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BOSTON MARATHON 2023

Karen Kroboth

Bib: 31655•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
12:27/mi
38:41
↑ 97↓ 3451.5%
10K· 6.21 mi
12:33/mi
1:17:40
↑ 79↓ 1380.4%
15K· 9.32 mi
12:35/mi
1:56:47
↑ 67↓ 78
20K· 12.43 mi
12:55/mi
2:36:54
↑ 106↓ 860.1%
Half· 13.11 mi
12:28/mi
2:45:24
↑ 19↓ 370.5%
25K· 15.53 mi
13:09/mi
3:17:17
↑ 66↓ 880.2%
30K· 18.64 mi
13:19/mi
3:58:38
↑ 181↓ 1480.2%
20M
13:22/mi
4:16:48
↑ 64↓ 500.2%
21M
15:59/mi
4:32:47
↑ 106↓ 241.6%
35K· 21.75 mi
13:27/mi
4:42:51
↑ 17↓ 861.7%
23M
14:22/mi
5:00:50
↑ 23↓ 630.6%
24M
14:09/mi
5:14:59
↓ 821.3%
40K· 24.85 mi
14:30/mi
5:27:23
↓ 200.3%
25.2M
16:11/mi
5:32:58
↑ 13↓ 160.2%
Finish· 26.22 mi
13:53/mi
5:47:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:45:24
Pace12:37 /mi
2nd Half
Distance13.11 mi
Time3:01:43
Pace13:52 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:1038:4112:2738:41
12:27
-
10K
6.21 mi12:37:091:17:4012:3038:59
12:33
+0:06
15K
9.32 mi13:16:161:56:4712:3239:07
12:35
+0:02
20K
12.43 mi13:56:232:36:5412:3840:07
12:55
+0:20
Half
13.11 mi14:04:532:45:2412:378:30
12:28
-0:27
25K
15.53 mi14:36:463:17:1712:4231:53
13:09
+0:41
30K
18.64 mi15:18:073:58:3812:4841:21
13:19
+0:10
20M
20.00 mi15:36:174:16:4812:5018:10
13:22
+0:03
21M
21.00 mi15:52:164:32:4712:5915:59
15:59
+2:37
35K
21.75 mi16:02:204:42:5113:0010:04
13:27
-2:32
23M
23.00 mi16:20:195:00:5013:0517:59
14:22
+0:55
24M
24.00 mi16:34:285:14:5913:0714:09
14:09
-0:13
40K
24.85 mi16:46:525:27:2313:1012:24
14:30
+0:21
25.2M
25.20 mi16:52:275:32:5813:135:35
16:11
+1:41
Finish
26.22 mi17:06:365:47:0713:1514:09
13:53
-2:18

