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BOSTON MARATHON 2025

Karen Kroboth

Bib: 28528•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
34:23
Rank: #27622
Start → 5K
34:23 | 11:04/mi
10K· 6.21 mi
1:09:08
Rank: #27453 (+169)
5K → 10K
34:45 | 11:11/mi
15K· 9.32 mi
1:43:52
Rank: #27247 (+206)
10K → 15K
34:44 | 11:11/mi
20K· 12.43 mi
2:20:16
Rank: #27139 (+108)
15K → 20K
36:24 | 11:43/mi
Half· 13.11 mi
2:28:38
Rank: #27191 (-52)
20K → Half
8:22 | 12:16/mi
25K· 15.53 mi
3:00:11
Rank: #27208 (-17)
Half → 25K
31:33 | 13:01/mi
30K· 18.64 mi
3:39:12
Rank: #27074 (+134)
25K → 30K
39:01 | 12:33/mi
20M
3:57:12
Rank: #27048 (+26)
30K → 20M
18:00 | 13:15/mi
21M
4:12:15
Rank: #27081 (-33)
20M → 21M
15:03 | 15:03/mi
35K· 21.75 mi
4:22:14
Rank: #27085 (-4)
21M → 35K
9:59 | 13:21/mi
23M
4:38:15
Rank: #27068 (+17)
35K → 23M
16:01 | 12:48/mi
24M
4:50:47
Rank: #27042 (+26)
23M → 24M
12:32 | 12:33/mi
40K· 24.85 mi
5:01:31
Rank: #27007 (+35)
24M → 40K
10:44 | 12:33/mi
25.2M
5:06:46
Rank: #27016 (-9)
40K → 25.2M
5:15 | 15:13/mi
Finish· 26.22 mi
5:20:04
Rank: #27065 (-49)
25.2M → Finish
13:18 | 13:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:28:38
Pace11:20 /mi
2nd Half
Distance13.11 mi
Time2:51:26
Pace13:05 /mi
📊Positive Split: 15.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:3834:2311:0434:23
11:04
-
10K
6.21 mi12:29:231:09:0811:0834:45
11:11
+0:07
15K
9.32 mi13:04:071:43:5211:0934:44
11:11
0:00
20K
12.43 mi13:40:312:20:1611:1736:24
11:43
+0:32
Half
13.11 mi13:48:532:28:3811:208:22
12:16
+0:33
25K
15.53 mi14:20:263:00:1111:3631:33
13:01
+0:45
30K
18.64 mi14:59:273:39:1211:4639:01
12:33
-0:28
20M
20.00 mi15:17:273:57:1211:5218:00
13:15
+0:42
21M
21.00 mi15:32:304:12:1512:0115:03
15:03
+1:48
35K
21.75 mi15:42:294:22:1412:039:59
13:21
-1:42
23M
23.00 mi15:58:304:38:1512:0616:01
12:48
-0:33
24M
24.00 mi16:11:024:50:4712:0712:32
12:33
-0:15
40K
24.85 mi16:21:465:01:3112:0810:44
12:33
0:00
25.2M
25.20 mi16:27:015:06:4612:105:15
15:13
+2:40
Finish
26.22 mi16:40:195:20:0412:1313:18
13:03
-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

