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BOSTON MARATHON 2023

Xu Dong Wu

Bib: 11382•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 43%
Division (M50-54)
#0 / 2052
Top 44%
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
7:29/mi
23:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:31/mi
1:09:36
↑ 67↓ 78
20K· 12.43 mi
7:42/mi
1:33:32
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:38:52
↑ 19↓ 370.5%
25K· 15.53 mi
7:53/mi
1:57:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:23:03
↑ 181↓ 1480.2%
20M
8:09/mi
2:34:08
↑ 64↓ 500.2%
21M
8:41/mi
2:42:49
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:48:43
↑ 17↓ 861.7%
23M
8:02/mi
2:58:47
↑ 23↓ 630.6%
24M
7:47/mi
3:06:34
↓ 821.3%
40K· 24.85 mi
8:04/mi
3:13:28
↓ 200.3%
25.2M
8:27/mi
3:16:23
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:24:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:52
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:45:14
Pace8:02 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0223:157:2923:15
7:29
-
10K
6.21 mi11:13:0346:167:2723:01
7:25
-0:04
15K
9.32 mi11:36:231:09:367:2823:20
7:31
+0:06
20K
12.43 mi12:00:191:33:327:3223:56
7:42
+0:11
Half
13.11 mi12:05:391:38:527:325:20
7:49
+0:07
25K
15.53 mi12:24:461:57:597:3619:07
7:53
+0:04
30K
18.64 mi12:49:502:23:037:4025:04
8:04
+0:11
20M
20.00 mi13:00:552:34:087:4211:05
8:09
+0:05
21M
21.00 mi13:09:362:42:497:458:41
8:41
+0:32
35K
21.75 mi13:15:302:48:437:455:54
7:53
-0:48
23M
23.00 mi13:25:342:58:477:4610:04
8:02
+0:09
24M
24.00 mi13:33:213:06:347:467:47
7:47
-0:15
40K
24.85 mi13:40:153:13:287:476:54
8:04
+0:17
25.2M
25.20 mi13:43:103:16:237:482:55
8:27
+0:23
Finish
26.22 mi13:50:533:24:067:477:43
7:34
-0:53

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

7:25 /mi

Average Pace

7:47 /mi

Slowest Pace

8:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:30

94% of race

Time at Steady Pace

11:36

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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 mi10:50:0223:157:2923:15
7:29
#9483
10K
6.21 mi11:13:0346:167:2723:01
7:25
#9546
15K
9.32 mi11:36:231:09:367:2823:20
7:31
#9761
20K
12.43 mi12:00:191:33:327:3223:56
7:42
#10059
Half
13.11 mi12:05:391:38:527:325:20
7:49
#10210
25K
15.53 mi12:24:461:57:597:3619:07
7:53
#10440
30K
18.64 mi12:49:502:23:037:4025:04
8:04
#10560
20M
20.00 mi13:00:552:34:087:4211:05
8:09
#10607
21M
21.00 mi13:09:362:42:497:458:41
8:41
#10639
35K
21.75 mi13:15:302:48:437:455:54
7:53
#10633
23M
23.00 mi13:25:342:58:477:4610:04
8:02
#10587
24M
24.00 mi13:33:213:06:347:467:47
7:47
#10525
40K
24.85 mi13:40:153:13:287:476:54
8:04
#10508
25.2M
25.20 mi13:43:103:16:237:482:55
8:27
#10483
Finish
26.22 mi13:50:533:24:067:477:43
7:34
#10386
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi94837862786210251(Top 39%)8276(Top 55%)8276(Top 403%)
10K6.21 mi3.10 mi9546-637904-427904-429694(Top 36%)7990(Top 53%)7990(Top 389%)
15K9.32 mi3.11 mi9761-2158016-1128016-11210251(Top 39%)8276(Top 55%)8276(Top 403%)
20K12.43 mi3.11 mi10059-2988189-1738189-17310936(Top 41%)8543(Top 56%)8543(Top 416%)
Half13.11 mi0.68 mi10210-1518263-748263-7412791(Top 48%)9384(Top 62%)9384(Top 457%)
25K15.53 mi2.42 mi10440-2308359-968359-9611779(Top 44%)8813(Top 58%)8813(Top 429%)
30K18.64 mi3.11 mi10560-1208361-28361-211412(Top 43%)8539(Top 56%)8539(Top 416%)
20M20.00 mi1.36 mi10607-478364-38364-311367(Top 43%)8429(Top 56%)8429(Top 411%)
21M21.00 mi1.00 mi10639-328355+98355+911536(Top 43%)8355(Top 55%)8355(Top 407%)
35K21.75 mi0.75 mi10633+68328+278328+2711254(Top 42%)8236(Top 54%)8236(Top 401%)
23M23.00 mi1.25 mi10587+468273+558273+5510023(Top 38%)7492(Top 49%)7492(Top 365%)
24M24.00 mi1.00 mi10525+628213+608213+609639(Top 36%)7218(Top 48%)7218(Top 352%)
40K24.85 mi0.85 mi10508+178176+378176+3710479(Top 39%)7591(Top 50%)7591(Top 370%)
25.2M25.20 mi0.35 mi10483+258158+188158+189214(Top 35%)6874(Top 45%)6874(Top 335%)
Finish26.22 mi1.02 mi10386+978083+758083+759083(Top 34%)6800(Top 45%)6800(Top 331%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10251

Males

8276

M50-54

8276

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9694

Males

7990

M50-54

7990

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10251

Males

8276

M50-54

8276

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10936

Males

8543

M50-54

8543

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12791

Males

9384

M50-54

9384

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

11779

Males

8813

M50-54

8813

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11412

Males

8539

M50-54

8539

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11367

Males

8429

M50-54

8429

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

11536

Males

8355

M50-54

8355

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11254

Males

8236

M50-54

8236

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10023

Males

7492

M50-54

7492

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9639

Males

7218

M50-54

7218

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10479

Males

7591

M50-54

7591

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9214

Males

6874

M50-54

6874

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9083

Males

6800

M50-54

6800

Passing Analysis

Category:
Athletes Passed
1289*
Passed By
2191
Net Change
-903
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9483
5K → 10K258321-63#9483#9546
10K → 15K95310-215#9546#9761
15K → 20K82380-298#9761#10059
20K → Half6156-151#10059#10210
Half → 25K75305-230#10210#10440
25K → 30K133253-120#10440#10560
30K → 20M64*111-47#10560#10607
20M → 21M6496-32#10607#10639
21M → 35K5953+6#10639#10633
35K → 23M10559+46#10633#10587
23M → 24M10038+62#10587#10525
24M → 40K7659+17#10525#10508
40K → 25.2M4116+25#10508#10483
25.2M → Finish13134+97#10483#10386
TOTALS1289*2191-903

* 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