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BOSTON MARATHON 2024

Sebastiaan Den Bak

Bib: 3925•M

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 6%
Gender (Male)
#0 / 14578
Top 10%
Division (M18-39)
#0 / 4849
Top 23%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:34
Rank: #2079
Start → 5K
6:18/mi
19:34 split
10K· 6.21 mi
39:16
Rank: #2074 (+5)
5K → 10K
6:20/mi
19:42 split
15K· 9.32 mi
59:04
Rank: #2056 (+18)
10K → 15K
6:22/mi
19:48 split
20K· 12.43 mi
1:18:58
Rank: #1939 (+117)
15K → 20K
6:24/mi
19:54 split
Half· 13.11 mi
1:23:16
Rank: #1918 (+21)
20K → Half
6:18/mi
4:18 split
25K· 15.53 mi
1:38:51
Rank: #1816 (+102)
Half → 25K
6:26/mi
15:35 split
30K· 18.64 mi
1:59:43
Rank: #1720 (+96)
25K → 30K
6:43/mi
20:52 split
20M
2:08:56
Rank: #1671 (+49)
30K → 20M
6:47/mi
9:13 split
21M
2:16:10
Rank: #1621 (+50)
20M → 21M
7:14/mi
7:14 split
35K· 21.75 mi
2:21:06
Rank: #1591 (+30)
21M → 35K
6:36/mi
4:56 split
23M
2:29:35
Rank: #1523 (+68)
35K → 23M
6:47/mi
8:29 split
24M
2:36:04
Rank: #1455 (+68)
23M → 24M
6:29/mi
6:29 split
40K· 24.85 mi
2:41:50
Rank: #1421 (+34)
24M → 40K
6:45/mi
5:46 split
25.2M
2:44:37
Rank: #1432 (-11)
40K → 25.2M
8:04/mi
2:47 split
Finish· 26.22 mi
2:51:52
Rank: #1470 (-38)
25.2M → Finish
7:07/mi
7:15 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:16
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:28:36
Pace6:46 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3519:346:1819:34
6:18
-
10K
6.21 mi10:41:1739:166:1919:42
6:20
+0:02
15K
9.32 mi11:01:0559:046:2019:48
6:22
+0:02
20K
12.43 mi11:20:591:18:586:2119:54
6:24
+0:02
Half
13.11 mi11:25:171:23:166:214:18
6:18
-0:06
25K
15.53 mi11:40:521:38:516:2215:35
6:26
+0:08
30K
18.64 mi12:01:441:59:436:2520:52
6:43
+0:17
20M
20.00 mi12:10:572:08:566:279:13
6:47
+0:04
21M
21.00 mi12:18:112:16:106:297:14
7:14
+0:27
35K
21.75 mi12:23:072:21:066:294:56
6:36
-0:38
23M
23.00 mi12:31:362:29:356:308:29
6:47
+0:11
24M
24.00 mi12:38:052:36:046:306:29
6:29
-0:18
40K
24.85 mi12:43:512:41:506:315:46
6:45
+0:16
25.2M
25.20 mi12:46:382:44:376:322:47
8:04
+1:19
Finish
26.22 mi12:53:532:51:526:347:15
7:07
-0:57

