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BOSTON MARATHON 2023

Xuejun Deng

Bib: 13539•M

CA

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 43%
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
7:43/mi
23:58
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
47:11
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:10:28
↑ 67↓ 78
20K· 12.43 mi
7:33/mi
1:33:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:39:05
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:57:28
↑ 66↓ 880.2%
30K· 18.64 mi
7:55/mi
2:22:05
↑ 181↓ 1480.2%
20M
8:05/mi
2:33:04
↑ 64↓ 500.2%
21M
8:38/mi
2:41:42
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:47:30
↑ 17↓ 861.7%
23M
8:02/mi
2:57:34
↑ 23↓ 630.6%
24M
7:50/mi
3:05:24
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:12:30
↓ 200.3%
25.2M
9:05/mi
3:15:38
↑ 13↓ 160.2%
Finish· 26.22 mi
8:14/mi
3:24:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:05
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:44:56
Pace8:00 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1723:587:4323:58
7:43
-
10K
6.21 mi11:15:3047:117:3623:13
7:28
-0:15
15K
9.32 mi11:38:471:10:287:3423:17
7:30
+0:02
20K
12.43 mi12:02:151:33:567:3423:28
7:33
+0:03
Half
13.11 mi12:07:241:39:057:335:09
7:33
0:00
25K
15.53 mi12:25:471:57:287:3418:23
7:35
+0:02
30K
18.64 mi12:50:242:22:057:3724:37
7:55
+0:20
20M
20.00 mi13:01:232:33:047:3910:59
8:05
+0:10
21M
21.00 mi13:10:012:41:427:428:38
8:38
+0:33
35K
21.75 mi13:15:492:47:307:425:48
7:45
-0:53
23M
23.00 mi13:25:532:57:347:4310:04
8:02
+0:17
24M
24.00 mi13:33:433:05:247:447:50
7:50
-0:12
40K
24.85 mi13:40:493:12:307:457:06
8:18
+0:28
25.2M
25.20 mi13:43:573:15:387:463:08
9:05
+0:47
Finish
26.22 mi13:52:203:24:017:478:23
8:14
-0:51

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

7:28 /mi

Average Pace

7:47 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:30

46% of race

Time at Steady Pace

1:12:17

35% of race

Time at Slower Pace

38:14

19% 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 mi10:52:1723:587:4323:58
7:43
#11560
10K
6.21 mi11:15:3047:117:3623:13
7:28
#10852
15K
9.32 mi11:38:471:10:287:3423:17
7:30
#10586
20K
12.43 mi12:02:151:33:567:3423:28
7:33
#10334
Half
13.11 mi12:07:241:39:057:335:09
7:33
#10350
25K
15.53 mi12:25:471:57:287:3418:23
7:35
#10158
30K
18.64 mi12:50:242:22:057:3724:37
7:55
#10146
20M
20.00 mi13:01:232:33:047:3910:59
8:05
#10187
21M
21.00 mi13:10:012:41:427:428:38
8:38
#10215
35K
21.75 mi13:15:492:47:307:425:48
7:45
#10210
23M
23.00 mi13:25:532:57:347:4310:04
8:02
#10174
24M
24.00 mi13:33:433:05:247:447:50
7:50
#10139
40K
24.85 mi13:40:493:12:307:457:06
8:18
#10179
25.2M
25.20 mi13:43:573:15:387:463:08
9:05
#10230
Finish
26.22 mi13:52:203:24:017:478:23
8:14
#10354
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi115608922892210122(Top 38%)8209(Top 54%)8209(Top 400%)
10K6.21 mi3.10 mi10852+7088585+3378585+33710231(Top 38%)8293(Top 55%)8293(Top 404%)
15K9.32 mi3.11 mi10586+2668459+1268459+12610122(Top 38%)8209(Top 54%)8209(Top 400%)
20K12.43 mi3.11 mi10334+2528327+1328327+1329722(Top 37%)7918(Top 52%)7918(Top 386%)
Half13.11 mi0.68 mi10350-168335-88335-810559(Top 40%)8381(Top 55%)8381(Top 408%)
25K15.53 mi2.42 mi10158+1928215+1208215+1209400(Top 35%)7666(Top 51%)7666(Top 374%)
30K18.64 mi3.11 mi10146+128169+468169+4610307(Top 39%)7985(Top 53%)7985(Top 389%)
20M20.00 mi1.36 mi10187-418153+168153+1610860(Top 41%)8176(Top 54%)8176(Top 398%)
21M21.00 mi1.00 mi10215-288150+38150+311231(Top 42%)8221(Top 54%)8221(Top 401%)
35K21.75 mi0.75 mi10210+58134+168134+1610275(Top 39%)7768(Top 51%)7768(Top 379%)
23M23.00 mi1.25 mi10174+368074+608074+6010021(Top 38%)7490(Top 49%)7490(Top 365%)
24M24.00 mi1.00 mi10139+358031+438031+4310015(Top 38%)7396(Top 49%)7396(Top 360%)
40K24.85 mi0.85 mi10179-408028+38028+312024(Top 45%)8321(Top 55%)8321(Top 406%)
25.2M25.20 mi0.35 mi10230-518038-108038-1012936(Top 49%)8716(Top 57%)8716(Top 425%)
Finish26.22 mi1.02 mi10354-1248065-278065-2713581(Top 51%)9040(Top 60%)9040(Top 441%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10122

Males

8209

M50-54

8209

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10231

Males

8293

M50-54

8293

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10122

Males

8209

M50-54

8209

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9722

Males

7918

M50-54

7918

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10559

Males

8381

M50-54

8381

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9400

Males

7666

M50-54

7666

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

10307

Males

7985

M50-54

7985

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10860

Males

8176

M50-54

8176

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11231

Males

8221

M50-54

8221

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10275

Males

7768

M50-54

7768

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10021

Males

7490

M50-54

7490

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10015

Males

7396

M50-54

7396

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12024

Males

8321

M50-54

8321

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

12936

Males

8716

M50-54

8716

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13581

Males

9040

M50-54

9040

Passing Analysis

Category:
Athletes Passed
2333*
Passed By
1127
Net Change
+1206
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11560
5K → 10K78274+708#11560#10852
10K → 15K35084+266#10852#10586
15K → 20K291*39+252#10586#10334
20K → Half2036-16#10334#10350
Half → 25K23947+192#10350#10158
25K → 30K168*156+12#10158#10146
30K → 20M64*105-41#10146#10187
20M → 21M76104-28#10187#10215
21M → 35K5045+5#10215#10210
35K → 23M9963+36#10210#10174
23M → 24M8550+35#10174#10139
24M → 40K5696-40#10139#10179
40K → 25.2M14*65-51#10179#10230
25.2M → Finish39163-124#10230#10354
TOTALS2333*1127+1206

* 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