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BOSTON MARATHON 2023

Colin Welk

Bib: 1784•M

OR

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 7%
Division (M18-39)
#0 / 5285
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:19
Rank: #526
Start → 5K
18:19 | 5:54/mi
10K· 6.21 mi
36:34
Rank: #527 (-1)
5K → 10K
18:15 | 5:52/mi
15K· 9.32 mi
55:29
Rank: #625 (-98)
10K → 15K
18:55 | 6:05/mi
20K· 12.43 mi
1:14:28
Rank: #654 (-29)
15K → 20K
18:59 | 6:07/mi
Half· 13.11 mi
1:18:32
Rank: #653 (+1)
20K → Half
4:04 | 5:58/mi
25K· 15.53 mi
1:33:27
Rank: #672 (-19)
Half → 25K
14:55 | 6:09/mi
30K· 18.64 mi
1:53:18
Rank: #731 (-59)
25K → 30K
19:51 | 6:23/mi
20M
2:02:06
Rank: #760 (-29)
30K → 20M
8:48 | 6:29/mi
21M
2:08:55
Rank: #777 (-17)
20M → 21M
6:49 | 6:49/mi
35K· 21.75 mi
2:13:25
Rank: #771 (+6)
21M → 35K
4:30 | 6:01/mi
23M
2:21:37
Rank: #777 (-6)
35K → 23M
8:12 | 6:33/mi
24M
2:28:02
Rank: #800 (-23)
23M → 24M
6:25 | 6:25/mi
40K· 24.85 mi
2:34:13
Rank: #856 (-56)
24M → 40K
6:11 | 7:14/mi
25.2M
2:37:22
Rank: #927 (-71)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
2:44:59
Rank: #1078 (-151)
25.2M → Finish
7:37 | 7:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:32
Pace5:59 /mi
2nd Half
Distance13.11 mi
Time1:26:27
Pace6:36 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5818:195:5418:19
5:54
-
10K
6.21 mi10:37:1336:345:5318:15
5:52
-0:02
15K
9.32 mi10:56:0855:295:5718:55
6:05
+0:13
20K
12.43 mi11:15:071:14:286:0018:59
6:07
+0:02
Half
13.11 mi11:19:111:18:325:594:04
5:58
-0:09
25K
15.53 mi11:34:061:33:276:0114:55
6:09
+0:11
30K
18.64 mi11:53:571:53:186:0519:51
6:23
+0:14
20M
20.00 mi12:02:452:02:066:068:48
6:29
+0:06
21M
21.00 mi12:09:342:08:556:086:49
6:49
+0:20
35K
21.75 mi12:14:042:13:256:084:30
6:01
-0:48
23M
23.00 mi12:22:162:21:376:098:12
6:33
+0:32
24M
24.00 mi12:28:412:28:026:106:25
6:25
-0:08
40K
24.85 mi12:34:522:34:136:126:11
7:14
+0:49
25.2M
25.20 mi12:38:012:37:226:153:09
9:08
+1:54
Finish
26.22 mi12:45:382:44:596:187:37
7:28
-1:40

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

5:52 /mi

Average Pace

6:18 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

40:38

25% of race

Time at Steady Pace

1:40:35

61% of race

Time at Slower Pace

23:46

14% of race

Average Pace: 6:18 /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 mi10:18:5818:195:5418:19
5:54
#526
10K
6.21 mi10:37:1336:345:5318:15
5:52
#527
15K
9.32 mi10:56:0855:295:5718:55
6:05
#625
20K
12.43 mi11:15:071:14:286:0018:59
6:07
#654
Half
13.11 mi11:19:111:18:325:594:04
5:58
#653
25K
15.53 mi11:34:061:33:276:0114:55
6:09
#672
30K
18.64 mi11:53:571:53:186:0519:51
6:23
#731
20M
20.00 mi12:02:452:02:066:068:48
6:29
#760
21M
21.00 mi12:09:342:08:556:086:49
6:49
#777
35K
21.75 mi12:14:042:13:256:084:30
6:01
#771
23M
23.00 mi12:22:162:21:376:098:12
6:33
#777
24M
24.00 mi12:28:412:28:026:106:25
6:25
#800
40K
24.85 mi12:34:522:34:136:126:11
7:14
#856
25.2M
25.20 mi12:38:012:37:226:153:09
9:08
#927
Finish
26.22 mi12:45:382:44:596:187:37
7:28
#1078
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi526484484937(Top 4%)888(Top 6%)888(Top 17%)
10K6.21 mi3.10 mi527-1485-1485-1549(Top 2%)507(Top 3%)507(Top 10%)
15K9.32 mi3.11 mi625-98582-97582-97937(Top 4%)888(Top 6%)888(Top 17%)
20K12.43 mi3.11 mi654-29611-29611-29811(Top 3%)767(Top 5%)767(Top 15%)
Half13.11 mi0.68 mi653+1610+1610+1686(Top 3%)646(Top 4%)646(Top 12%)
25K15.53 mi2.42 mi672-19631-21631-21873(Top 3%)827(Top 5%)827(Top 16%)
30K18.64 mi3.11 mi731-59689-58689-581177(Top 4%)1122(Top 7%)1122(Top 21%)
20M20.00 mi1.36 mi760-29718-29718-291346(Top 5%)1283(Top 8%)1283(Top 24%)
21M21.00 mi1.00 mi777-17734-16734-161436(Top 5%)1368(Top 9%)1368(Top 26%)
35K21.75 mi0.75 mi771+6728+6728+6729(Top 3%)689(Top 5%)689(Top 13%)
23M23.00 mi1.25 mi777-6734-6734-61585(Top 6%)1505(Top 10%)1505(Top 28%)
24M24.00 mi1.00 mi800-23756-22756-221717(Top 6%)1618(Top 11%)1618(Top 31%)
40K24.85 mi0.85 mi856-56810-54810-545013(Top 19%)4343(Top 29%)4343(Top 82%)
25.2M25.20 mi0.35 mi927-71880-70880-7013150(Top 49%)8791(Top 58%)8791(Top 166%)
Finish26.22 mi1.02 mi1078-1511027-1471027-1478304(Top 31%)6320(Top 42%)6320(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

937

Males

888

M18-39

888

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

549

Males

507

M18-39

507

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

937

Males

888

M18-39

888

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

811

Males

767

M18-39

767

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

686

Males

646

M18-39

646

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

873

Males

827

M18-39

827

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1177

Males

1122

M18-39

1122

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1346

Males

1283

M18-39

1283

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1436

Males

1368

M18-39

1368

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

729

Males

689

M18-39

689

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1585

Males

1505

M18-39

1505

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1717

Males

1618

M18-39

1618

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5013

Males

4343

M18-39

4343

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13150

Males

8791

M18-39

8791

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8304

Males

6320

M18-39

6320

Passing Analysis

Category:
Athletes Passed
112
Passed By
664
Net Change
-552
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#526
5K → 10K3334-1#526#527
10K → 15K199-98#527#625
15K → 20K736-29#625#654
20K → Half32+1#654#653
Half → 25K1332-19#653#672
25K → 30K968-59#672#731
30K → 20M736-29#731#760
20M → 21M926-17#760#777
21M → 35K115+6#777#771
35K → 23M1117-6#771#777
23M → 24M326-23#777#800
24M → 40K359-56#800#856
40K → 25.2M071-71#856#927
25.2M → Finish2153-151#927#1078
TOTALS112664-552
📊

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