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BOSTON MARATHON 2023

Isaac Wieber

Bib: 4402•M

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 24%
Gender (Male)
#0 / 15176
Top 37%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:22
Rank: #5382
Start → 5K
21:22 | 6:53/mi
10K· 6.21 mi
42:28
Rank: #5258 (+124)
5K → 10K
21:06 | 6:47/mi
15K· 9.32 mi
1:03:40
Rank: #5275 (-17)
10K → 15K
21:12 | 6:49/mi
20K· 12.43 mi
1:25:10
Rank: #5360 (-85)
15K → 20K
21:30 | 6:55/mi
Half· 13.11 mi
1:29:53
Rank: #5403 (-43)
20K → Half
4:43 | 6:55/mi
25K· 15.53 mi
1:46:41
Rank: #5349 (+54)
Half → 25K
16:48 | 6:56/mi
30K· 18.64 mi
2:09:23
Rank: #5479 (-130)
25K → 30K
22:42 | 7:18/mi
20M
2:19:19
Rank: #5456 (+23)
30K → 20M
9:56 | 7:19/mi
21M
2:26:55
Rank: #5385 (+71)
20M → 21M
7:36 | 7:36/mi
35K· 21.75 mi
2:32:36
Rank: #5486 (-101)
21M → 35K
5:41 | 7:36/mi
23M
2:42:22
Rank: #5584 (-98)
35K → 23M
9:46 | 7:48/mi
24M
2:50:26
Rank: #5751 (-167)
23M → 24M
8:04 | 8:04/mi
40K· 24.85 mi
2:57:38
Rank: #5915 (-164)
24M → 40K
7:12 | 8:25/mi
25.2M
3:00:45
Rank: #5987 (-72)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:09:37
Rank: #6330 (-343)
25.2M → Finish
8:52 | 8:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:53
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:39:44
Pace7:36 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1121:226:5321:22
6:53
-
10K
6.21 mi10:44:1742:286:5021:06
6:47
-0:06
15K
9.32 mi11:05:291:03:406:5021:12
6:49
+0:02
20K
12.43 mi11:26:591:25:106:5121:30
6:55
+0:06
Half
13.11 mi11:31:421:29:536:514:43
6:55
0:00
25K
15.53 mi11:48:301:46:416:5216:48
6:56
+0:01
30K
18.64 mi12:11:122:09:236:5622:42
7:18
+0:22
20M
20.00 mi12:21:082:19:196:589:56
7:19
+0:01
21M
21.00 mi12:28:442:26:557:007:36
7:36
+0:17
35K
21.75 mi12:34:252:32:367:015:41
7:36
0:00
23M
23.00 mi12:44:112:42:227:049:46
7:48
+0:12
24M
24.00 mi12:52:152:50:267:068:04
8:04
+0:16
40K
24.85 mi12:59:272:57:387:097:12
8:25
+0:21
25.2M
25.20 mi13:02:343:00:457:103:07
9:02
+0:37
Finish
26.22 mi13:11:263:09:377:148:52
8:42
-0:20

