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BOSTON MARATHON 2023

Chuong Ma

Bib: 12530•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 49%
Masters (Masters Men)
#0 / 9891
Top 38%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:47/mi
24:10
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:51
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:11:10
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:34:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:39:49
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:58:22
↑ 66↓ 880.2%
30K· 18.64 mi
7:43/mi
2:22:22
↑ 181↓ 1480.2%
20M
7:46/mi
2:32:55
↑ 64↓ 500.2%
21M
7:59/mi
2:40:54
↑ 106↓ 241.6%
35K· 21.75 mi
7:16/mi
2:46:20
↑ 17↓ 861.7%
23M
7:29/mi
2:55:42
↑ 23↓ 630.6%
24M
7:19/mi
3:03:01
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:09:25
↓ 200.3%
25.2M
8:54/mi
3:12:29
↑ 13↓ 160.2%
Finish· 26.22 mi
7:45/mi
3:20:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:39:49
Pace7:37 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:34
Pace7:40 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5824:107:4724:10
7:47
-
10K
6.21 mi11:15:3947:517:4223:41
7:37
-0:10
15K
9.32 mi11:38:581:11:107:3823:19
7:30
-0:07
20K
12.43 mi12:02:281:34:407:3723:30
7:34
+0:04
Half
13.11 mi12:07:371:39:497:375:09
7:33
-0:01
25K
15.53 mi12:26:101:58:227:3718:33
7:39
+0:06
30K
18.64 mi12:50:102:22:227:3824:00
7:43
+0:04
20M
20.00 mi13:00:432:32:557:3910:33
7:46
+0:03
21M
21.00 mi13:08:422:40:547:407:59
7:59
+0:13
35K
21.75 mi13:14:082:46:207:395:26
7:16
-0:43
23M
23.00 mi13:23:302:55:427:389:22
7:29
+0:13
24M
24.00 mi13:30:493:03:017:387:19
7:19
-0:10
40K
24.85 mi13:37:133:09:257:376:24
7:29
+0:10
25.2M
25.20 mi13:40:173:12:297:383:04
8:54
+1:25
Finish
26.22 mi13:48:113:20:237:397:54
7:45
-1:09

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

7:16 /mi

Average Pace

7:39 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:45

6% of race

Time at Steady Pace

2:56:35

88% of race

Time at Slower Pace

11:03

6% of race

Average Pace: 7:39 /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 mi10:51:5824:107:4724:10
7:47
#12139
10K
6.21 mi11:15:3947:517:4223:41
7:37
#11808
15K
9.32 mi11:38:581:11:107:3823:19
7:30
#11241
20K
12.43 mi12:02:281:34:407:3723:30
7:34
#10847
Half
13.11 mi12:07:371:39:497:375:09
7:33
#10842
25K
15.53 mi12:26:101:58:227:3718:33
7:39
#10650
30K
18.64 mi12:50:102:22:227:3824:00
7:43
#10264
20M
20.00 mi13:00:432:32:557:3910:33
7:46
#10123
21M
21.00 mi13:08:422:40:547:407:59
7:59
#9905
35K
21.75 mi13:14:082:46:207:395:26
7:16
#9777
23M
23.00 mi13:23:302:55:427:389:22
7:29
#9522
24M
24.00 mi13:30:493:03:017:387:19
7:19
#9345
40K
24.85 mi13:37:133:09:257:376:24
7:29
#9211
25.2M
25.20 mi13:40:173:12:297:383:04
8:54
#9262
Finish
26.22 mi13:48:113:20:237:397:54
7:45
#9301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi121399171917110202(Top 38%)8250(Top 54%)8250(Top 366%)
10K6.21 mi3.10 mi11808+3319020+1519020+15111515(Top 43%)8885(Top 59%)8885(Top 395%)
15K9.32 mi3.11 mi11241+5678767+2538767+25310202(Top 38%)8250(Top 54%)8250(Top 366%)
20K12.43 mi3.11 mi10847+3948567+2008567+2009797(Top 37%)7958(Top 52%)7958(Top 353%)
Half13.11 mi0.68 mi10842+58565+28565+210531(Top 40%)8353(Top 55%)8353(Top 371%)
25K15.53 mi2.42 mi10650+1928460+1058460+1059898(Top 37%)7923(Top 52%)7923(Top 352%)
30K18.64 mi3.11 mi10264+3868219+2418219+2418825(Top 33%)7174(Top 47%)7174(Top 319%)
20M20.00 mi1.36 mi10123+1418125+948125+948574(Top 32%)6941(Top 46%)6941(Top 308%)
21M21.00 mi1.00 mi9905+2187987+1387987+1387257(Top 27%)6035(Top 40%)6035(Top 268%)
35K21.75 mi0.75 mi9777+1287907+807907+806915(Top 26%)5849(Top 39%)5849(Top 260%)
23M23.00 mi1.25 mi9522+2557734+1737734+1736325(Top 24%)5397(Top 36%)5397(Top 240%)
24M24.00 mi1.00 mi9345+1777602+1327602+1326496(Top 24%)5426(Top 36%)5426(Top 241%)
40K24.85 mi0.85 mi9211+1347492+1107492+1106635(Top 25%)5423(Top 36%)5423(Top 241%)
25.2M25.20 mi0.35 mi9262-517507-157507-1511798(Top 44%)8141(Top 54%)8141(Top 362%)
Finish26.22 mi1.02 mi9301-397509-27509-210292(Top 39%)7437(Top 49%)7437(Top 330%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10202

Males

8250

M45-49

8250

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11515

Males

8885

M45-49

8885

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10202

Males

8250

M45-49

8250

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9797

Males

7958

M45-49

7958

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10531

Males

8353

M45-49

8353

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9898

Males

7923

M45-49

7923

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

8825

Males

7174

M45-49

7174

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8574

Males

6941

M45-49

6941

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7257

Males

6035

M45-49

6035

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

6915

Males

5849

M45-49

5849

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6325

Males

5397

M45-49

5397

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6496

Males

5426

M45-49

5426

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6635

Males

5423

M45-49

5423

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11798

Males

8141

M45-49

8141

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10292

Males

7437

M45-49

7437

Passing Analysis

Category:
Athletes Passed
3337*
Passed By
499
Net Change
+2838
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12139
5K → 10K504173+331#12139#11808
10K → 15K59326+567#11808#11241
15K → 20K41319+394#11241#10847
20K → Half3429+5#10847#10842
Half → 25K22331+192#10842#10650
25K → 30K411*25+386#10650#10264
30K → 20M156*15+141#10264#10123
20M → 21M228*10+218#10123#9905
21M → 35K1302+128#9905#9777
35K → 23M2594+255#9777#9522
23M → 24M1825+177#9522#9345
24M → 40K15016+134#9345#9211
40K → 25.2M1162-51#9211#9262
25.2M → Finish4382-39#9262#9301
TOTALS3337*499+2838

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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