
26.22 mi16:10:004:47:4710:5911:38
11:25
-2:10

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

10:10 /mi

Average Pace

10:59 /mi

Slowest Pace

13:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:05

47% of race

Time at Steady Pace

1:39:06

34% of race

Time at Slower Pace

53:36

19% of race

Average Pace: 10:59 /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 mi11:54:1332:0010:1832:00
10:18
#26293
10K
6.21 mi12:26:181:04:0510:1932:05
10:20
#26107
15K
9.32 mi12:58:221:36:0910:1932:04
10:19
#25942
20K
12.43 mi13:30:222:08:0910:1932:00
10:18
#25633
Half
13.11 mi13:37:182:15:0510:186:56
10:10
#25612
25K
15.53 mi14:03:312:41:1810:2326:13
10:49
#25477
30K
18.64 mi14:38:343:16:2110:3235:03
11:17
#25299
20M
20.00 mi14:53:183:31:0510:3314:44
10:51
#25159
21M
21.00 mi15:05:223:43:0910:3812:04
12:04
#25090
35K
21.75 mi15:14:413:52:2810:419:19
12:27
#25166
23M
23.00 mi15:31:154:09:0210:5016:34
13:14
#25273
24M
24.00 mi15:42:434:20:3010:5111:28
11:28
#25260
40K
24.85 mi15:53:414:31:2810:5510:58
12:50
#25296
25.2M
25.20 mi15:58:224:36:0910:584:41
13:35
#25304
Finish
26.22 mi16:10:004:47:4710:5911:38
11:25
#25349
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26293109191091925629(Top 90%)10578(Top 87%)10578(Top 193%)
10K6.21 mi3.10 mi26107+18610830+8910830+8925958(Top 91%)10766(Top 88%)10766(Top 197%)
15K9.32 mi3.11 mi25942+16510744+8610744+8625629(Top 90%)10578(Top 87%)10578(Top 193%)
20K12.43 mi3.11 mi25633+30910583+16110583+16124823(Top 87%)10165(Top 83%)10165(Top 186%)
Half13.11 mi0.68 mi25612+2110568+1510568+1525151(Top 89%)10350(Top 85%)10350(Top 189%)
25K15.53 mi2.42 mi25477+13510510+5810510+5824931(Top 88%)10249(Top 84%)10249(Top 187%)
30K18.64 mi3.11 mi25299+17810448+6210448+6224508(Top 86%)10136(Top 83%)10136(Top 185%)
20M20.00 mi1.36 mi25159+14010384+6410384+6423253(Top 82%)9561(Top 78%)9561(Top 175%)
21M21.00 mi1.00 mi25090+6910355+2910355+2923700(Top 83%)9869(Top 81%)9869(Top 180%)
35K21.75 mi0.75 mi25166-7610410-5510410-5526395(Top 93%)11279(Top 92%)11279(Top 206%)
23M23.00 mi1.25 mi25273-10710478-6810478-6826638(Top 94%)11420(Top 93%)11420(Top 209%)
24M24.00 mi1.00 mi25260+1310487-910487-924827(Top 87%)10550(Top 86%)10550(Top 193%)
40K24.85 mi0.85 mi25296-3610511-2410511-2426093(Top 92%)11183(Top 91%)11183(Top 204%)
25.2M25.20 mi0.35 mi25304-810519-810519-825747(Top 91%)11064(Top 90%)11064(Top 202%)
Finish26.22 mi1.02 mi25349-4510547-2810547-2826008(Top 92%)11150(Top 91%)11150(Top 204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25629

Females

10578

F18-39

10578

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

25958

Females

10766

F18-39

10766

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25629

Females

10578

F18-39

10578

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

24823

Females

10165

F18-39

10165

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25151

Females

10350

F18-39

10350

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

24931

Females

10249

F18-39

10249

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

24508

Females

10136

F18-39

10136

30K→20M

18.6 - 20.0 mi

Top 82%
×5stories
+64ft-50ft

Overall

23253

Females

9561

F18-39

9561

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

23700

Females

9869

F18-39

9869

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26395

Females

11279

F18-39

11279

35K→23M

21.8 - 23.0 mi

Top 94%
×5stories
+23ft-63ft

Overall

26638

Females

11420

F18-39

11420

23M→24M

23.0 - 24.0 mi

Top 87%
×6stories
+12ft-82ft

Overall

24827

Females

10550

F18-39

10550

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26093

Females

11183

F18-39

11183

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25747

Females

11064

F18-39

11064

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

26008

Females

11150

F18-39

11150

Passing Analysis

Category:
Athletes Passed
1564
Passed By
620
Net Change
+944
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26293
5K → 10K26579+186#26293#26107
10K → 15K20944+165#26107#25942
15K → 20K3134+309#25942#25633
20K → Half287+21#25633#25612
Half → 25K17540+135#25612#25477
25K → 30K22749+178#25477#25299
30K → 20M1433+140#25299#25159
20M → 21M9324+69#25159#25090
21M → 35K884-76#25090#25166
35K → 23M12119-107#25166#25273
23M → 24M5037+13#25273#25260
24M → 40K1551-36#25260#25296
40K → 25.2M1220-8#25296#25304
25.2M → Finish1459-45#25304#25349
TOTALS1564620+944
📊

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