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

6:47 /mi

Average Pace

7:14 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:46:41

56% of race

Time at Steady Pace

45:55

24% of race

Time at Slower Pace

37:01

20% of race

Average Pace: 7:14 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:23:1121:226:5321:22
6:53
#5382
10K
6.21 mi10:44:1742:286:5021:06
6:47
#5258
15K
9.32 mi11:05:291:03:406:5021:12
6:49
#5275
20K
12.43 mi11:26:591:25:106:5121:30
6:55
#5360
Half
13.11 mi11:31:421:29:536:514:43
6:55
#5403
25K
15.53 mi11:48:301:46:416:5216:48
6:56
#5349
30K
18.64 mi12:11:122:09:236:5622:42
7:18
#5479
20M
20.00 mi12:21:082:19:196:589:56
7:19
#5456
21M
21.00 mi12:28:442:26:557:007:36
7:36
#5385
35K
21.75 mi12:34:252:32:367:015:41
7:36
#5486
23M
23.00 mi12:44:112:42:227:049:46
7:48
#5584
24M
24.00 mi12:52:152:50:267:068:04
8:04
#5751
40K
24.85 mi12:59:272:57:387:097:12
8:25
#5915
25.2M
25.20 mi13:02:343:00:457:103:07
9:02
#5987
Finish
26.22 mi13:11:263:09:377:148:52
8:42
#6330
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5382497349735340(Top 20%)4932(Top 32%)4932(Top 93%)
10K6.21 mi3.10 mi5258+1244864+1094864+1095227(Top 20%)4836(Top 32%)4836(Top 92%)
15K9.32 mi3.11 mi5275-174886-224886-225340(Top 20%)4932(Top 32%)4932(Top 93%)
20K12.43 mi3.11 mi5360-854962-764962-765481(Top 21%)5052(Top 33%)5052(Top 96%)
Half13.11 mi0.68 mi5403-434994-324994-326070(Top 23%)5540(Top 37%)5540(Top 105%)
25K15.53 mi2.42 mi5349+544947+474947+475151(Top 19%)4754(Top 31%)4754(Top 90%)
30K18.64 mi3.11 mi5479-1305051-1045051-1046057(Top 23%)5406(Top 36%)5406(Top 102%)
20M20.00 mi1.36 mi5456+235021+305021+305695(Top 21%)5070(Top 33%)5070(Top 96%)
21M21.00 mi1.00 mi5385+714954+674954+675098(Top 19%)4551(Top 30%)4551(Top 86%)
35K21.75 mi0.75 mi5486-1015034-805034-809179(Top 34%)7156(Top 47%)7156(Top 135%)
23M23.00 mi1.25 mi5584-985106-725106-728383(Top 31%)6625(Top 44%)6625(Top 125%)
24M24.00 mi1.00 mi5751-1675221-1155221-11511644(Top 44%)8212(Top 54%)8212(Top 155%)
40K24.85 mi0.85 mi5915-1645330-1095330-10912782(Top 48%)8657(Top 57%)8657(Top 164%)
25.2M25.20 mi0.35 mi5987-725383-535383-5312638(Top 47%)8551(Top 56%)8551(Top 162%)
Finish26.22 mi1.02 mi6330-3435636-2535636-25316452(Top 62%)10349(Top 68%)10349(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5340

Males

4932

M18-39

4932

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5227

Males

4836

M18-39

4836

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5340

Males

4932

M18-39

4932

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5481

Males

5052

M18-39

5052

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6070

Males

5540

M18-39

5540

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5151

Males

4754

M18-39

4754

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6057

Males

5406

M18-39

5406

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5695

Males

5070

M18-39

5070

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5098

Males

4551

M18-39

4551

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9179

Males

7156

M18-39

7156

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8383

Males

6625

M18-39

6625

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11644

Males

8212

M18-39

8212

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12782

Males

8657

M18-39

8657

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12638

Males

8551

M18-39

8551

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

16452

Males

10349

M18-39

10349

Passing Analysis

Category:
Athletes Passed
922
Passed By
1870
Net Change
-948
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5382
5K → 10K271147+124#5382#5258
10K → 15K100117-17#5258#5275
15K → 20K84169-85#5275#5360
20K → Half1154-43#5360#5403
Half → 25K11359+54#5403#5349
25K → 30K88218-130#5349#5479
30K → 20M6643+23#5479#5456
20M → 21M9524+71#5456#5385
21M → 35K12113-101#5385#5486
35K → 23M39137-98#5486#5584
23M → 24M14181-167#5584#5751
24M → 40K19183-164#5751#5915
40K → 25.2M476-72#5915#5987
25.2M → Finish6349-343#5987#6330
TOTALS9221870-948
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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