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BOSTON MARATHON 2023

Ian Kretzmann

Bib: 26300•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 48%
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
8:04/mi
25:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
50:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:14:42
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:39:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:44:34
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
2:03:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:29:17
↑ 181↓ 1480.2%
20M
8:12/mi
2:40:25
↑ 64↓ 500.2%
21M
8:31/mi
2:48:56
↑ 106↓ 241.6%
35K· 21.75 mi
8:08/mi
2:55:01
↑ 17↓ 861.7%
23M
8:02/mi
3:05:04
↑ 23↓ 630.6%
24M
8:07/mi
3:13:11
↓ 821.3%
40K· 24.85 mi
8:17/mi
3:20:16
↓ 200.3%
25.2M
8:59/mi
3:23:22
↑ 13↓ 160.2%
Finish· 26.22 mi
7:58/mi
3:31:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:34
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:46:55
Pace8:09 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:4125:048:0425:04
8:04
-
10K
6.21 mi12:06:4450:078:0425:03
8:04
0:00
15K
9.32 mi12:31:191:14:428:0124:35
7:55
-0:09
20K
12.43 mi12:55:501:39:137:5924:31
7:53
-0:02
Half
13.11 mi13:01:111:44:347:595:21
7:50
-0:03
25K
15.53 mi13:20:272:03:507:5819:16
7:57
+0:07
30K
18.64 mi13:45:542:29:178:0025:27
8:11
+0:14
20M
20.00 mi13:57:022:40:258:0111:08
8:12
+0:01
21M
21.00 mi14:05:332:48:568:038:31
8:31
+0:19
35K
21.75 mi14:11:382:55:018:036:05
8:08
-0:23
23M
23.00 mi14:21:413:05:048:0310:03
8:02
-0:06
24M
24.00 mi14:29:483:13:118:038:07
8:07
+0:05
40K
24.85 mi14:36:533:20:168:037:05
8:17
+0:10
25.2M
25.20 mi14:39:593:23:228:043:06
8:59
+0:42
Finish
26.22 mi14:48:063:31:298:048:07
7:58
-1:01

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

7:50 /mi

Average Pace

8:04 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:23

99% of race

Time at Steady Pace

3:06

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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 mi11:41:4125:048:0425:04
8:04
#14461
10K
6.21 mi12:06:4450:078:0425:03
8:04
#14856
15K
9.32 mi12:31:191:14:428:0124:35
7:55
#14450
20K
12.43 mi12:55:501:39:137:5924:31
7:53
#13963
Half
13.11 mi13:01:111:44:347:595:21
7:50
#13917
25K
15.53 mi13:20:272:03:507:5819:16
7:57
#13650
30K
18.64 mi13:45:542:29:178:0025:27
8:11
#13357
20M
20.00 mi13:57:022:40:258:0111:08
8:12
#13211
21M
21.00 mi14:05:332:48:568:038:31
8:31
#13014
35K
21.75 mi14:11:382:55:018:036:05
8:08
#12993
23M
23.00 mi14:21:413:05:048:0310:03
8:02
#12812
24M
24.00 mi14:29:483:13:118:038:07
8:07
#12757
40K
24.85 mi14:36:533:20:168:037:05
8:17
#12715
25.2M
25.20 mi14:39:593:23:228:043:06
8:59
#12710
Finish
26.22 mi14:48:063:31:298:048:07
7:58
#12666
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14461101371013713662(Top 51%)9767(Top 64%)9767(Top 185%)
10K6.21 mi3.10 mi14856-39510273-13610273-13615249(Top 57%)10399(Top 69%)10399(Top 197%)
15K9.32 mi3.11 mi14450+40610104+16910104+16913662(Top 51%)9767(Top 64%)9767(Top 185%)
20K12.43 mi3.11 mi13963+4879882+2229882+22212531(Top 47%)9239(Top 61%)9239(Top 175%)
Half13.11 mi0.68 mi13917+469862+209862+2013044(Top 49%)9501(Top 63%)9501(Top 180%)
25K15.53 mi2.42 mi13650+2679732+1309732+13012266(Top 46%)9017(Top 59%)9017(Top 171%)
30K18.64 mi3.11 mi13357+2939581+1519581+15112282(Top 46%)8918(Top 59%)8918(Top 169%)
20M20.00 mi1.36 mi13211+1469505+769505+7611643(Top 44%)8548(Top 56%)8548(Top 162%)
21M21.00 mi1.00 mi13014+1979402+1039402+10310576(Top 40%)7909(Top 52%)7909(Top 150%)
35K21.75 mi0.75 mi12993+219372+309372+3012965(Top 49%)8963(Top 59%)8963(Top 170%)
23M23.00 mi1.25 mi12812+1819280+929280+929939(Top 37%)7454(Top 49%)7454(Top 141%)
24M24.00 mi1.00 mi12757+559235+459235+4512030(Top 45%)8415(Top 55%)8415(Top 159%)
40K24.85 mi0.85 mi12715+429197+389197+3811896(Top 45%)8275(Top 55%)8275(Top 157%)
25.2M25.20 mi0.35 mi12710+59188+99188+912407(Top 47%)8470(Top 56%)8470(Top 160%)
Finish26.22 mi1.02 mi12666+449151+379151+3711842(Top 44%)8204(Top 54%)8204(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13662

Males

9767

M18-39

9767

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15249

Males

10399

M18-39

10399

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13662

Males

9767

M18-39

9767

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12531

Males

9239

M18-39

9239

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13044

Males

9501

M18-39

9501

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12266

Males

9017

M18-39

9017

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12282

Males

8918

M18-39

8918

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11643

Males

8548

M18-39

8548

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10576

Males

7909

M18-39

7909

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

12965

Males

8963

M18-39

8963

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9939

Males

7454

M18-39

7454

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12030

Males

8415

M18-39

8415

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11896

Males

8275

M18-39

8275

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12407

Males

8470

M18-39

8470

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

11842

Males

8204

M18-39

8204

Passing Analysis

Category:
Athletes Passed
2731
Passed By
936
Net Change
+1795
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14461
5K → 10K145540-395#14461#14856
10K → 15K45145+406#14856#14450
15K → 20K50417+487#14450#13963
20K → Half6115+46#13963#13917
Half → 25K29023+267#13917#13650
25K → 30K35663+293#13650#13357
30K → 20M16822+146#13357#13211
20M → 21M21619+197#13211#13014
21M → 35K5635+21#13014#12993
35K → 23M19615+181#12993#12812
23M → 24M9338+55#12812#12757
24M → 40K8442+42#12757#12715
40K → 25.2M3025+5#12715#12710
25.2M → Finish8137+44#12710#12666
TOTALS2731936+1795
📊

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