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BOSTON MARATHON 2024

Stephen Tsui

Bib: 10234•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 39%
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Top 41%
Division (M45-49)
#0 / 2218
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:46
Rank: #7091
Start → 5K
7:00/mi
21:46 split
10K· 6.21 mi
43:40
Rank: #7013 (+78)
5K → 10K
7:03/mi
21:54 split
15K· 9.32 mi
1:05:33
Rank: #6803 (+210)
10K → 15K
7:03/mi
21:53 split
20K· 12.43 mi
1:27:43
Rank: #6532 (+271)
15K → 20K
7:08/mi
22:10 split
Half· 13.11 mi
1:32:34
Rank: #6514 (+18)
20K → Half
7:07/mi
4:51 split
25K· 15.53 mi
1:50:15
Rank: #6312 (+202)
Half → 25K
7:18/mi
17:41 split
30K· 18.64 mi
2:14:26
Rank: #6239 (+73)
25K → 30K
7:47/mi
24:11 split
20M
2:26:16
Rank: #6502 (-263)
30K → 20M
8:42/mi
11:50 split
21M
2:36:48
Rank: #6996 (-494)
20M → 21M
10:32/mi
10:32 split
35K· 21.75 mi
2:44:30
Rank: #7515 (-519)
21M → 35K
10:18/mi
7:42 split
23M
2:58:33
Rank: #8462 (-947)
35K → 23M
11:13/mi
14:03 split
24M
3:08:54
Rank: #8997 (-535)
23M → 24M
10:21/mi
10:21 split
40K· 24.85 mi
3:17:49
Rank: #9414 (-417)
24M → 40K
10:26/mi
8:55 split
25.2M
3:21:51
Rank: #9607 (-193)
40K → 25.2M
11:42/mi
4:02 split
Finish· 26.22 mi
3:31:57
Rank: #10028 (-421)
25.2M → Finish
9:55/mi
10:06 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:34
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:59:23
Pace9:06 /mi
📊Positive Split: 29.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1221:467:0021:46
7:00
-
10K
6.21 mi11:10:0643:407:0221:54
7:03
+0:03
15K
9.32 mi11:31:591:05:337:0221:53
7:03
0:00
20K
12.43 mi11:54:091:27:437:0322:10
7:08
+0:05
Half
13.11 mi11:59:001:32:347:044:51
7:07
-0:01
25K
15.53 mi12:16:411:50:157:0617:41
7:18
+0:11
30K
18.64 mi12:40:522:14:267:1324:11
7:47
+0:29
20M
20.00 mi12:52:422:26:167:1911:50
8:42
+0:55
21M
21.00 mi13:03:142:36:487:2810:32
10:32
+1:50
35K
21.75 mi13:10:562:44:307:347:42
10:18
-0:14
23M
23.00 mi13:24:592:58:337:4614:03
11:13
+0:55
24M
24.00 mi13:35:203:08:547:5210:21
10:21
-0:52
40K
24.85 mi13:44:153:17:497:588:55
10:26
+0:05
25.2M
25.20 mi13:48:173:21:518:014:02
11:42
+1:16
Finish
26.22 mi13:58:233:31:578:0510:06
9:55
-1:47