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

6:18 /mi

Average Pace

6:34 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:03:22

37% of race

Time at Steady Pace

1:31:14

53% of race

Time at Slower Pace

17:16

10% of race

Average Pace: 6:33 /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 mi10:21:3519:346:1819:34
6:18
#2079
10K
6.21 mi10:41:1739:166:1919:42
6:20
#2074
15K
9.32 mi11:01:0559:046:2019:48
6:22
#2056
20K
12.43 mi11:20:591:18:586:2119:54
6:24
#1939
Half
13.11 mi11:25:171:23:166:214:18
6:18
#1918
25K
15.53 mi11:40:521:38:516:2215:35
6:26
#1816
30K
18.64 mi12:01:441:59:436:2520:52
6:43
#1720
20M
20.00 mi12:10:572:08:566:279:13
6:47
#1671
21M
21.00 mi12:18:112:16:106:297:14
7:14
#1621
35K
21.75 mi12:23:072:21:066:294:56
6:36
#1591
23M
23.00 mi12:31:362:29:356:308:29
6:47
#1523
24M
24.00 mi12:38:052:36:046:306:29
6:29
#1455
40K
24.85 mi12:43:512:41:506:315:46
6:45
#1421
25.2M
25.20 mi12:46:382:44:376:322:47
8:04
#1432
Finish
26.22 mi12:53:532:51:526:347:15
7:07
#1470
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2079201420142039(Top 8%)1972(Top 14%)1972(Top 41%)
10K6.21 mi3.10 mi2074+52005+92005+92106(Top 8%)2034(Top 14%)2034(Top 42%)
15K9.32 mi3.11 mi2056+181987+181987+182039(Top 8%)1972(Top 14%)1972(Top 41%)
20K12.43 mi3.11 mi1939+1171875+1121875+1121753(Top 7%)1691(Top 12%)1691(Top 35%)
Half13.11 mi0.68 mi1918+211859+161859+161672(Top 7%)1617(Top 11%)1617(Top 33%)
25K15.53 mi2.42 mi1816+1021758+1011758+1011519(Top 6%)1465(Top 10%)1465(Top 30%)
30K18.64 mi3.11 mi1720+961663+951663+951662(Top 7%)1588(Top 11%)1588(Top 33%)
20M20.00 mi1.36 mi1671+491614+491614+491537(Top 6%)1456(Top 10%)1456(Top 30%)
21M21.00 mi1.00 mi1621+501562+521562+521632(Top 6%)1527(Top 10%)1527(Top 31%)
35K21.75 mi0.75 mi1591+301530+321530+321516(Top 6%)1419(Top 10%)1419(Top 29%)
23M23.00 mi1.25 mi1523+681460+701460+701243(Top 5%)1172(Top 8%)1172(Top 24%)
24M24.00 mi1.00 mi1455+681395+651395+65938(Top 4%)879(Top 6%)879(Top 18%)
40K24.85 mi0.85 mi1421+341362+331362+331174(Top 5%)1087(Top 7%)1087(Top 22%)
25.2M25.20 mi0.35 mi1432-111371-91371-92889(Top 11%)2426(Top 17%)2426(Top 50%)
Finish26.22 mi1.02 mi1470-381403-321403-323596(Top 14%)2925(Top 20%)2925(Top 60%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2039

Males

1972

M18-39

1972

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2106

Males

2034

M18-39

2034

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2039

Males

1972

M18-39

1972

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1753

Males

1691

M18-39

1691

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1672

Males

1617

M18-39

1617

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1519

Males

1465

M18-39

1465

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1662

Males

1588

M18-39

1588

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1537

Males

1456

M18-39

1456

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1632

Males

1527

M18-39

1527

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1516

Males

1419

M18-39

1419

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1243

Males

1172

M18-39

1172

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

938

Males

879

M18-39

879

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1174

Males

1087

M18-39

1087

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2889

Males

2426

M18-39

2426

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3596

Males

2925

M18-39

2925

Passing Analysis

Category:
Athletes Passed
1051
Passed By
442
Net Change
+609
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2079
5K → 10K112107+5#2079#2074
10K → 15K9072+18#2074#2056
15K → 20K14629+117#2056#1939
20K → Half298+21#1939#1918
Half → 25K12321+102#1918#1816
25K → 30K14145+96#1816#1720
30K → 20M6718+49#1720#1671
20M → 21M7626+50#1671#1621
21M → 35K399+30#1621#1591
35K → 23M8416+68#1591#1523
23M → 24M735+68#1523#1455
24M → 40K439+34#1455#1421
40K → 25.2M1122-11#1421#1432
25.2M → Finish1755-38#1432#1470
TOTALS1051442+609
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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