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

12:27 /mi

Average Pace

13:15 /mi

Slowest Pace

16:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:17

36% of race

Time at Steady Pace

2:35:44

45% of race

Time at Slower Pace

1:06:06

19% of race

Average Pace: 13:14 /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 mi11:58:1038:4112:2738:41
12:27
#26535
10K
6.21 mi12:37:091:17:4012:3038:59
12:33
#26516
15K
9.32 mi13:16:161:56:4712:3239:07
12:35
#26503
20K
12.43 mi13:56:232:36:5412:3840:07
12:55
#26453
Half
13.11 mi14:04:532:45:2412:378:30
12:28
#26445
25K
15.53 mi14:36:463:17:1712:4231:53
13:09
#26389
30K
18.64 mi15:18:073:58:3812:4841:21
13:19
#26305
20M
20.00 mi15:36:174:16:4812:5018:10
13:22
#26256
21M
21.00 mi15:52:164:32:4712:5915:59
15:59
#26272
35K
21.75 mi16:02:204:42:5113:0010:04
13:27
#26257
23M
23.00 mi16:20:195:00:5013:0517:59
14:22
#26256
24M
24.00 mi16:34:285:14:5913:0714:09
14:09
#26268
40K
24.85 mi16:46:525:27:2313:1012:24
14:30
#26269
25.2M
25.20 mi16:52:275:32:5813:135:35
16:11
#26277
Finish
26.22 mi17:06:365:47:0713:1514:09
13:53
#26293
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi26535113811138126353(Top 99%)11271(Top 99%)11271(Top 934%)
10K6.21 mi3.10 mi26516+1911373+811373+826483(Top 99%)11352(Top 99%)11352(Top 941%)
15K9.32 mi3.11 mi26503+1311363+1011363+1026353(Top 99%)11271(Top 99%)11271(Top 934%)
20K12.43 mi3.11 mi26453+5011327+3611327+3626191(Top 98%)11168(Top 98%)11168(Top 925%)
Half13.11 mi0.68 mi26445+811324+311324+326138(Top 98%)11144(Top 98%)11144(Top 923%)
25K15.53 mi2.42 mi26389+5611282+4211282+4225952(Top 97%)11053(Top 97%)11053(Top 916%)
30K18.64 mi3.11 mi26305+8411228+5411228+5425646(Top 96%)10920(Top 96%)10920(Top 905%)
20M20.00 mi1.36 mi26256+4911206+2211206+2225456(Top 96%)10833(Top 95%)10833(Top 898%)
21M21.00 mi1.00 mi26272-1611219-1311219-1326220(Top 98%)11231(Top 98%)11231(Top 930%)
35K21.75 mi0.75 mi26257+1511214+511214+525867(Top 97%)11074(Top 97%)11074(Top 917%)
23M23.00 mi1.25 mi26256+111218-411218-426046(Top 98%)11159(Top 98%)11159(Top 925%)
24M24.00 mi1.00 mi26268-1211227-911227-926133(Top 98%)11225(Top 98%)11225(Top 930%)
40K24.85 mi0.85 mi26269-111226+111226+125955(Top 97%)11153(Top 98%)11153(Top 924%)
25.2M25.20 mi0.35 mi26277-811232-611232-626175(Top 98%)11245(Top 98%)11245(Top 932%)
Finish26.22 mi1.02 mi26293-1611240-811240-826327(Top 99%)11321(Top 99%)11321(Top 938%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21story building
+97ft-345ft

Overall

26353

Females

11271

F50-54

11271

5K→10K

3.1 - 6.2 mi

Top 99%
×5story building
+79ft-138ft

Overall

26483

Females

11352

F50-54

11352

10K→15K

6.2 - 9.3 mi

Top 99%
×3story building
+67ft-78ft

Overall

26353

Females

11271

F50-54

11271

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

26191

Females

11168

F50-54

11168

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

26138

Females

11144

F50-54

11144

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

25952

Females

11053

F50-54

11053

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

25646

Females

10920

F50-54

10920

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

25456

Females

10833

F50-54

10833

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

26220

Females

11231

F50-54

11231

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

25867

Females

11074

F50-54

11074

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

26046

Females

11159

F50-54

11159

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

26133

Females

11225

F50-54

11225

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25955

Females

11153

F50-54

11153

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

26175

Females

11245

F50-54

11245

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

26327

Females

11321

F50-54

11321

Passing Analysis

Category:
Athletes Passed
391
Passed By
149
Net Change
+242
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26535
5K → 10K2910+19#26535#26516
10K → 15K2714+13#26516#26503
15K → 20K555+50#26503#26453
20K → Half102+8#26453#26445
Half → 25K626+56#26445#26389
25K → 30K873+84#26389#26305
30K → 20M501+49#26305#26256
20M → 21M1228-16#26256#26272
21M → 35K216+15#26272#26257
35K → 23M1716+1#26257#26256
23M → 24M618-12#26256#26268
24M → 40K910-1#26268#26269
40K → 25.2M311-8#26269#26277
25.2M → Finish319-16#26277#26293
TOTALS391149+242
📊

Passing Visuals

Category:
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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