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BOSTON MARATHON 2024

Molly Kostka

Bib: 25123•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
10:43/mi
33:19
↑ 97↓ 3451.5%
10K· 6.21 mi
10:43/mi
1:06:38
↑ 79↓ 1380.4%
15K· 9.32 mi
10:41/mi
1:39:49
↑ 67↓ 78
20K· 12.43 mi
10:41/mi
2:13:01
↑ 106↓ 860.1%
Half· 13.11 mi
10:21/mi
2:20:05
↑ 19↓ 370.5%
25K· 15.53 mi
10:58/mi
2:46:41
↑ 66↓ 880.2%
30K· 18.64 mi
11:32/mi
3:22:30
↑ 181↓ 1480.2%
20M
11:22/mi
3:37:57
↑ 64↓ 500.2%
21M
12:22/mi
3:50:19
↑ 106↓ 241.6%
35K· 21.75 mi
10:50/mi
3:58:25
↑ 17↓ 861.7%
23M
11:12/mi
4:12:27
↑ 23↓ 630.6%
24M
11:19/mi
4:23:46
↓ 821.3%
40K· 24.85 mi
13:19/mi
4:35:09
↓ 200.3%
25.2M
13:35/mi
4:39:50
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
4:50:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:05
Pace10:41 /mi
2nd Half
Distance13.11 mi
Time2:30:13
Pace11:28 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3333:1910:4333:19
10:43
-
10K
6.21 mi12:23:521:06:3810:4333:19
10:43
0:00
15K
9.32 mi12:57:031:39:4910:4333:11
10:41
-0:02
20K
12.43 mi13:30:152:13:0110:4233:12
10:41
0:00
Half
13.11 mi13:37:192:20:0510:417:04
10:21
-0:20
25K
15.53 mi14:03:552:46:4110:4426:36
10:58
+0:37
30K
18.64 mi14:39:443:22:3010:5235:49
11:32
+0:34
20M
20.00 mi14:55:113:37:5710:5415:27
11:22
-0:10
21M
21.00 mi15:07:333:50:1910:5812:22
12:22
+1:00
35K
21.75 mi15:15:393:58:2510:588:06
10:50
-1:32
23M
23.00 mi15:29:414:12:2710:5914:02
11:12
+0:22
24M
24.00 mi15:41:004:23:4610:5911:19
11:19
+0:07
40K
24.85 mi15:52:234:35:0911:0411:23
13:19
+2:00
25.2M
25.20 mi15:57:044:39:5011:064:41
13:35
+0:16
Finish
26.22 mi16:07:324:50:1811:0510:28
10:16
-3:19

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

10:16 /mi

Average Pace

11:05 /mi

Slowest Pace

13:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

17:32

6% of race

Time at Steady Pace

3:28:31

72% of race

Time at Slower Pace

1:04:15

22% of race

Average Pace: 11:04 /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 mi11:50:3333:1910:4333:19
10:43
#24477
10K
6.21 mi12:23:521:06:3810:4333:19
10:43
#24193
15K
9.32 mi12:57:031:39:4910:4333:11
10:41
#23844
20K
12.43 mi13:30:152:13:0110:4233:12
10:41
#23434
Half
13.11 mi13:37:192:20:0510:417:04
10:21
#23385
25K
15.53 mi14:03:552:46:4110:4426:36
10:58
#23058
30K
18.64 mi14:39:443:22:3010:5235:49
11:32
#22705
20M
20.00 mi14:55:113:37:5710:5415:27
11:22
#22535
21M
21.00 mi15:07:333:50:1910:5812:22
12:22
#22394
35K
21.75 mi15:15:393:58:2510:588:06
10:50
#22286
23M
23.00 mi15:29:414:12:2710:5914:02
11:12
#22103
24M
24.00 mi15:41:004:23:4610:5911:19
11:19
#22001
40K
24.85 mi15:52:234:35:0911:0411:23
13:19
#22042
25.2M
25.20 mi15:57:044:39:5011:064:41
13:35
#22026
Finish
26.22 mi16:07:324:50:1811:0510:28
10:16
#21951
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24477102291022923248(Top 91%)9561(Top 88%)9561(Top 205%)
10K6.21 mi3.10 mi24193+28410065+16410065+16423908(Top 94%)9916(Top 91%)9916(Top 213%)
15K9.32 mi3.11 mi23844+3499873+1929873+19223248(Top 91%)9561(Top 88%)9561(Top 205%)
20K12.43 mi3.11 mi23434+4109668+2059668+20522067(Top 86%)8947(Top 82%)8947(Top 192%)
Half13.11 mi0.68 mi23385+499645+239645+2322383(Top 88%)9166(Top 84%)9166(Top 197%)
25K15.53 mi2.42 mi23058+3279486+1599486+15921441(Top 84%)8708(Top 80%)8708(Top 187%)
30K18.64 mi3.11 mi22705+3539338+1489338+14821079(Top 83%)8680(Top 79%)8680(Top 186%)
20M20.00 mi1.36 mi22535+1709262+769262+7620122(Top 79%)8294(Top 76%)8294(Top 178%)
21M21.00 mi1.00 mi22394+1419206+569206+5619608(Top 77%)8129(Top 74%)8129(Top 174%)
35K21.75 mi0.75 mi22286+1089158+489158+4819431(Top 76%)8047(Top 74%)8047(Top 173%)
23M23.00 mi1.25 mi22103+1839086+729086+7218977(Top 74%)7881(Top 72%)7881(Top 169%)
24M24.00 mi1.00 mi22001+1029056+309056+3020038(Top 78%)8464(Top 77%)8464(Top 182%)
40K24.85 mi0.85 mi22042-419099-439099-4322742(Top 89%)9807(Top 90%)9807(Top 210%)
25.2M25.20 mi0.35 mi22026+169099909920899(Top 82%)8945(Top 82%)8945(Top 192%)
Finish26.22 mi1.02 mi21951+759077+229077+2219335(Top 76%)8145(Top 75%)8145(Top 175%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

23248

Females

9561

F18-39

9561

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

23908

Females

9916

F18-39

9916

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

23248

Females

9561

F18-39

9561

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22067

Females

8947

F18-39

8947

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

22383

Females

9166

F18-39

9166

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

21441

Females

8708

F18-39

8708

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

21079

Females

8680

F18-39

8680

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

20122

Females

8294

F18-39

8294

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

19608

Females

8129

F18-39

8129

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

19431

Females

8047

F18-39

8047

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

18977

Females

7881

F18-39

7881

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20038

Females

8464

F18-39

8464

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

22742

Females

9807

F18-39

9807

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

20899

Females

8945

F18-39

8945

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

19335

Females

8145

F18-39

8145

Passing Analysis

Category:
Athletes Passed
2805
Passed By
279
Net Change
+2526
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24477
5K → 10K34056+284#24477#24193
10K → 15K36314+349#24193#23844
15K → 20K4199+410#23844#23434
20K → Half578+49#23434#23385
Half → 25K33710+327#23385#23058
25K → 30K37421+353#23058#22705
30K → 20M1788+170#22705#22535
20M → 21M15211+141#22535#22394
21M → 35K1157+108#22394#22286
35K → 23M1896+183#22286#22103
23M → 24M11513+102#22103#22001
24M → 40K4687-41#22001#22042
40K → 25.2M3014+16#22042#22026
25.2M → Finish9015+75#22026#21951
TOTALS2805279+2526
📊

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