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BOSTON MARATHON 2024

Siu Hung Chau

Bib: 21589•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M65-69)
#0 / 617
Top 11%
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
7:11/mi
22:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
46:00
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:10:42
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:36:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:42:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:19/mi
2:02:27
↑ 66↓ 880.2%
30K· 18.64 mi
9:06/mi
2:30:42
↑ 181↓ 1480.2%
20M
10:06/mi
2:44:25
↑ 64↓ 500.2%
21M
10:55/mi
2:55:20
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:01:40
↑ 17↓ 861.7%
23M
10:00/mi
3:14:11
↑ 23↓ 630.6%
24M
8:21/mi
3:22:32
↓ 821.3%
40K· 24.85 mi
10:12/mi
3:31:15
↓ 200.3%
25.2M
10:35/mi
3:34:54
↑ 13↓ 160.2%
Finish· 26.22 mi
9:47/mi
3:44:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:18
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time2:02:34
Pace9:21 /mi
📊Positive Split: 19.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3122:207:1122:20
7:11
-
10K
6.21 mi11:42:1146:007:2423:40
7:37
+0:26
15K
9.32 mi12:06:531:10:427:3524:42
7:57
+0:20
20K
12.43 mi12:33:001:36:497:4726:07
8:24
+0:27
Half
13.11 mi12:38:291:42:187:485:29
8:02
-0:22
25K
15.53 mi12:58:382:02:277:5320:09
8:19
+0:17
30K
18.64 mi13:26:532:30:428:0528:15
9:06
+0:47
20M
20.00 mi13:40:362:44:258:1313:43
10:06
+1:00
21M
21.00 mi13:51:312:55:208:2110:55
10:55
+0:49
35K
21.75 mi13:57:513:01:408:216:20
8:28
-2:27
23M
23.00 mi14:10:223:14:118:2712:31
10:00
+1:32
24M
24.00 mi14:18:433:22:328:268:21
8:21
-1:39
40K
24.85 mi14:27:263:31:158:308:43
10:12
+1:51
25.2M
25.20 mi14:31:053:34:548:323:39
10:35
+0:23
Finish
26.22 mi14:41:033:44:528:359:58
9:47
-0:48

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

7:11 /mi

Average Pace

8:35 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:00

20% of race

Time at Steady Pace

1:31:08

41% of race

Time at Slower Pace

1:27:44

39% of race

Average Pace: 8:35 /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 mi11:18:3122:207:1122:20
7:11
#8333
10K
6.21 mi11:42:1146:007:2423:40
7:37
#9659
15K
9.32 mi12:06:531:10:427:3524:42
7:57
#10850
20K
12.43 mi12:33:001:36:497:4726:07
8:24
#11819
Half
13.11 mi12:38:291:42:187:485:29
8:02
#11877
25K
15.53 mi12:58:382:02:277:5320:09
8:19
#11848
30K
18.64 mi13:26:532:30:428:0528:15
9:06
#12249
20M
20.00 mi13:40:362:44:258:1313:43
10:06
#12638
21M
21.00 mi13:51:312:55:208:2110:55
10:55
#12883
35K
21.75 mi13:57:513:01:408:216:20
8:28
#12762
23M
23.00 mi14:10:223:14:118:2712:31
10:00
#12964
24M
24.00 mi14:18:433:22:328:268:21
8:21
#12741
40K
24.85 mi14:27:263:31:158:308:43
10:12
#12905
25.2M
25.20 mi14:31:053:34:548:323:39
10:35
#12895
Finish
26.22 mi14:41:033:44:528:359:58
9:47
#13114
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi83337011701113071(Top 51%)9203(Top 63%)9203(Top 1492%)
10K6.21 mi3.10 mi9659-13267745-7347745-73411201(Top 44%)8413(Top 58%)8413(Top 1364%)
15K9.32 mi3.11 mi10850-11918278-5338278-53313071(Top 51%)9203(Top 63%)9203(Top 1492%)
20K12.43 mi3.11 mi11819-9698674-3968674-39614271(Top 56%)9647(Top 66%)9647(Top 1564%)
Half13.11 mi0.68 mi11877-588690-168690-1612976(Top 51%)9075(Top 62%)9075(Top 1471%)
25K15.53 mi2.42 mi11848+298638+528638+5212042(Top 47%)8476(Top 58%)8476(Top 1374%)
30K18.64 mi3.11 mi12249-4018739-1018739-10113667(Top 53%)8986(Top 62%)8986(Top 1456%)
20M20.00 mi1.36 mi12638-3898846-1078846-10716780(Top 66%)10144(Top 70%)10144(Top 1644%)
21M21.00 mi1.00 mi12883-2458892-468892-4616104(Top 63%)9686(Top 66%)9686(Top 1570%)
35K21.75 mi0.75 mi12762+1218799+938799+9310519(Top 41%)6999(Top 48%)6999(Top 1134%)
23M23.00 mi1.25 mi12964-2028819-208819-2015443(Top 60%)9269(Top 64%)9269(Top 1502%)
24M24.00 mi1.00 mi12741+2238679+1408679+1408555(Top 33%)5803(Top 40%)5803(Top 941%)
40K24.85 mi0.85 mi12905-1648704-258704-2515660(Top 61%)9280(Top 64%)9280(Top 1504%)
25.2M25.20 mi0.35 mi12895+108679+258679+2513071(Top 51%)7922(Top 54%)7922(Top 1284%)
Finish26.22 mi1.02 mi13114-2198746-678746-6717625(Top 69%)10259(Top 70%)10259(Top 1663%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13071

Males

9203

M65-69

9203

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

11201

Males

8413

M65-69

8413

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13071

Males

9203

M65-69

9203

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

14271

Males

9647

M65-69

9647

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

12976

Males

9075

M65-69

9075

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

12042

Males

8476

M65-69

8476

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

13667

Males

8986

M65-69

8986

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

16780

Males

10144

M65-69

10144

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

16104

Males

9686

M65-69

9686

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10519

Males

6999

M65-69

6999

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15443

Males

9269

M65-69

9269

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8555

Males

5803

M65-69

5803

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

15660

Males

9280

M65-69

9280

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13071

Males

7922

M65-69

7922

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

17625

Males

10259

M65-69

10259

Passing Analysis

Category:
Athletes Passed
1265
Passed By
6044
Net Change
-4781
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8333
5K → 10K361362-1326#8333#9659
10K → 15K231212-1191#9659#10850
15K → 20K541023-969#10850#11819
20K → Half2684-58#11819#11877
Half → 25K247218+29#11877#11848
25K → 30K171572-401#11848#12249
30K → 20M53442-389#12249#12638
20M → 21M63308-245#12638#12883
21M → 35K13615+121#12883#12762
35K → 23M81283-202#12762#12964
23M → 24M2329+223#12964#12741
24M → 40K65229-164#12741#12905
40K → 25.2M4434+10#12905#12895
25.2M → Finish34253-219#12895#13114
TOTALS12656044-4781
📊

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