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BOSTON MARATHON 2023

Brian Welch

Bib: 6679•M

DE

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 45%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:10
Rank: #9258
Start → 5K
23:10 | 7:27/mi
10K· 6.21 mi
46:03
Rank: #9256 (+2)
5K → 10K
22:53 | 7:22/mi
15K· 9.32 mi
1:09:23
Rank: #9560 (-304)
10K → 15K
23:20 | 7:31/mi
20K· 12.43 mi
1:32:25
Rank: #9287 (+273)
15K → 20K
23:02 | 7:25/mi
Half· 13.11 mi
1:37:32
Rank: #9342 (-55)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:55:55
Rank: #9323 (+19)
Half → 25K
18:23 | 7:35/mi
30K· 18.64 mi
2:20:05
Rank: #9264 (+59)
25K → 30K
24:10 | 7:47/mi
20M
2:30:34
Rank: #9176 (+88)
30K → 20M
10:29 | 7:43/mi
21M
2:38:31
Rank: #9016 (+160)
20M → 21M
7:57 | 7:57/mi
35K· 21.75 mi
2:43:49
Rank: #8876 (+140)
21M → 35K
5:18 | 7:05/mi
23M
2:53:09
Rank: #8694 (+182)
35K → 23M
9:20 | 7:27/mi
24M
3:00:18
Rank: #8492 (+202)
23M → 24M
7:09 | 7:09/mi
40K· 24.85 mi
3:06:27
Rank: #8318 (+174)
24M → 40K
6:09 | 7:12/mi
25.2M
3:09:04
Rank: #8239 (+79)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:16:09
Rank: #8067 (+172)
25.2M → Finish
7:05 | 6:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:32
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:38:37
Pace7:31 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:3123:107:2723:10
7:27
-
10K
6.21 mi10:49:2446:037:2522:53
7:22
-0:05
15K
9.32 mi11:12:441:09:237:2723:20
7:31
+0:09
20K
12.43 mi11:35:461:32:257:2623:02
7:25
-0:06
Half
13.11 mi11:40:531:37:327:265:07
7:30
+0:05
25K
15.53 mi11:59:161:55:557:2818:23
7:35
+0:05
30K
18.64 mi12:23:262:20:057:3124:10
7:47
+0:12
20M
20.00 mi12:33:552:30:347:3210:29
7:43
-0:04
21M
21.00 mi12:41:522:38:317:337:57
7:57
+0:14
35K
21.75 mi12:47:102:43:497:325:18
7:05
-0:52
23M
23.00 mi12:56:302:53:097:329:20
7:27
+0:22
24M
24.00 mi13:03:393:00:187:317:09
7:09
-0:18
40K
24.85 mi13:09:483:06:277:306:09
7:12
+0:03
25.2M
25.20 mi13:12:253:09:047:302:37
7:35
+0:23
Finish
26.22 mi13:19:303:16:097:297:05
6:57
-0:38

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

6:57 /mi

Average Pace

7:29 /mi

Slowest Pace

7:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:33

78% of race

Time at Steady Pace

42:36

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:26:3123:107:2723:10
7:27
#9258
10K
6.21 mi10:49:2446:037:2522:53
7:22
#9256
15K
9.32 mi11:12:441:09:237:2723:20
7:31
#9560
20K
12.43 mi11:35:461:32:257:2623:02
7:25
#9287
Half
13.11 mi11:40:531:37:327:265:07
7:30
#9342
25K
15.53 mi11:59:161:55:557:2818:23
7:35
#9323
30K
18.64 mi12:23:262:20:057:3124:10
7:47
#9264
20M
20.00 mi12:33:552:30:347:3210:29
7:43
#9176
21M
21.00 mi12:41:522:38:317:337:57
7:57
#9016
35K
21.75 mi12:47:102:43:497:325:18
7:05
#8876
23M
23.00 mi12:56:302:53:097:329:20
7:27
#8694
24M
24.00 mi13:03:393:00:187:317:09
7:09
#8492
40K
24.85 mi13:09:483:06:277:306:09
7:12
#8318
25.2M
25.20 mi13:12:253:09:047:302:37
7:35
#8239
Finish
26.22 mi13:19:303:16:097:297:05
6:57
#8067
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi92587734773410241(Top 38%)8266(Top 54%)8266(Top 156%)
10K6.21 mi3.10 mi9256+27727+77727+79343(Top 35%)7767(Top 51%)7767(Top 147%)
15K9.32 mi3.11 mi9560-3047905-1787905-17810241(Top 38%)8266(Top 54%)8266(Top 156%)
20K12.43 mi3.11 mi9287+2737720+1857720+1858601(Top 32%)7255(Top 48%)7255(Top 137%)
Half13.11 mi0.68 mi9342-557755-357755-3510145(Top 38%)8157(Top 54%)8157(Top 154%)
25K15.53 mi2.42 mi9323+197739+167739+169381(Top 35%)7647(Top 50%)7647(Top 145%)
30K18.64 mi3.11 mi9264+597663+767663+769178(Top 34%)7371(Top 49%)7371(Top 139%)
20M20.00 mi1.36 mi9176+887590+737590+738274(Top 31%)6759(Top 45%)6759(Top 128%)
21M21.00 mi1.00 mi9016+1607467+1237467+1237022(Top 26%)5878(Top 39%)5878(Top 111%)
35K21.75 mi0.75 mi8876+1407377+907377+905837(Top 22%)5127(Top 34%)5127(Top 97%)
23M23.00 mi1.25 mi8694+1827235+1427235+1426178(Top 23%)5307(Top 35%)5307(Top 100%)
24M24.00 mi1.00 mi8492+2027094+1417094+1415480(Top 21%)4769(Top 31%)4769(Top 90%)
40K24.85 mi0.85 mi8318+1746966+1286966+1284862(Top 18%)4262(Top 28%)4262(Top 81%)
25.2M25.20 mi0.35 mi8239+796902+646902+644360(Top 16%)3830(Top 25%)3830(Top 72%)
Finish26.22 mi1.02 mi8067+1726781+1216781+1214935(Top 19%)4232(Top 28%)4232(Top 80%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10241

Males

8266

M18-39

8266

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9343

Males

7767

M18-39

7767

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10241

Males

8266

M18-39

8266

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8601

Males

7255

M18-39

7255

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10145

Males

8157

M18-39

8157

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9381

Males

7647

M18-39

7647

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9178

Males

7371

M18-39

7371

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8274

Males

6759

M18-39

6759

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7022

Males

5878

M18-39

5878

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5837

Males

5127

M18-39

5127

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6178

Males

5307

M18-39

5307

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5480

Males

4769

M18-39

4769

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4862

Males

4262

M18-39

4262

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4360

Males

3830

M18-39

3830

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

4935

Males

4232

M18-39

4232

Passing Analysis

Category:
Athletes Passed
2248*
Passed By
1057
Net Change
+1191
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9258
5K → 10K262260+2#9258#9256
10K → 15K80384-304#9256#9560
15K → 20K30835+273#9560#9287
20K → Half1065-55#9287#9342
Half → 25K121102+19#9342#9323
25K → 30K197*138+59#9323#9264
30K → 20M12436+88#9264#9176
20M → 21M17313+160#9176#9016
21M → 35K1411+140#9016#8876
35K → 23M1886+182#8876#8694
23M → 24M2064+202#8694#8492
24M → 40K1795+174#8492#8318
40K → 25.2M790+79#8318#8239
25.2M → Finish1808+172#8239#8067
TOTALS2248*1057+1191

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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