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

8:05 /mi

Slowest Pace

11:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:26

63% of race

Time at Steady Pace

11:50

6% of race

Time at Slower Pace

1:05:41

31% of race

Average Pace: 8:05 /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 mi10:48:1221:467:0021:46
7:00
#7091
10K
6.21 mi11:10:0643:407:0221:54
7:03
#7013
15K
9.32 mi11:31:591:05:337:0221:53
7:03
#6803
20K
12.43 mi11:54:091:27:437:0322:10
7:08
#6532
Half
13.11 mi11:59:001:32:347:044:51
7:07
#6514
25K
15.53 mi12:16:411:50:157:0617:41
7:18
#6312
30K
18.64 mi12:40:522:14:267:1324:11
7:47
#6239
20M
20.00 mi12:52:422:26:167:1911:50
8:42
#6502
21M
21.00 mi13:03:142:36:487:2810:32
10:32
#6996
35K
21.75 mi13:10:562:44:307:347:42
10:18
#7515
23M
23.00 mi13:24:592:58:337:4614:03
11:13
#8462
24M
24.00 mi13:35:203:08:547:5210:21
10:21
#8997
40K
24.85 mi13:44:153:17:497:588:55
10:26
#9414
25.2M
25.20 mi13:48:173:21:518:014:02
11:42
#9607
Finish
26.22 mi13:58:233:31:578:0510:06
9:55
#10028
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7091623962396476(Top 25%)5720(Top 39%)5720(Top 258%)
10K6.21 mi3.10 mi7013+786154+856154+856990(Top 27%)6115(Top 42%)6115(Top 276%)
15K9.32 mi3.11 mi6803+2105989+1655989+1656476(Top 25%)5720(Top 39%)5720(Top 258%)
20K12.43 mi3.11 mi6532+2715777+2125777+2126013(Top 24%)5329(Top 37%)5329(Top 240%)
Half13.11 mi0.68 mi6514+185761+165761+166421(Top 25%)5619(Top 39%)5619(Top 253%)
25K15.53 mi2.42 mi6312+2025577+1845577+1845803(Top 23%)5061(Top 35%)5061(Top 228%)
30K18.64 mi3.11 mi6239+735470+1075470+1076621(Top 26%)5402(Top 37%)5402(Top 244%)
20M20.00 mi1.36 mi6502-2635616-1465616-14610569(Top 41%)7300(Top 50%)7300(Top 329%)
21M21.00 mi1.00 mi6996-4945898-2825898-28214927(Top 58%)9104(Top 62%)9104(Top 410%)
35K21.75 mi0.75 mi7515-5196184-2866184-28617981(Top 70%)10605(Top 73%)10605(Top 478%)
23M23.00 mi1.25 mi8462-9476653-4696653-46918979(Top 74%)11060(Top 76%)11060(Top 499%)
24M24.00 mi1.00 mi8997-5356901-2486901-24817413(Top 68%)10211(Top 70%)10211(Top 460%)
40K24.85 mi0.85 mi9414-4177067-1667067-16616456(Top 64%)9690(Top 66%)9690(Top 437%)
25.2M25.20 mi0.35 mi9607-1937151-847151-8416524(Top 65%)9678(Top 66%)9678(Top 436%)
Finish26.22 mi1.02 mi10028-4217313-1627313-16218075(Top 71%)10491(Top 72%)10491(Top 473%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21story building
+97ft-345ft

Overall

6476

Males

5720

M45-49

5720

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

6990

Males

6115

M45-49

6115

10K→15K

6.2 - 9.3 mi

Top 25%
×3story building
+67ft-78ft

Overall

6476

Males

5720

M45-49

5720

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6013

Males

5329

M45-49

5329

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

6421

Males

5619

M45-49

5619

Half→25K

13.1 - 15.5 mi

Top 23%
×4story building
+66ft-88ft

Overall

5803

Males

5061

M45-49

5061

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

6621

Males

5402

M45-49

5402

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10569

Males

7300

M45-49

7300

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

14927

Males

9104

M45-49

9104

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

17981

Males

10605

M45-49

10605

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

18979

Males

11060

M45-49

11060

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

17413

Males

10211

M45-49

10211

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16456

Males

9690

M45-49

9690

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

16524

Males

9678

M45-49

9678

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

18075

Males

10491

M45-49

10491

Passing Analysis

Category:
Athletes Passed
1546
Passed By
4481
Net Change
-2937
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7091
5K → 10K225147+78#7091#7013
10K → 15K27464+210#7013#6803
15K → 20K30635+271#6803#6532
20K → Half4426+18#6532#6514
Half → 25K24745+202#6514#6312
25K → 30K261188+73#6312#6239
30K → 20M53316-263#6239#6502
20M → 21M27521-494#6502#6996
21M → 35K18537-519#6996#7515
35K → 23M19966-947#7515#8462
23M → 24M13548-535#8462#8997
24M → 40K24441-417#8997#9414
40K → 25.2M13206-193#9414#9607
25.2M → Finish22441-421#9607#10028
TOTALS15464481-2937
📊

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