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BOSTON MARATHON 2023

Katie Karim

Bib: 15688•F

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0:00
0:00
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 40%
Division (F18-39)
#0 / 4884
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
8:02/mi
24:56
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
49:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:13:28
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:37:57
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:43:17
↑ 19↓ 370.5%
25K· 15.53 mi
8:16/mi
2:03:19
↑ 66↓ 880.2%
30K· 18.64 mi
8:41/mi
2:30:18
↑ 181↓ 1480.2%
20M
9:02/mi
2:42:35
↑ 64↓ 500.2%
21M
10:40/mi
2:53:15
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:59:17
↑ 17↓ 861.7%
23M
8:58/mi
3:10:31
↑ 23↓ 630.6%
24M
8:55/mi
3:19:26
↓ 821.3%
40K· 24.85 mi
8:23/mi
3:26:36
↓ 200.3%
25.2M
9:46/mi
3:29:58
↑ 13↓ 160.2%
Finish· 26.22 mi
7:55/mi
3:38:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:17
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:54:45
Pace8:45 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3924:568:0224:56
8:02
-
10K
6.21 mi11:18:5949:167:5624:20
7:50
-0:12
15K
9.32 mi11:43:111:13:287:5324:12
7:47
-0:03
20K
12.43 mi12:07:401:37:577:5324:29
7:53
+0:06
Half
13.11 mi12:13:001:43:177:535:20
7:49
-0:04
25K
15.53 mi12:33:022:03:197:5620:02
8:16
+0:27
30K
18.64 mi13:00:012:30:188:0426:59
8:41
+0:25
20M
20.00 mi13:12:182:42:358:0812:17
9:02
+0:21
21M
21.00 mi13:22:582:53:158:1510:40
10:40
+1:38
35K
21.75 mi13:29:002:59:178:156:02
8:04
-2:36
23M
23.00 mi13:40:143:10:318:1711:14
8:58
+0:54
24M
24.00 mi13:49:093:19:268:198:55
8:55
-0:03
40K
24.85 mi13:56:193:26:368:197:10
8:23
-0:32
25.2M
25.20 mi13:59:413:29:588:203:22
9:46
+1:23
Finish
26.22 mi14:07:453:38:028:198:04
7:55
-1:51

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

7:47 /mi

Average Pace

8:19 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

53:52

25% of race

Time at Steady Pace

1:30:43

42% of race

Time at Slower Pace

1:13:27

34% of race

Average Pace: 8:19 /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 mi10:54:3924:568:0224:56
8:02
#14209
10K
6.21 mi11:18:5949:167:5624:20
7:50
#13818
15K
9.32 mi11:43:111:13:287:5324:12
7:47
#13437
20K
12.43 mi12:07:401:37:577:5324:29
7:53
#13150
Half
13.11 mi12:13:001:43:177:535:20
7:49
#13121
25K
15.53 mi12:33:022:03:197:5620:02
8:16
#13374
30K
18.64 mi13:00:012:30:188:0426:59
8:41
#13792
20M
20.00 mi13:12:182:42:358:0812:17
9:02
#14071
21M
21.00 mi13:22:582:53:158:1510:40
10:40
#14551
35K
21.75 mi13:29:002:59:178:156:02
8:04
#14488
23M
23.00 mi13:40:143:10:318:1711:14
8:58
#14556
24M
24.00 mi13:49:093:19:268:198:55
8:55
#14647
40K
24.85 mi13:56:193:26:368:197:10
8:23
#14546
25.2M
25.20 mi13:59:413:29:588:203:22
9:46
#14573
Finish
26.22 mi14:07:453:38:028:198:04
7:55
#14437
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi142094157415712665(Top 48%)3276(Top 29%)3276(Top 67%)
10K6.21 mi3.10 mi13818+3913934+2233934+22313426(Top 50%)3676(Top 32%)3676(Top 75%)
15K9.32 mi3.11 mi13437+3813717+2173717+21712665(Top 48%)3276(Top 29%)3276(Top 67%)
20K12.43 mi3.11 mi13150+2873580+1373580+13712475(Top 47%)3249(Top 28%)3249(Top 67%)
Half13.11 mi0.68 mi13121+293557+233557+2312975(Top 49%)3504(Top 31%)3504(Top 72%)
25K15.53 mi2.42 mi13374-2533730-1733730-17314702(Top 55%)4648(Top 41%)4648(Top 95%)
30K18.64 mi3.11 mi13792-4184015-2854015-28515433(Top 58%)5183(Top 45%)5183(Top 106%)
20M20.00 mi1.36 mi14071-2794213-1984213-19816748(Top 63%)5999(Top 53%)5999(Top 123%)
21M21.00 mi1.00 mi14551-4804525-3124525-31220061(Top 75%)7959(Top 70%)7959(Top 163%)
35K21.75 mi0.75 mi14488+634501+244501+2412634(Top 47%)3795(Top 33%)3795(Top 78%)
23M23.00 mi1.25 mi14556-684560-594560-5915917(Top 60%)5687(Top 50%)5687(Top 116%)
24M24.00 mi1.00 mi14647-914649-894649-8916849(Top 63%)6264(Top 55%)6264(Top 128%)
40K24.85 mi0.85 mi14546+1014604+454604+4512627(Top 47%)4019(Top 35%)4019(Top 82%)
25.2M25.20 mi0.35 mi14573-274633-294633-2916387(Top 62%)6081(Top 53%)6081(Top 125%)
Finish26.22 mi1.02 mi14437+1364564+694564+6911553(Top 43%)3483(Top 30%)3483(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12665

Females

3276

F18-39

3276

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13426

Females

3676

F18-39

3676

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12665

Females

3276

F18-39

3276

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12475

Females

3249

F18-39

3249

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

12975

Females

3504

F18-39

3504

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14702

Females

4648

F18-39

4648

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15433

Females

5183

F18-39

5183

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

16748

Females

5999

F18-39

5999

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

20061

Females

7959

F18-39

7959

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12634

Females

3795

F18-39

3795

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15917

Females

5687

F18-39

5687

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16849

Females

6264

F18-39

6264

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12627

Females

4019

F18-39

4019

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16387

Females

6081

F18-39

6081

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

11553

Females

3483

F18-39

3483

Passing Analysis

Category:
Athletes Passed
2050
Passed By
2278
Net Change
-228
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14209
5K → 10K539148+391#14209#13818
10K → 15K43958+381#13818#13437
15K → 20K34558+287#13437#13150
20K → Half5223+29#13150#13121
Half → 25K82335-253#13121#13374
25K → 30K76494-418#13374#13792
30K → 20M37316-279#13792#14071
20M → 21M10490-480#14071#14551
21M → 35K8118+63#14551#14488
35K → 23M59127-68#14488#14556
23M → 24M55146-91#14556#14647
24M → 40K1109+101#14647#14546
40K → 25.2M2047-27#14546#14573
25.2M → Finish1459+136#14573#14437
TOTALS20502278-228
📊

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