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BOSTON MARATHON 2024

Kelsey Karkos

Bib: 7690•F

CO

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 33%
Gender (Female)
#0 / 10924
Top 18%
Division (F18-39)
#0 / 4660
Top 31%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #8921
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
44:20
Rank: #7679 (+1242)
5K → 10K
21:46 | 7:00/mi
15K· 9.32 mi
1:06:25
Rank: #7371 (+308)
10K → 15K
22:05 | 7:06/mi
20K· 12.43 mi
1:30:16
Rank: #7870 (-499)
15K → 20K
23:51 | 7:41/mi
Half· 13.11 mi
1:35:03
Rank: #7743 (+127)
20K → Half
4:47 | 7:01/mi
25K· 15.53 mi
1:54:41
Rank: #8199 (-456)
Half → 25K
19:38 | 8:06/mi
30K· 18.64 mi
2:21:08
Rank: #8632 (-433)
25K → 30K
26:27 | 8:31/mi
20M
2:32:10
Rank: #8487 (+145)
30K → 20M
11:02 | 8:07/mi
21M
2:41:59
Rank: #8670 (-183)
20M → 21M
9:49 | 9:49/mi
35K· 21.75 mi
2:47:44
Rank: #8509 (+161)
21M → 35K
5:45 | 7:41/mi
23M
2:58:09
Rank: #8351 (+158)
35K → 23M
10:25 | 8:19/mi
24M
3:07:01
Rank: #8463 (-112)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:14:32
Rank: #8473 (-10)
24M → 40K
7:31 | 8:47/mi
25.2M
3:17:43
Rank: #8421 (+52)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:26:14
Rank: #8469 (-48)
25.2M → Finish
8:31 | 8:21/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:03
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:51:11
Pace8:29 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:0722:347:1622:34
7:16
-
10K
6.21 mi11:34:5344:207:0821:46
7:00
-0:16
15K
9.32 mi11:56:581:06:257:0822:05
7:06
+0:06
20K
12.43 mi12:20:491:30:167:1623:51
7:41
+0:35
Half
13.11 mi12:25:361:35:037:154:47
7:01
-0:40
25K
15.53 mi12:45:141:54:417:2319:38
8:06
+1:05
30K
18.64 mi13:11:412:21:087:3426:27
8:31
+0:25
20M
20.00 mi13:22:432:32:107:3611:02
8:07
-0:24
21M
21.00 mi13:32:322:41:597:439:49
9:49
+1:42
35K
21.75 mi13:38:172:47:447:435:45
7:41
-2:08
23M
23.00 mi13:48:422:58:097:4510:25
8:19
+0:38
24M
24.00 mi13:57:343:07:017:488:52
8:52
+0:33
40K
24.85 mi14:05:053:14:327:507:31
8:47
-0:05
25.2M
25.20 mi14:08:163:17:437:513:11
9:14
+0:27
Finish
26.22 mi14:16:473:26:147:528:31
8:21
-0:53

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

7:00 /mi

Average Pace

7:52 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:40:48

49% of race

Time at Steady Pace

1:16:03

37% of race

Time at Slower Pace

29:23

14% of race

Average Pace: 7:52 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:13:0722:347:1622:34
7:16
#8921
10K
6.21 mi11:34:5344:207:0821:46
7:00
#7679
15K
9.32 mi11:56:581:06:257:0822:05
7:06
#7371
20K
12.43 mi12:20:491:30:167:1623:51
7:41
#7870
Half
13.11 mi12:25:361:35:037:154:47
7:01
#7743
25K
15.53 mi12:45:141:54:417:2319:38
8:06
#8199
30K
18.64 mi13:11:412:21:087:3426:27
8:31
#8632
20M
20.00 mi13:22:432:32:107:3611:02
8:07
#8487
21M
21.00 mi13:32:322:41:597:439:49
9:49
#8670
35K
21.75 mi13:38:172:47:447:435:45
7:41
#8509
23M
23.00 mi13:48:422:58:097:4510:25
8:19
#8351
24M
24.00 mi13:57:343:07:017:488:52
8:52
#8463
40K
24.85 mi14:05:053:14:327:507:31
8:47
#8473
25.2M
25.20 mi14:08:163:17:437:513:11
9:14
#8421
Finish
26.22 mi14:16:473:26:147:528:31
8:21
#8469
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8921154915496851(Top 27%)871(Top 8%)871(Top 19%)
10K6.21 mi3.10 mi7679+12421079+4701079+4706710(Top 26%)781(Top 7%)781(Top 17%)
15K9.32 mi3.11 mi7371+308982+97982+976851(Top 27%)871(Top 8%)871(Top 19%)
20K12.43 mi3.11 mi7870-4991196-2141196-2149593(Top 38%)2117(Top 19%)2117(Top 45%)
Half13.11 mi0.68 mi7743+1271153+431153+435904(Top 23%)649(Top 6%)649(Top 14%)
25K15.53 mi2.42 mi8199-4561377-2241377-22410796(Top 42%)2863(Top 26%)2863(Top 61%)
30K18.64 mi3.11 mi8632-4331646-2691646-26910732(Top 42%)3057(Top 28%)3057(Top 66%)
20M20.00 mi1.36 mi8487+145164616467428(Top 29%)1728(Top 16%)1728(Top 37%)
21M21.00 mi1.00 mi8670-1831780-1341780-13412205(Top 48%)4358(Top 40%)4358(Top 94%)
35K21.75 mi0.75 mi8509+1611746+341746+346065(Top 24%)1340(Top 12%)1340(Top 29%)
23M23.00 mi1.25 mi8351+1581741+51741+57482(Top 29%)2131(Top 20%)2131(Top 46%)
24M24.00 mi1.00 mi8463-1121840-991840-9911470(Top 45%)4138(Top 38%)4138(Top 89%)
40K24.85 mi0.85 mi8473-101884-441884-449858(Top 39%)3494(Top 32%)3494(Top 75%)
25.2M25.20 mi0.35 mi8421+521893-91893-97643(Top 30%)2482(Top 23%)2482(Top 53%)
Finish26.22 mi1.02 mi8469-481946-531946-5310696(Top 42%)3836(Top 35%)3836(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

6851

Females

871

F18-39

871

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6710

Females

781

F18-39

781

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

6851

Females

871

F18-39

871

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

9593

Females

2117

F18-39

2117

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

5904

Females

649

F18-39

649

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

10796

Females

2863

F18-39

2863

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

10732

Females

3057

F18-39

3057

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7428

Females

1728

F18-39

1728

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12205

Females

4358

F18-39

4358

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6065

Females

1340

F18-39

1340

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7482

Females

2131

F18-39

2131

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

11470

Females

4138

F18-39

4138

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

9858

Females

3494

F18-39

3494

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7643

Females

2482

F18-39

2482

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

10696

Females

3836

F18-39

3836

Passing Analysis

Category:
Athletes Passed
2947
Passed By
2495
Net Change
+452
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8921
5K → 10K125210+1242#8921#7679
10K → 15K32820+308#7679#7371
15K → 20K75574-499#7371#7870
20K → Half1292+127#7870#7743
Half → 25K87543-456#7743#8199
25K → 30K142575-433#8199#8632
30K → 20M20661+145#8632#8487
20M → 21M65248-183#8487#8670
21M → 35K1709+161#8670#8509
35K → 23M20850+158#8509#8351
23M → 24M57169-112#8351#8463
24M → 40K90100-10#8463#8473
40K → 25.2M7523+52#8473#8421
25.2M → Finish63111-48#8421#8469
TOTALS29472495+452
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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