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BOSTON MARATHON 2023

Christopher Welch

MA

Bib: 26106 M

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
9:42/mi
30:09
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
10:02/mi
1:01:19
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
10:16/mi
1:33:13
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:33/mi
2:05:59
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:43/mi
2:12:37
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
11:13/mi
2:39:48
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
12:13/mi
3:17:46
↑ 181↓ 1480.2%
138 ft elev
20M
11:26/mi
3:33:18
↑ 64↓ 500.2%
148 ft elev
21M
12:09/mi
3:45:27
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:35/mi
3:53:22
↑ 17↓ 861.7%
156 ft elev
23M
11:44/mi
4:08:04
↑ 23↓ 630.6%
116 ft elev
24M
11:21/mi
4:19:25
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:17/mi
4:29:04
↓ 200.3%
20 ft elev
25.2M
12:31/mi
4:33:23
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:52/mi
4:43:26
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:37
Pace10:07 /mi
2nd Half
Distance13.11 mi
Time2:30:49
Pace11:30 /mi
📊Positive Split: 13.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:5930:099:4230:09
9:42
-
10K
6.21 mi12:25:091:01:199:5231:10
10:02
+0:20
15K
9.32 mi12:57:031:33:1310:0031:54
10:16
+0:14
20K
12.43 mi13:29:492:05:5910:0832:46
10:33
+0:17
Half
13.11 mi13:36:272:12:3710:076:38
9:43
-0:50
25K
15.53 mi14:03:382:39:4810:1727:11
11:13
+1:30
30K
18.64 mi14:41:363:17:4610:3737:58
12:13
+1:00
20M
20.00 mi14:57:083:33:1810:4015:32
11:26
-0:47
21M
21.00 mi15:09:173:45:2710:4412:09
12:09
+0:43
35K
21.75 mi15:17:123:53:2210:447:55
10:35
-1:34
23M
23.00 mi15:31:544:08:0410:4714:42
11:44
+1:09
24M
24.00 mi15:43:154:19:2510:4911:21
11:21
-0:23
40K
24.85 mi15:52:544:29:0410:509:39
11:17
-0:04
25.2M
25.20 mi15:57:134:33:2310:514:19
12:31
+1:14
Finish
26.22 mi16:07:164:43:2610:4910:03
9:52
-2:39

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

9:42 /mi

Average Pace

10:49 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:35

53% of race

Time at Steady Pace

1:03:43

22% of race

Time at Slower Pace

1:09:08

24% of race

Average Pace: 10:49 /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 mi11:53:5930:099:4230:09
9:42
#22669
10K
6.21 mi12:25:091:01:199:5231:10
10:02
#23320
15K
9.32 mi12:57:031:33:1310:0031:54
10:16
#23607
20K
12.43 mi13:29:492:05:5910:0832:46
10:33
#23715
Half
13.11 mi13:36:272:12:3710:076:38
9:43
#23659
25K
15.53 mi14:03:382:39:4810:1727:11
11:13
#23748
30K
18.64 mi14:41:363:17:4610:3737:58
12:13
#24006
20M
20.00 mi14:57:083:33:1810:4015:32
11:26
#23973
21M
21.00 mi15:09:173:45:2710:4412:09
12:09
#23923
35K
21.75 mi15:17:123:53:2210:447:55
10:35
#23882
23M
23.00 mi15:31:544:08:0410:4714:42
11:44
#23890
24M
24.00 mi15:43:154:19:2510:4911:21
11:21
#23881
40K
24.85 mi15:52:544:29:0410:509:39
11:17
#23846
25.2M
25.20 mi15:57:134:33:2310:514:19
12:31
#23837
Finish
26.22 mi16:07:164:43:2610:4910:03
9:52
#23777
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi226691342913429240181409814098
10K6.21 mi3.10 mi23320-65113762-33313762-333237501396913969
15K9.32 mi3.11 mi23607-28713909-14713909-147240181409814098
20K12.43 mi3.11 mi23715-10813966-5713966-57239101404214042
Half13.11 mi0.68 mi23659+5613937+2913937+29226991349913499
25K15.53 mi2.42 mi23748-8913963-2613963-26242861415714157
30K18.64 mi3.11 mi24006-25814061-9814061-98247281429214292
20M20.00 mi1.36 mi23973+3314042+1914042+19234051364613646
21M21.00 mi1.00 mi23923+5014006+3614006+36229711341713417
35K21.75 mi0.75 mi23882+4113980+2613980+26225301317113171
23M23.00 mi1.25 mi23890-813975+513975+5236281368913689
24M24.00 mi1.00 mi23881+913965+1013965+10236661366213662
40K24.85 mi0.85 mi23846+3513939+2613939+26228731325613256
25.2M25.20 mi0.35 mi23837+913935+413935+4233001345413454
Finish26.22 mi1.02 mi23777+6013898+3713898+37213491258512585

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

24018

Males

14098

M18-39

14098

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23750

Males

13969

M18-39

13969

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

24018

Males

14098

M18-39

14098

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

23910

Males

14042

M18-39

14042

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22699

Males

13499

M18-39

13499

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

24286

Males

14157

M18-39

14157

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24728

Males

14292

M18-39

14292

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23405

Males

13646

M18-39

13646

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

22971

Males

13417

M18-39

13417

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22530

Males

13171

M18-39

13171

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23628

Males

13689

M18-39

13689

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23666

Males

13662

M18-39

13662

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22873

Males

13256

M18-39

13256

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23300

Males

13454

M18-39

13454

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

21349

Males

12585

M18-39

12585

Passing Analysis

Category:
Athletes Passed
690
Passed By
1798
Net Change
-1108
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22669
5K → 10K37688-651#22669#23320
10K → 15K45332-287#23320#23607
15K → 20K79187-108#23607#23715
20K → Half571+56#23715#23659
Half → 25K54143-89#23659#23748
25K → 30K39297-258#23748#24006
30K → 20M6330+33#24006#23973
20M → 21M6919+50#23973#23923
21M → 35K498+41#23923#23882
35K → 23M3745-8#23882#23890
23M → 24M3627+9#23890#23881
24M → 40K4813+35#23881#23846
40K → 25.2M167+9#23846#23837
25.2M → Finish611+60#23837#23777
TOTALS6901798-1108

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