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BOSTON MARATHON 2023

Mike Bosma

Bib: 8363•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 27%
Gender (Male)
#0 / 15176
Top 41%
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
6:48/mi
21:07
↑ 97↓ 3451.5%
10K· 6.21 mi
6:50/mi
42:20
↑ 79↓ 1380.4%
15K· 9.32 mi
6:51/mi
1:03:37
↑ 67↓ 78
20K· 12.43 mi
6:59/mi
1:25:19
↑ 106↓ 860.1%
Half· 13.11 mi
6:55/mi
1:30:02
↑ 19↓ 370.5%
25K· 15.53 mi
7:04/mi
1:47:11
↑ 66↓ 880.2%
30K· 18.64 mi
7:27/mi
2:10:20
↑ 181↓ 1480.2%
20M
8:37/mi
2:22:03
↑ 64↓ 500.2%
21M
8:26/mi
2:30:29
↑ 106↓ 241.6%
35K· 21.75 mi
7:52/mi
2:36:22
↑ 17↓ 861.7%
23M
8:11/mi
2:46:37
↑ 23↓ 630.6%
24M
8:24/mi
2:55:01
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:02:07
↓ 200.3%
25.2M
8:48/mi
3:05:09
↑ 13↓ 160.2%
Finish· 26.22 mi
7:39/mi
3:12:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:02
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:42:55
Pace7:51 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:1821:076:4821:07
6:48
-
10K
6.21 mi11:07:3142:206:4921:13
6:50
+0:02
15K
9.32 mi11:28:481:03:376:5021:17
6:51
+0:01
20K
12.43 mi11:50:301:25:196:5221:42
6:59
+0:08
Half
13.11 mi11:55:131:30:026:524:43
6:55
-0:04
25K
15.53 mi12:12:221:47:116:5417:09
7:04
+0:09
30K
18.64 mi12:35:312:10:207:0023:09
7:27
+0:23
20M
20.00 mi12:47:142:22:037:0611:43
8:37
+1:10
21M
21.00 mi12:55:402:30:297:108:26
8:26
-0:11
35K
21.75 mi13:01:332:36:227:115:53
7:52
-0:34
23M
23.00 mi13:11:482:46:377:1510:15
8:11
+0:19
24M
24.00 mi13:20:122:55:017:188:24
8:24
+0:13
40K
24.85 mi13:27:183:02:077:207:06
8:18
-0:06
25.2M
25.20 mi13:30:203:05:097:213:02
8:48
+0:30
Finish
26.22 mi13:38:083:12:577:227:48
7:39
-1:09

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

6:48 /mi

Average Pace

7:22 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:11

56% of race

Time at Steady Pace

36:50

19% of race

Time at Slower Pace

48:56

25% of race

Average Pace: 7:22 /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 mi10:46:1821:076:4821:07
6:48
#4657
10K
6.21 mi11:07:3142:206:4921:13
6:50
#5076
15K
9.32 mi11:28:481:03:376:5021:17
6:51
#5227
20K
12.43 mi11:50:301:25:196:5221:42
6:59
#5448
Half
13.11 mi11:55:131:30:026:524:43
6:55
#5500
25K
15.53 mi12:12:221:47:116:5417:09
7:04
#5582
30K
18.64 mi12:35:312:10:207:0023:09
7:27
#5753
20M
20.00 mi12:47:142:22:037:0611:43
8:37
#6243
21M
21.00 mi12:55:402:30:297:108:26
8:26
#6363
35K
21.75 mi13:01:332:36:227:115:53
7:52
#6488
23M
23.00 mi13:11:482:46:377:1510:15
8:11
#6665
24M
24.00 mi13:20:122:55:017:188:24
8:24
#6888
40K
24.85 mi13:27:183:02:077:207:06
8:18
#7046
25.2M
25.20 mi13:30:203:05:097:213:02
8:48
#7089
Finish
26.22 mi13:38:083:12:577:227:48
7:39
#7136
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4657434043405580(Top 21%)5134(Top 34%)5134(Top 97%)
10K6.21 mi3.10 mi5076-4194704-3644704-3645573(Top 21%)5123(Top 34%)5123(Top 97%)
15K9.32 mi3.11 mi5227-1514843-1394843-1395580(Top 21%)5134(Top 34%)5134(Top 97%)
20K12.43 mi3.11 mi5448-2215029-1865029-1865894(Top 22%)5390(Top 36%)5390(Top 102%)
Half13.11 mi0.68 mi5500-525077-485077-486091(Top 23%)5561(Top 37%)5561(Top 105%)
25K15.53 mi2.42 mi5582-825144-675144-675987(Top 22%)5438(Top 36%)5438(Top 103%)
30K18.64 mi3.11 mi5753-1715275-1315275-1316893(Top 26%)5995(Top 40%)5995(Top 113%)
20M20.00 mi1.36 mi6243-4905638-3635638-36314361(Top 54%)9707(Top 64%)9707(Top 184%)
21M21.00 mi1.00 mi6363-1205721-835721-8310032(Top 38%)7611(Top 50%)7611(Top 144%)
35K21.75 mi0.75 mi6488-1255796-755796-7511052(Top 42%)8121(Top 54%)8121(Top 154%)
23M23.00 mi1.25 mi6665-1775917-1215917-12111056(Top 42%)7987(Top 53%)7987(Top 151%)
24M24.00 mi1.00 mi6888-2236057-1406057-14013830(Top 52%)9227(Top 61%)9227(Top 175%)
40K24.85 mi0.85 mi7046-1586147-906147-9012004(Top 45%)8301(Top 55%)8301(Top 157%)
25.2M25.20 mi0.35 mi7089-436169-226169-2211205(Top 42%)7868(Top 52%)7868(Top 149%)
Finish26.22 mi1.02 mi7136-476174-56174-59628(Top 36%)7079(Top 47%)7079(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5580

Males

5134

M18-39

5134

5K→10K

3.1 - 6.2 mi

Top 21%
×5story building
+79ft-138ft

Overall

5573

Males

5123

M18-39

5123

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5580

Males

5134

M18-39

5134

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

5894

Males

5390

M18-39

5390

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6091

Males

5561

M18-39

5561

Half→25K

13.1 - 15.5 mi

Top 22%
×4story building
+66ft-88ft

Overall

5987

Males

5438

M18-39

5438

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

6893

Males

5995

M18-39

5995

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14361

Males

9707

M18-39

9707

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10032

Males

7611

M18-39

7611

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11052

Males

8121

M18-39

8121

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11056

Males

7987

M18-39

7987

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13830

Males

9227

M18-39

9227

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12004

Males

8301

M18-39

8301

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11205

Males

7868

M18-39

7868

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9628

Males

7079

M18-39

7079

Passing Analysis

Category:
Athletes Passed
498
Passed By
2977
Net Change
-2479
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4657
5K → 10K67486-419#4657#5076
10K → 15K60211-151#5076#5227
15K → 20K55276-221#5227#5448
20K → Half860-52#5448#5500
Half → 25K59141-82#5500#5582
25K → 30K75246-171#5582#5753
30K → 20M6496-490#5753#6243
20M → 21M28148-120#6243#6363
21M → 35K16141-125#6363#6488
35K → 23M25202-177#6488#6665
23M → 24M14237-223#6665#6888
24M → 40K16174-158#6888#7046
40K → 25.2M1659-43#7046#7089
25.2M → Finish53100-47#7089#7136
TOTALS4982977-2479
📊

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