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BOSTON MARATHON 2023

Kun Xie

QC

Bib: 12363 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 34%
Gender (Male)
#0 / 15176
Top 49%
Masters (Masters Men)
#0 / 9891
Top 37%
Division (M50-54)
#0 / 2052
Top 35%
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
7:22/mi
22:52
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:00/mi
44:36
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:10/mi
1:06:53
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:27/mi
1:30:01
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:18/mi
1:35:00
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:37/mi
1:53:27
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:47/mi
2:17:38
↑ 181↓ 1480.2%
138 ft elev
20M
8:06/mi
2:28:38
↑ 64↓ 500.2%
148 ft elev
21M
8:33/mi
2:37:11
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:53/mi
2:43:05
↑ 17↓ 861.7%
156 ft elev
23M
8:24/mi
2:53:36
↑ 23↓ 630.6%
116 ft elev
24M
7:58/mi
3:01:34
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:05/mi
3:08:29
↓ 200.3%
20 ft elev
25.2M
8:51/mi
3:11:32
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:03/mi
3:19:44
↑ 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
1:35:007:15 /mi⚡ faster
2nd Half
1:44:447:59 /mi+10.2%
Positive split — 10.2% 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
22:527:223.11 mi22:52
7:22
-
10K
44:367:113.10 mi21:44
7:00
-0:22
15K
1:06:537:113.11 mi22:17
7:10
+0:10
20K
1:30:017:153.11 mi23:08
7:27
+0:17
Half(13.11 mi)
1:35:007:150.68 mi4:59
7:18
-0:09
25K
1:53:277:182.42 mi18:27
7:37
+0:19
30K
2:17:387:233.11 mi24:11
7:47
+0:10
20M
2:28:387:261.36 mi11:00
8:06
+0:19
21M
2:37:117:291.00 mi8:33
8:33
+0:27
35K
2:43:057:300.75 mi5:54
7:53
-0:40
23M
2:53:367:331.25 mi10:31
8:24
+0:31
24M
3:01:347:341.00 mi7:58
7:58
-0:26
40K
3:08:297:350.85 mi6:55
8:05
+0:07
25.2M
3:11:327:360.35 mi3:03
8:51
+0:46
Finish(26.22 mi)
3:19:447:371.02 mi8:12
8:03
-0:48
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:00 /mi

Average Pace

7:37 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:53:27

57% of race

Time at Steady Pace

1:04:10

32% of race

Time at Slower Pace

22:07

11% of race

Average Pace: 7:37 /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 mi850773077307761066716671
10K3.10 mi7616+8916718+5896718+589679660896089
15K3.11 mi7586+306679+396679+39761066716671
20K3.11 mi7856-2706847-1686847-168887274257425
Half(13.11 mi)0.68 mi7882-266861-146861-14861872827282
25K2.42 mi8094-2126972-1116972-111959977597759
30K3.11 mi8242-1487027-557027-55922674097409
20M1.36 mi8411-1697113-867113-861095082228222
21M1.00 mi8537-1267176-637176-631073279737973
35K0.75 mi8629-927225-497225-491123482168216
23M1.25 mi8838-2097323-987323-981254386988698
24M1.00 mi8900-627330-77330-71097078747874
40K0.85 mi8945-457344-147344-141061276537653
25.2M0.35 mi8980-357359-157359-151150080148014
Finish(26.22 mi)1.02 mi9115-1357407-487407-481240084688468

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7610

Males

6671

M50-54

6671

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

6796

Males

6089

M50-54

6089

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7610

Males

6671

M50-54

6671

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8872

Males

7425

M50-54

7425

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8618

Males

7282

M50-54

7282

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9599

Males

7759

M50-54

7759

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9226

Males

7409

M50-54

7409

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10950

Males

8222

M50-54

8222

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10732

Males

7973

M50-54

7973

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11234

Males

8216

M50-54

8216

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12543

Males

8698

M50-54

8698

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10970

Males

7874

M50-54

7874

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10612

Males

7653

M50-54

7653

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11500

Males

8014

M50-54

8014

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12400

Males

8468

M50-54

8468

Passing Analysis

Category:
Passed
1525
Passed By
2133
Net Change
-608
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8507
5K → 10K91827+891#8507#7616
10K → 15K144114+30#7616#7586
15K → 20K51321-270#7586#7856
20K → Half1137-26#7856#7882
Half → 25K46258-212#7882#8094
25K → 30K94242-148#8094#8242
30K → 20M40209-169#8242#8411
20M → 21M42168-126#8411#8537
21M → 35K16108-92#8537#8629
35K → 23M31240-209#8629#8838
23M → 24M50112-62#8838#8900
24M → 40K3883-45#8900#8945
40K → 25.2M1853-35#8945#8980
25.2M → Finish26161-135#8980#9115
TOTALS15252133-608

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