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BOSTON MARATHON 2024

Sonny Chu

Bib: 2975 M US

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 10%
Gender (Male)
#0 / 14578
Top 17%
Masters (Masters Men)
#0 / 9729
Top 7%
Division (M40-44)
#0 / 2009
Top 20%
Race Day Weather
55°/45°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:41/mi
20:46
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:46/mi
41:46
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:42/mi
1:02:36
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:47/mi
1:23:42
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:42/mi
1:28:16
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:45/mi
1:44:39
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:56/mi
2:06:10
↑ 181↓ 1480.2%
138 ft elev
20M
7:02/mi
2:15:44
↑ 64↓ 500.2%
148 ft elev
21M
7:24/mi
2:23:08
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:56/mi
2:28:19
↑ 17↓ 861.7%
156 ft elev
23M
7:18/mi
2:37:27
↑ 23↓ 630.6%
116 ft elev
24M
6:46/mi
2:44:13
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:38/mi
2:49:53
↓ 200.3%
20 ft elev
25.2M
7:18/mi
2:52:24
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:16/mi
2:58:47
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:28:166:44 /mi⚡ faster
2nd Half
1:30:316:54 /mi+2.5%
Positive split — 2.5% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
20:466:413.11 mi20:46
6:41
-
10K
41:466:433.10 mi21:00
6:46
+0:05
15K
1:02:366:433.11 mi20:50
6:42
-0:04
20K
1:23:426:443.11 mi21:06
6:47
+0:05
Half(13.11 mi)
1:28:166:440.68 mi4:34
6:42
-0:05
25K
1:44:396:442.42 mi16:23
6:45
+0:03
30K
2:06:106:463.11 mi21:31
6:56
+0:11
20M
2:15:446:471.36 mi9:34
7:02
+0:06
21M
2:23:086:491.00 mi7:24
7:24
+0:22
35K
2:28:196:490.75 mi5:11
6:56
-0:28
23M
2:37:276:511.25 mi9:08
7:18
+0:22
24M
2:44:136:511.00 mi6:46
6:46
-0:32
40K
2:49:536:500.85 mi5:40
6:38
-0:08
25.2M
2:52:246:500.35 mi2:31
7:18
+0:40
Finish(26.22 mi)
2:58:476:491.02 mi6:23
6:16
-1:02
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:16 /mi

Average Pace

6:49 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:03:28

69% of race

Time at Steady Pace

47:55

27% of race

Time at Slower Pace

7:24

4% of race

Average Pace: 6:49 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi469243704370395937263726
10K3.10 mi4720-284397-274397-27480944634463
15K3.11 mi4446+2744156+2414156+241395937263726
20K3.11 mi4225+2213958+1983958+198378535553555
Half(13.11 mi)0.68 mi4177+483920+383920+38367134413441
25K2.42 mi3894+2833664+2563664+256293827712771
30K3.11 mi3492+4023291+3733291+373249323412341
20M1.36 mi3356+1363158+1333158+133252623492349
21M1.00 mi3215+1413024+1343024+134219320252025
35K0.75 mi3167+482975+492975+49276725072507
23M1.25 mi3102+652907+682907+68287625562556
24M1.00 mi2994+1082808+992808+99158714631463
40K0.85 mi2827+1672654+1542654+154963895895
25.2M0.35 mi2751+762585+692585+691043964964
Finish(26.22 mi)1.02 mi2600+1512442+1432442+143857798798

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21story building
+97ft-345ft

Overall

3959

Males

3726

M40-44

3726

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

4809

Males

4463

M40-44

4463

10K→15K

6.2 - 9.3 mi

Top 15%
×3story building
+67ft-78ft

Overall

3959

Males

3726

M40-44

3726

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

3785

Males

3555

M40-44

3555

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3671

Males

3441

M40-44

3441

Half→25K

13.1 - 15.5 mi

Top 11%
×4story building
+66ft-88ft

Overall

2938

Males

2771

M40-44

2771

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2493

Males

2341

M40-44

2341

30K→20M

18.6 - 20.0 mi

Top 10%
×5story building
+64ft-50ft

Overall

2526

Males

2349

M40-44

2349

20M→21M

20.0 - 21.0 mi

Top 9%
×8story building
+106ft-24ft

Overall

2193

Males

2025

M40-44

2025

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

2767

Males

2507

M40-44

2507

35K→23M

21.8 - 23.0 mi

Top 11%
×5story building
+23ft-63ft

Overall

2876

Males

2556

M40-44

2556

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1587

Males

1463

M40-44

1463

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

963

Males

895

M40-44

895

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1043

Males

964

M40-44

964

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

857

Males

798

M40-44

798

Passing Analysis

Category:
Passed
2503
Passed By
411
Net Change
+2092
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4692
5K → 10K171199-28#4692#4720
10K → 15K29925+274#4720#4446
15K → 20K26544+221#4446#4225
20K → Half524+48#4225#4177
Half → 25K29411+283#4177#3894
25K → 30K42624+402#3894#3492
30K → 20M15418+136#3492#3356
20M → 21M15413+141#3356#3215
21M → 35K6820+48#3215#3167
35K → 23M11247+65#3167#3102
23M → 24M1124+108#3102#2994
24M → 40K1670+167#2994#2827
40K → 25.2M760+76#2827#2751
25.2M → Finish1532+151#2751#2600
TOTALS2503411+2092

Passing Charts

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