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BOSTON MARATHON 2024

Katherine Ko

Bib: 27834•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
9:31/mi
29:34
↑ 97↓ 3451.5%
10K· 6.21 mi
9:35/mi
59:21
↑ 79↓ 1380.4%
15K· 9.32 mi
9:51/mi
1:29:56
↑ 67↓ 78
20K· 12.43 mi
9:57/mi
2:00:51
↑ 106↓ 860.1%
Half· 13.11 mi
9:27/mi
2:07:18
↑ 19↓ 370.5%
25K· 15.53 mi
10:08/mi
2:31:53
↑ 66↓ 880.2%
30K· 18.64 mi
10:02/mi
3:03:02
↑ 181↓ 1480.2%
20M
10:05/mi
3:16:44
↑ 64↓ 500.2%
21M
10:30/mi
3:27:14
↑ 106↓ 241.6%
35K· 21.75 mi
9:25/mi
3:34:17
↑ 17↓ 861.7%
23M
10:09/mi
3:47:00
↑ 23↓ 630.6%
24M
9:41/mi
3:56:41
↓ 821.3%
40K· 24.85 mi
9:47/mi
4:05:03
↓ 200.3%
25.2M
10:00/mi
4:08:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:28/mi
4:17:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:18
Pace9:43 /mi
2nd Half
Distance13.11 mi
Time2:09:50
Pace9:54 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5329:349:3129:34
9:31
-
10K
6.21 mi12:21:4059:219:3329:47
9:35
+0:04
15K
9.32 mi12:52:151:29:569:3930:35
9:51
+0:16
20K
12.43 mi13:23:102:00:519:4330:55
9:57
+0:06
Half
13.11 mi13:29:372:07:189:436:27
9:27
-0:30
25K
15.53 mi13:54:122:31:539:4724:35
10:08
+0:41
30K
18.64 mi14:25:213:03:029:4931:09
10:02
-0:06
20M
20.00 mi14:39:033:16:449:5013:42
10:05
+0:03
21M
21.00 mi14:49:333:27:149:5210:30
10:30
+0:25
35K
21.75 mi14:56:363:34:179:517:03
9:25
-1:05
23M
23.00 mi15:09:193:47:009:5212:43
10:09
+0:44
24M
24.00 mi15:19:003:56:419:529:41
9:41
-0:28
40K
24.85 mi15:27:224:05:039:528:22
9:47
+0:06
25.2M
25.20 mi15:30:494:08:309:523:27
10:00
+0:13
Finish
26.22 mi15:39:274:17:089:498:38
8:28
-1:32

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

8:28 /mi

Average Pace

9:49 /mi

Slowest Pace

10:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:29

32% of race

Time at Steady Pace

1:54:09

44% of race

Time at Slower Pace

1:01:30

24% of race

Average Pace: 9:48 /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 mi11:51:5329:349:3129:34
9:31
#21785
10K
6.21 mi12:21:4059:219:3329:47
9:35
#21689
15K
9.32 mi12:52:151:29:569:3930:35
9:51
#21635
20K
12.43 mi13:23:102:00:519:4330:55
9:57
#21258
Half
13.11 mi13:29:372:07:189:436:27
9:27
#21198
25K
15.53 mi13:54:122:31:539:4724:35
10:08
#20903
30K
18.64 mi14:25:213:03:029:4931:09
10:02
#20290
20M
20.00 mi14:39:033:16:449:5013:42
10:05
#20027
21M
21.00 mi14:49:333:27:149:5210:30
10:30
#19734
35K
21.75 mi14:56:363:34:179:517:03
9:25
#19556
23M
23.00 mi15:09:193:47:009:5212:43
10:09
#19348
24M
24.00 mi15:19:003:56:419:529:41
9:41
#19167
40K
24.85 mi15:27:224:05:039:528:22
9:47
#18960
25.2M
25.20 mi15:30:494:08:309:523:27
10:00
#18856
Finish
26.22 mi15:39:274:17:089:498:38
8:28
#18631
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi217858802880221538(Top 84%)8619(Top 79%)8619(Top 185%)
10K6.21 mi3.10 mi21689+968748+548748+5421596(Top 85%)8701(Top 80%)8701(Top 187%)
15K9.32 mi3.11 mi21635+548704+448704+4421538(Top 84%)8619(Top 79%)8619(Top 185%)
20K12.43 mi3.11 mi21258+3778494+2108494+21020459(Top 80%)8066(Top 74%)8066(Top 173%)
Half13.11 mi0.68 mi21198+608457+378457+3719932(Top 78%)7836(Top 72%)7836(Top 168%)
25K15.53 mi2.42 mi20903+2958329+1288329+12819479(Top 76%)7636(Top 70%)7636(Top 164%)
30K18.64 mi3.11 mi20290+6138047+2828047+28217442(Top 68%)6758(Top 62%)6758(Top 145%)
20M20.00 mi1.36 mi20027+2637936+1117936+11116772(Top 66%)6599(Top 60%)6599(Top 142%)
21M21.00 mi1.00 mi19734+2937808+1287808+12814852(Top 58%)5758(Top 53%)5758(Top 124%)
35K21.75 mi0.75 mi19556+1787738+707738+7015250(Top 60%)5974(Top 55%)5974(Top 128%)
23M23.00 mi1.25 mi19348+2087648+907648+9016003(Top 63%)6401(Top 59%)6401(Top 137%)
24M24.00 mi1.00 mi19167+1817568+807568+8015234(Top 60%)6076(Top 56%)6076(Top 130%)
40K24.85 mi0.85 mi18960+2077481+877481+8714242(Top 56%)5651(Top 52%)5651(Top 121%)
25.2M25.20 mi0.35 mi18856+1047431+507431+5011051(Top 43%)4149(Top 38%)4149(Top 89%)
Finish26.22 mi1.02 mi18631+2257352+797352+7911396(Top 45%)4183(Top 38%)4183(Top 90%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

21538

Females

8619

F18-39

8619

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

21596

Females

8701

F18-39

8701

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

21538

Females

8619

F18-39

8619

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

20459

Females

8066

F18-39

8066

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

19932

Females

7836

F18-39

7836

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

19479

Females

7636

F18-39

7636

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

17442

Females

6758

F18-39

6758

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

16772

Females

6599

F18-39

6599

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

14852

Females

5758

F18-39

5758

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

15250

Females

5974

F18-39

5974

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16003

Females

6401

F18-39

6401

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15234

Females

6076

F18-39

6076

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14242

Females

5651

F18-39

5651

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11051

Females

4149

F18-39

4149

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

11396

Females

4183

F18-39

4183

Passing Analysis

Category:
Athletes Passed
3589
Passed By
435
Net Change
+3154
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21785
5K → 10K274178+96#21785#21689
10K → 15K211157+54#21689#21635
15K → 20K41538+377#21635#21258
20K → Half677+60#21258#21198
Half → 25K32126+295#21198#20903
25K → 30K6163+613#20903#20290
30K → 20M2674+263#20290#20027
20M → 21M2952+293#20027#19734
21M → 35K1802+178#19734#19556
35K → 23M21911+208#19556#19348
23M → 24M1854+181#19348#19167
24M → 40K2092+207#19167#18960
40K → 25.2M1040+104#18960#18856
25.2M → Finish2261+225#18856#18631
TOTALS3589435+3154
📊

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