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BOSTON MARATHON 2023

Yulin Ma

CT

Bib: 31876 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 48%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:04/mi
25:05
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:56/mi
49:44
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:50/mi
1:14:05
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:53/mi
1:38:35
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:48/mi
1:43:54
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:05/mi
2:03:30
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:17/mi
2:29:14
↑ 181↓ 1480.2%
138 ft elev
20M
8:15/mi
2:40:26
↑ 64↓ 500.2%
148 ft elev
21M
8:42/mi
2:49:08
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:49/mi
2:54:59
↑ 17↓ 861.7%
156 ft elev
23M
8:17/mi
3:05:21
↑ 23↓ 630.6%
116 ft elev
24M
8:13/mi
3:13:34
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:16/mi
3:20:38
↓ 200.3%
20 ft elev
25.2M
8:48/mi
3:23:40
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:44/mi
3:31:33
↑ 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
1:43:547:56 /mi⚡ faster
2nd Half
1:47:398:13 /mi+3.6%
Positive split — 3.6% 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
25:058:043.11 mi25:05
8:04
-
10K
49:448:003.10 mi24:39
7:56
-0:08
15K
1:14:057:573.11 mi24:21
7:50
-0:06
20K
1:38:357:563.11 mi24:30
7:53
+0:03
Half(13.11 mi)
1:43:547:560.68 mi5:19
7:48
-0:05
25K
2:03:307:572.42 mi19:36
8:05
+0:17
30K
2:29:148:003.11 mi25:44
8:17
+0:12
20M
2:40:268:011.36 mi11:12
8:15
-0:02
21M
2:49:088:031.00 mi8:42
8:42
+0:27
35K
2:54:598:030.75 mi5:51
7:49
-0:53
23M
3:05:218:041.25 mi10:22
8:17
+0:28
24M
3:13:348:041.00 mi8:13
8:13
-0:04
40K
3:20:388:040.85 mi7:04
8:16
+0:03
25.2M
3:23:408:050.35 mi3:02
8:48
+0:32
Finish(26.22 mi)
3:31:338:041.02 mi7:53
7:44
-1:04
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:44 /mi

Average Pace

8:04 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:19:49

94% of race

Time at Steady Pace

11:44

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi1450110152101521302095149514
10K3.10 mi14410+9110099+5310099+53142581002510025
15K3.11 mi13958+4529904+1959904+1951302095149514
20K3.11 mi13566+3929726+1789726+1781249192259225
Half(13.11 mi)0.68 mi13521+459709+179709+171260093259325
25K2.42 mi13469+529665+449665+441338495139513
30K3.11 mi13338+1319574+919574+911290591909190
20M1.36 mi13217+1219507+679507+671195186918691
21M1.00 mi13077+1409435+729435+721165384208420
35K0.75 mi12981+969368+679368+671079080138013
23M1.25 mi12899+829309+599309+591173483528352
24M1.00 mi12875+249282+279282+271271087258725
40K0.85 mi12829+469243+399243+391178082218221
25.2M0.35 mi12799+309226+179226+171127279357935
Finish(26.22 mi)1.02 mi12692+1079160+669160+661020274027402

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13020

Males

9514

M50-54

9514

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

14258

Males

10025

M50-54

10025

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13020

Males

9514

M50-54

9514

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12491

Males

9225

M50-54

9225

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12600

Males

9325

M50-54

9325

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13384

Males

9513

M50-54

9513

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12905

Males

9190

M50-54

9190

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

11951

Males

8691

M50-54

8691

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11653

Males

8420

M50-54

8420

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10790

Males

8013

M50-54

8013

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11734

Males

8352

M50-54

8352

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12710

Males

8725

M50-54

8725

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11780

Males

8221

M50-54

8221

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11272

Males

7935

M50-54

7935

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10202

Males

7402

M50-54

7402

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#14501
5K → 10K
250341+91
#14501 → #14410
10K → 15K
45497+452
#14410 → #13958
15K → 20K
27419+392
#13958 → #13566
20K → Half
1459+45
#13566 → #13521
Half → 25K
106158+52
#13521 → #13469
25K → 30K
121252+131
#13469 → #13338
30K → 20M
31152+121
#13338 → #13217
20M → 21M
28168+140
#13217 → #13077
21M → 35K
11107+96
#13077 → #12981
35K → 23M
40122+82
#12981 → #12899
23M → 24M
6185+24
#12899 → #12875
24M → 40K
3783+46
#12875 → #12829
40K → 25.2M
1343+30
#12829 → #12799
25.2M → Finish
20127+107
#12799 → #12692
TOTALS
8042613+1809
#14501 → #12692

Passing Visualized

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