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BOSTON MARATHON 2024

Heather Kralj

Bib: 15831•F

TN

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F45-49)
#0 / 1753
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
8:15/mi
25:38
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
51:38
↑ 79↓ 1380.4%
15K· 9.32 mi
9:36/mi
1:21:27
↑ 67↓ 78
20K· 12.43 mi
10:15/mi
1:53:18
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
1:59:24
↑ 19↓ 370.5%
25K· 15.53 mi
10:34/mi
2:25:00
↑ 66↓ 880.2%
30K· 18.64 mi
10:25/mi
2:57:21
↑ 181↓ 1480.2%
20M
11:43/mi
3:13:17
↑ 64↓ 500.2%
21M
11:29/mi
3:24:46
↑ 106↓ 241.6%
35K· 21.75 mi
9:20/mi
3:31:45
↑ 17↓ 861.7%
23M
10:31/mi
3:44:55
↑ 23↓ 630.6%
24M
10:07/mi
3:55:02
↓ 821.3%
40K· 24.85 mi
12:06/mi
4:05:23
↓ 200.3%
25.2M
13:32/mi
4:10:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
4:18:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:24
Pace9:06 /mi
2nd Half
Distance13.11 mi
Time2:19:32
Pace10:39 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:5125:388:1525:38
8:15
-
10K
6.21 mi11:24:5151:388:1926:00
8:22
+0:07
15K
9.32 mi11:54:401:21:278:4429:49
9:36
+1:14
20K
12.43 mi12:26:311:53:189:0731:51
10:15
+0:39
Half
13.11 mi12:32:371:59:249:066:06
8:56
-1:19
25K
15.53 mi12:58:132:25:009:2025:36
10:34
+1:38
30K
18.64 mi13:30:342:57:219:3132:21
10:25
-0:09
20M
20.00 mi13:46:303:13:179:4015:56
11:43
+1:18
21M
21.00 mi13:57:593:24:469:4511:29
11:29
-0:14
35K
21.75 mi14:04:583:31:459:446:59
9:20
-2:09
23M
23.00 mi14:18:083:44:559:4713:10
10:31
+1:11
24M
24.00 mi14:28:153:55:029:4810:07
10:07
-0:24
40K
24.85 mi14:38:364:05:239:5210:21
12:06
+1:59
25.2M
25.20 mi14:43:164:10:039:554:40
13:32
+1:26
Finish
26.22 mi14:52:094:18:569:538:53
8:43
-4:49

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

8:15 /mi

Average Pace

9:53 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:13:36

28% of race

Time at Steady Pace

2:22:54

55% of race

Time at Slower Pace

42:26

16% of race

Average Pace: 9:53 /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 mi10:58:5125:388:1525:38
8:15
#16367
10K
6.21 mi11:24:5151:388:1926:00
8:22
#16414
15K
9.32 mi11:54:401:21:278:4429:49
9:36
#18383
20K
12.43 mi12:26:311:53:189:0731:51
10:15
#19440
Half
13.11 mi12:32:371:59:249:066:06
8:56
#19366
25K
15.53 mi12:58:132:25:009:2025:36
10:34
#19635
30K
18.64 mi13:30:342:57:219:3132:21
10:25
#19423
20M
20.00 mi13:46:303:13:179:4015:56
11:43
#19533
21M
21.00 mi13:57:593:24:469:4511:29
11:29
#19402
35K
21.75 mi14:04:583:31:459:446:59
9:20
#19232
23M
23.00 mi14:18:083:44:559:4713:10
10:31
#19068
24M
24.00 mi14:28:153:55:029:4810:07
10:07
#18941
40K
24.85 mi14:38:364:05:239:5210:21
12:06
#19007
25.2M
25.20 mi14:43:164:10:039:554:40
13:32
#19042
Finish
26.22 mi14:52:094:18:569:538:53
8:43
#18841
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi163675787578720947(Top 82%)8287(Top 76%)8287(Top 473%)
10K6.21 mi3.10 mi16414-475811-245811-2416536(Top 65%)5851(Top 54%)5851(Top 334%)
15K9.32 mi3.11 mi18383-19696957-11466957-114620947(Top 82%)8287(Top 76%)8287(Top 473%)
20K12.43 mi3.11 mi19440-10577536-5797536-57921120(Top 83%)8424(Top 77%)8424(Top 481%)
Half13.11 mi0.68 mi19366+747495+417495+4118038(Top 71%)6818(Top 62%)6818(Top 389%)
25K15.53 mi2.42 mi19635-2697649-1547649-15420557(Top 80%)8213(Top 75%)8213(Top 469%)
30K18.64 mi3.11 mi19423+2127602+477602+4718561(Top 73%)7338(Top 67%)7338(Top 419%)
20M20.00 mi1.36 mi19533-1107682-807682-8020871(Top 82%)8674(Top 79%)8674(Top 495%)
21M21.00 mi1.00 mi19402+1317638+447638+4417636(Top 69%)7158(Top 66%)7158(Top 408%)
35K21.75 mi0.75 mi19232+1707565+737565+7314897(Top 58%)5801(Top 53%)5801(Top 331%)
23M23.00 mi1.25 mi19068+1647500+657500+6517103(Top 67%)6962(Top 64%)6962(Top 397%)
24M24.00 mi1.00 mi18941+1277451+497451+4916719(Top 65%)6803(Top 62%)6803(Top 388%)
40K24.85 mi0.85 mi19007-667509-587509-5820668(Top 81%)8830(Top 81%)8830(Top 504%)
25.2M25.20 mi0.35 mi19042-357527-187527-1820791(Top 81%)8897(Top 81%)8897(Top 508%)
Finish26.22 mi1.02 mi18841+2017452+757452+7512776(Top 50%)4864(Top 45%)4864(Top 277%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

20947

Females

8287

F45-49

8287

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

16536

Females

5851

F45-49

5851

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

20947

Females

8287

F45-49

8287

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

21120

Females

8424

F45-49

8424

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18038

Females

6818

F45-49

6818

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

20557

Females

8213

F45-49

8213

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

18561

Females

7338

F45-49

7338

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

20871

Females

8674

F45-49

8674

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

17636

Females

7158

F45-49

7158

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

14897

Females

5801

F45-49

5801

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17103

Females

6962

F45-49

6962

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

16719

Females

6803

F45-49

6803

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

20668

Females

8830

F45-49

8830

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

20791

Females

8897

F45-49

8897

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

12776

Females

4864

F45-49

4864

Passing Analysis

Category:
Athletes Passed
1812
Passed By
4286
Net Change
-2474
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16367
5K → 10K262309-47#16367#16414
10K → 15K131982-1969#16414#18383
15K → 20K641121-1057#18383#19440
20K → Half817+74#19440#19366
Half → 25K108377-269#19366#19635
25K → 30K30997+212#19635#19423
30K → 20M51161-110#19423#19533
20M → 21M15625+131#19533#19402
21M → 35K1722+170#19402#19232
35K → 23M19026+164#19232#19068
23M → 24M14013+127#19068#18941
24M → 40K42108-66#18941#19007
40K → 25.2M2055-35#19007#19042
25.2M → Finish2043+201#19042#18841
TOTALS18124286-2474
📊

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