11:04 /mi

Average Pace

12:13 /mi

Slowest Pace

15:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:16

44% of race

Time at Steady Pace

2:11:31

41% of race

Time at Slower Pace

48:17

15% of race

Average Pace: 12:12 /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 mi11:54:3834:2311:0434:23
11:04
#27622
10K
6.21 mi12:29:231:09:0811:0834:45
11:11
#27453
15K
9.32 mi13:04:071:43:5211:0934:44
11:11
#27247
20K
12.43 mi13:40:312:20:1611:1736:24
11:43
#27139
Half
13.11 mi13:48:532:28:3811:208:22
12:16
#27191
25K
15.53 mi14:20:263:00:1111:3631:33
13:01
#27208
30K
18.64 mi14:59:273:39:1211:4639:01
12:33
#27074
20M
20.00 mi15:17:273:57:1211:5218:00
13:15
#27048
21M
21.00 mi15:32:304:12:1512:0115:03
15:03
#27081
35K
21.75 mi15:42:294:22:1412:039:59
13:21
#27085
23M
23.00 mi15:58:304:38:1512:0616:01
12:48
#27068
24M
24.00 mi16:11:024:50:4712:0712:32
12:33
#27042
40K
24.85 mi16:21:465:01:3112:0810:44
12:33
#27007
25.2M
25.20 mi16:27:015:06:4612:105:15
15:13
#27016
Finish
26.22 mi16:40:195:20:0412:1313:18
13:03
#27065
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi27622117181171826899(Top 95%)11319(Top 93%)11319(Top 869%)
10K6.21 mi3.10 mi27453+16911617+10111617+10127285(Top 96%)11539(Top 94%)11539(Top 886%)
15K9.32 mi3.11 mi27247+20611498+11911498+11926899(Top 95%)11319(Top 93%)11319(Top 869%)
20K12.43 mi3.11 mi27139+10811447+5111447+5126855(Top 95%)11305(Top 92%)11305(Top 868%)
Half13.11 mi0.68 mi27191-5211481-3411481-3427633(Top 97%)11787(Top 96%)11787(Top 905%)
25K15.53 mi2.42 mi27208-1711502-2111502-2127305(Top 96%)11598(Top 95%)11598(Top 890%)
30K18.64 mi3.11 mi27074+13411438+6411438+6426238(Top 92%)11086(Top 91%)11086(Top 851%)
20M20.00 mi1.36 mi27048+2611431+711431+726676(Top 94%)11387(Top 93%)11387(Top 874%)
21M21.00 mi1.00 mi27081-3311464-3311464-3327184(Top 96%)11664(Top 95%)11664(Top 895%)
35K21.75 mi0.75 mi27085-411467-311467-327245(Top 96%)11717(Top 96%)11717(Top 899%)
23M23.00 mi1.25 mi27068+1711465+211465+226135(Top 92%)11162(Top 91%)11162(Top 857%)
24M24.00 mi1.00 mi27042+2611461+411461+426352(Top 93%)11295(Top 92%)11295(Top 867%)
40K24.85 mi0.85 mi27007+3511443+1811443+1825716(Top 91%)11001(Top 90%)11001(Top 844%)
25.2M25.20 mi0.35 mi27016-911454-1111454-1127262(Top 96%)11784(Top 96%)11784(Top 904%)
Finish26.22 mi1.02 mi27065-4911489-3511489-3527647(Top 97%)11929(Top 98%)11929(Top 916%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

26899

Females

11319

F50-54

11319

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27285

Females

11539

F50-54

11539

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

26899

Females

11319

F50-54

11319

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

26855

Females

11305

F50-54

11305

20K→Half

12.4 - 13.1 mi

Top 97%
×2stories
+19ft-37ft

Overall

27633

Females

11787

F50-54

11787

Half→25K

13.1 - 15.5 mi

Top 96%
×4stories
+66ft-88ft

Overall

27305

Females

11598

F50-54

11598

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

26238

Females

11086

F50-54

11086

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

26676

Females

11387

F50-54

11387

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

27184

Females

11664

F50-54

11664

21M→35K

21.0 - 21.8 mi

Top 96%
×7stories
+17ft-86ft

Overall

27245

Females

11717

F50-54

11717

35K→23M

21.8 - 23.0 mi

Top 92%
×5stories
+23ft-63ft

Overall

26135

Females

11162

F50-54

11162

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

26352

Females

11295

F50-54

11295

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25716

Females

11001

F50-54

11001

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27262

Females

11784

F50-54

11784

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2stories
+22ft-21ft

Overall

27647

Females

11929

F50-54

11929

Passing Analysis

Category:
Athletes Passed
1005
Passed By
448
Net Change
+557
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27622
5K → 10K20637+169#27622#27453
10K → 15K22721+206#27453#27247
15K → 20K14739+108#27247#27139
20K → Half961-52#27139#27191
Half → 25K6784-17#27191#27208
25K → 30K15218+134#27208#27074
30K → 20M4418+26#27074#27048
20M → 21M1649-33#27048#27081
21M → 35K1418-4#27081#27085
35K → 23M3316+17#27085#27068
23M → 24M359+26#27068#27042
24M → 40K405+35#27042#27007
40K → 25.2M716-9#27007#27016
25.2M → Finish857-49#27016#27065
TOTALS1005448+557
📊

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