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BOSTON MARATHON 2023

James Dohn

Bib: 31711•M

IL

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
8:04/mi
25:03
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
47:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:10/mi
1:09:23
↑ 67↓ 78
20K· 12.43 mi
7:26/mi
1:32:29
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:37:29
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
1:56:27
↑ 66↓ 880.2%
30K· 18.64 mi
8:47/mi
2:23:43
↑ 181↓ 1480.2%
20M
9:49/mi
2:37:04
↑ 64↓ 500.2%
21M
13:43/mi
2:50:47
↑ 106↓ 241.6%
35K· 21.75 mi
9:00/mi
2:57:31
↑ 17↓ 861.7%
23M
9:41/mi
3:09:39
↑ 23↓ 630.6%
24M
9:52/mi
3:19:31
↓ 821.3%
40K· 24.85 mi
12:06/mi
3:29:52
↓ 200.3%
25.2M
10:29/mi
3:33:29
↑ 13↓ 160.2%
Finish· 26.22 mi
9:00/mi
3:42:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:29
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time2:05:10
Pace9:33 /mi
📊Positive Split: 28.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0225:038:0425:03
8:04
-
10K
6.21 mi12:07:0547:067:3522:03
7:06
-0:58
15K
9.32 mi12:29:221:09:237:2722:17
7:10
+0:04
20K
12.43 mi12:52:281:32:297:2723:06
7:26
+0:16
Half
13.11 mi12:57:281:37:297:265:00
7:20
-0:06
25K
15.53 mi13:16:261:56:277:3018:58
7:49
+0:29
30K
18.64 mi13:43:422:23:437:4327:16
8:47
+0:58
20M
20.00 mi13:57:032:37:047:5113:21
9:49
+1:02
21M
21.00 mi14:10:462:50:478:0813:43
13:43
+3:54
35K
21.75 mi14:17:302:57:318:106:44
9:00
-4:43
23M
23.00 mi14:29:383:09:398:1512:08
9:41
+0:41
24M
24.00 mi14:39:303:19:318:199:52
9:52
+0:11
40K
24.85 mi14:49:513:29:528:2710:21
12:06
+2:14
25.2M
25.20 mi14:53:283:33:298:283:37
10:29
-1:37
Finish
26.22 mi15:02:383:42:398:309:10
9:00
-1:29

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

7:06 /mi

Average Pace

8:30 /mi

Slowest Pace

13:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:27

52% of race

Time at Steady Pace

1:18:31

35% of race

Time at Slower Pace

27:41

12% of race

Average Pace: 8:29 /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 mi11:45:0225:038:0425:03
8:04
#14440
10K
6.21 mi12:07:0547:067:3522:03
7:06
#10742
15K
9.32 mi12:29:221:09:237:2722:17
7:10
#9567
20K
12.43 mi12:52:281:32:297:2723:06
7:26
#9348
Half
13.11 mi12:57:281:37:297:265:00
7:20
#9313
25K
15.53 mi13:16:261:56:277:3018:58
7:49
#9620
30K
18.64 mi13:43:422:23:437:4327:16
8:47
#10851
20M
20.00 mi13:57:032:37:047:5113:21
9:49
#11808
21M
21.00 mi14:10:462:50:478:0813:43
13:43
#13711
35K
21.75 mi14:17:302:57:318:106:44
9:00
#13896
23M
23.00 mi14:29:383:09:398:1512:08
9:41
#14301
24M
24.00 mi14:39:303:19:318:199:52
9:52
#14674
40K
24.85 mi14:49:513:29:528:2710:21
12:06
#15411
25.2M
25.20 mi14:53:283:33:298:283:37
10:29
#15493
Finish
26.22 mi15:02:383:42:398:309:10
9:00
#15611
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1444010130101307614(Top 29%)6675(Top 44%)6675(Top 126%)
10K6.21 mi3.10 mi10742+36988534+15968534+15967428(Top 28%)6553(Top 43%)6553(Top 124%)
15K9.32 mi3.11 mi9567+11757912+6227912+6227614(Top 29%)6675(Top 44%)6675(Top 126%)
20K12.43 mi3.11 mi9348+2197761+1517761+1518799(Top 33%)7381(Top 49%)7381(Top 140%)
Half13.11 mi0.68 mi9313+357736+257736+258846(Top 33%)7437(Top 49%)7437(Top 141%)
25K15.53 mi2.42 mi9620-3077912-1767912-17611282(Top 42%)8626(Top 57%)8626(Top 163%)
30K18.64 mi3.11 mi10851-12318510-5988510-59815904(Top 60%)10439(Top 69%)10439(Top 198%)
20M20.00 mi1.36 mi11808-9578904-3948904-39419920(Top 75%)12087(Top 80%)12087(Top 229%)
21M21.00 mi1.00 mi13711-19039696-7929696-79224787(Top 93%)14266(Top 94%)14266(Top 270%)
35K21.75 mi0.75 mi13896-1859746-509746-5017885(Top 67%)11086(Top 73%)11086(Top 210%)
23M23.00 mi1.25 mi14301-4059870-1249870-12419026(Top 71%)11576(Top 76%)11576(Top 219%)
24M24.00 mi1.00 mi14674-3739992-1229992-12220413(Top 77%)12178(Top 80%)12178(Top 230%)
40K24.85 mi0.85 mi15411-73710257-26510257-26524008(Top 90%)13799(Top 91%)13799(Top 261%)
25.2M25.20 mi0.35 mi15493-8210287-3010287-3019009(Top 71%)11465(Top 76%)11465(Top 217%)
Finish26.22 mi1.02 mi15611-11810325-3810325-3817936(Top 67%)11032(Top 73%)11032(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7614

Males

6675

M18-39

6675

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7428

Males

6553

M18-39

6553

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7614

Males

6675

M18-39

6675

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8799

Males

7381

M18-39

7381

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8846

Males

7437

M18-39

7437

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11282

Males

8626

M18-39

8626

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

15904

Males

10439

M18-39

10439

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

19920

Males

12087

M18-39

12087

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24787

Males

14266

M18-39

14266

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17885

Males

11086

M18-39

11086

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

19026

Males

11576

M18-39

11576

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20413

Males

12178

M18-39

12178

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

24008

Males

13799

M18-39

13799

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

19009

Males

11465

M18-39

11465

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17936

Males

11032

M18-39

11032

Passing Analysis

Category:
Athletes Passed
5372*
Passed By
6542
Net Change
-1171
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14440
5K → 10K37002+3698#14440#10742
10K → 15K1178*3+1175#10742#9567
15K → 20K26647+219#9567#9348
20K → Half4712+35#9348#9313
Half → 25K54361-307#9313#9620
25K → 30K161246-1231#9620#10851
30K → 20M7964-957#10851#11808
20M → 21M11904-1903#11808#13711
21M → 35K14199-185#13711#13896
35K → 23M18423-405#13896#14301
23M → 24M17390-373#14301#14674
24M → 40K4741-737#14674#15411
40K → 25.2M1698-82#15411#15493
25.2M → Finish34152-118#15493#15611
TOTALS5372*6542-1171

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

📊

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