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BOSTON MARATHON 2023

Craig Sundberg

Bib: 25031•M

MA

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:17/mi
28:52
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
54:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:17/mi
1:20:36
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:46:47
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:52:26
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:13:14
↑ 66↓ 880.2%
30K· 18.64 mi
10:15/mi
2:45:06
↑ 181↓ 1480.2%
20M
10:01/mi
2:58:43
↑ 64↓ 500.2%
21M
10:32/mi
3:09:15
↑ 106↓ 241.6%
35K· 21.75 mi
9:43/mi
3:16:31
↑ 17↓ 861.7%
23M
9:35/mi
3:28:31
↑ 23↓ 630.6%
24M
9:30/mi
3:38:01
↓ 821.3%
40K· 24.85 mi
9:45/mi
3:46:21
↓ 200.3%
25.2M
10:18/mi
3:49:54
↑ 13↓ 160.2%
Finish· 26.22 mi
8:48/mi
3:58:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:26
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:06:26
Pace9:39 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:1728:529:1728:52
9:17
-
10K
6.21 mi12:17:1754:528:5026:00
8:22
-0:55
15K
9.32 mi12:43:011:20:368:3925:44
8:17
-0:05
20K
12.43 mi13:09:121:46:478:3626:11
8:26
+0:09
Half
13.11 mi13:14:511:52:268:355:39
8:17
-0:09
25K
15.53 mi13:35:392:13:148:3520:48
8:35
+0:18
30K
18.64 mi14:07:312:45:068:5131:52
10:15
+1:40
20M
20.00 mi14:21:082:58:438:5613:37
10:01
-0:14
21M
21.00 mi14:31:403:09:159:0110:32
10:32
+0:31
35K
21.75 mi14:38:563:16:319:027:16
9:43
-0:49
23M
23.00 mi14:50:563:28:319:0412:00
9:35
-0:08
24M
24.00 mi15:00:263:38:019:059:30
9:30
-0:05
40K
24.85 mi15:08:463:46:219:068:20
9:45
+0:15
25.2M
25.20 mi15:12:193:49:549:073:33
10:18
+0:33
Finish
26.22 mi15:21:173:58:529:078:58
8:48
-1:30

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

8:17 /mi

Average Pace

9:07 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:20

47% of race

Time at Steady Pace

1:05:58

28% of race

Time at Slower Pace

59:34

25% of race

Average Pace: 9:07 /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 mi11:51:1728:529:1728:52
9:17
#21497
10K
6.21 mi12:17:1754:528:5026:00
8:22
#19827
15K
9.32 mi12:43:011:20:368:3925:44
8:17
#18739
20K
12.43 mi13:09:121:46:478:3626:11
8:26
#18161
Half
13.11 mi13:14:511:52:268:355:39
8:17
#18064
25K
15.53 mi13:35:392:13:148:3520:48
8:35
#17800
30K
18.64 mi14:07:312:45:068:5131:52
10:15
#18868
20M
20.00 mi14:21:082:58:438:5613:37
10:01
#19050
21M
21.00 mi14:31:403:09:159:0110:32
10:32
#19103
35K
21.75 mi14:38:563:16:319:027:16
9:43
#19182
23M
23.00 mi14:50:563:28:319:0412:00
9:35
#19146
24M
24.00 mi15:00:263:38:019:059:30
9:30
#19151
40K
24.85 mi15:08:463:46:219:068:20
9:45
#19175
25.2M
25.20 mi15:12:193:49:549:073:33
10:18
#19158
Finish
26.22 mi15:21:173:58:529:078:58
8:48
#19106
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21497128421284216427(Top 62%)10859(Top 72%)10859(Top 205%)
10K6.21 mi3.10 mi19827+167012139+70312139+70317359(Top 65%)11243(Top 74%)11243(Top 213%)
15K9.32 mi3.11 mi18739+108811752+38711752+38716427(Top 62%)10859(Top 72%)10859(Top 205%)
20K12.43 mi3.11 mi18161+57811534+21811534+21816412(Top 62%)10801(Top 71%)10801(Top 204%)
Half13.11 mi0.68 mi18064+9711496+3811496+3816355(Top 61%)10841(Top 71%)10841(Top 205%)
25K15.53 mi2.42 mi17800+26411360+13611360+13616683(Top 63%)10845(Top 71%)10845(Top 205%)
30K18.64 mi3.11 mi18868-106811787-42711787-42721666(Top 81%)12924(Top 85%)12924(Top 245%)
20M20.00 mi1.36 mi19050-18211847-6011847-6020530(Top 77%)12355(Top 81%)12355(Top 234%)
21M21.00 mi1.00 mi19103-5311856-911856-919684(Top 74%)11905(Top 78%)11905(Top 225%)
35K21.75 mi0.75 mi19182-7911879-2311879-2320498(Top 77%)12254(Top 81%)12254(Top 232%)
23M23.00 mi1.25 mi19146+3611856+2311856+2318654(Top 70%)11417(Top 75%)11417(Top 216%)
24M24.00 mi1.00 mi19151-511851+511851+519192(Top 72%)11613(Top 77%)11613(Top 220%)
40K24.85 mi0.85 mi19175-2411854-311854-319172(Top 72%)11569(Top 76%)11569(Top 219%)
25.2M25.20 mi0.35 mi19158+1711846+811846+818431(Top 69%)11223(Top 74%)11223(Top 212%)
Finish26.22 mi1.02 mi19106+5211815+3111815+3117028(Top 64%)10624(Top 70%)10624(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16427

Males

10859

M18-39

10859

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17359

Males

11243

M18-39

11243

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16427

Males

10859

M18-39

10859

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16412

Males

10801

M18-39

10801

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16355

Males

10841

M18-39

10841

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16683

Males

10845

M18-39

10845

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

21666

Males

12924

M18-39

12924

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20530

Males

12355

M18-39

12355

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19684

Males

11905

M18-39

11905

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20498

Males

12254

M18-39

12254

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18654

Males

11417

M18-39

11417

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19192

Males

11613

M18-39

11613

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19172

Males

11569

M18-39

11569

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18431

Males

11223

M18-39

11223

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

17028

Males

10624

M18-39

10624

Passing Analysis

Category:
Athletes Passed
4189
Passed By
1798
Net Change
+2391
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21497
5K → 10K168010+1670#21497#19827
10K → 15K10957+1088#19827#18739
15K → 20K58911+578#18739#18161
20K → Half992+97#18161#18064
Half → 25K28622+264#18064#17800
25K → 30K251093-1068#17800#18868
30K → 20M37219-182#18868#19050
20M → 21M57110-53#19050#19103
21M → 35K1998-79#19103#19182
35K → 23M9256+36#19182#19146
23M → 24M5358-5#19146#19151
24M → 40K4973-24#19151#19175
40K → 25.2M3114+17#19175#19158
25.2M → Finish7725+52#19158#19106
TOTALS41891798+2391
📊

Passing Visuals

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