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BOSTON MARATHON 2023

Matthew Grieshaber

Bib: 2370•M

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 44%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:34
Rank: #3028
Start → 5K
20:34 | 6:37/mi
10K· 6.21 mi
40:55
Rank: #3054 (-26)
5K → 10K
20:21 | 6:33/mi
15K· 9.32 mi
1:01:22
Rank: #3090 (-36)
10K → 15K
20:27 | 6:35/mi
20K· 12.43 mi
1:22:04
Rank: #3112 (-22)
15K → 20K
20:42 | 6:40/mi
Half· 13.11 mi
1:26:38
Rank: #3148 (-36)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:42:55
Rank: #3171 (-23)
Half → 25K
16:17 | 6:43/mi
30K· 18.64 mi
2:04:47
Rank: #3389 (-218)
25K → 30K
21:52 | 7:02/mi
20M
2:14:44
Rank: #3591 (-202)
30K → 20M
9:57 | 7:19/mi
21M
2:23:49
Rank: #4293 (-702)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
2:30:38
Rank: #4913 (-620)
21M → 35K
6:49 | 9:07/mi
23M
2:42:51
Rank: #5695 (-782)
35K → 23M
12:13 | 9:45/mi
24M
2:52:57
Rank: #6362 (-667)
23M → 24M
10:06 | 10:06/mi
40K· 24.85 mi
3:02:08
Rank: #7054 (-692)
24M → 40K
9:11 | 10:44/mi
25.2M
3:06:01
Rank: #7330 (-276)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
3:15:47
Rank: #7948 (-618)
25.2M → Finish
9:46 | 9:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:38
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:49:09
Pace8:20 /mi
📊Positive Split: 26.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3820:346:3720:34
6:37
-
10K
6.21 mi10:41:5940:556:3520:21
6:33
-0:04
15K
9.32 mi11:02:261:01:226:3520:27
6:35
+0:02
20K
12.43 mi11:23:081:22:046:3620:42
6:40
+0:05
Half
13.11 mi11:27:421:26:386:374:34
6:42
+0:02
25K
15.53 mi11:43:591:42:556:3816:17
6:43
+0:01
30K
18.64 mi12:05:512:04:476:4221:52
7:02
+0:19
20M
20.00 mi12:15:482:14:446:449:57
7:19
+0:17
21M
21.00 mi12:24:532:23:496:519:05
9:05
+1:46
35K
21.75 mi12:31:422:30:386:566:49
9:07
+0:02
23M
23.00 mi12:43:552:42:517:0512:13
9:45
+0:38
24M
24.00 mi12:54:012:52:577:1210:06
10:06
+0:21
40K
24.85 mi13:03:123:02:087:209:11
10:44
+0:38
25.2M
25.20 mi13:07:053:06:017:233:53
11:16
+0:32
Finish
26.22 mi13:16:513:15:477:289:46
9:35
-1:41

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

6:33 /mi

Average Pace

7:28 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:14:44

69% of race

Time at Slower Pace

1:01:03

31% of race

Average Pace: 7:28 /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 mi10:21:3820:346:3720:34
6:37
#3028
10K
6.21 mi10:41:5940:556:3520:21
6:33
#3054
15K
9.32 mi11:02:261:01:226:3520:27
6:35
#3090
20K
12.43 mi11:23:081:22:046:3620:42
6:40
#3112
Half
13.11 mi11:27:421:26:386:374:34
6:42
#3148
25K
15.53 mi11:43:591:42:556:3816:17
6:43
#3171
30K
18.64 mi12:05:512:04:476:4221:52
7:02
#3389
20M
20.00 mi12:15:482:14:446:449:57
7:19
#3591
21M
21.00 mi12:24:532:23:496:519:05
9:05
#4293
35K
21.75 mi12:31:422:30:386:566:49
9:07
#4913
23M
23.00 mi12:43:552:42:517:0512:13
9:45
#5695
24M
24.00 mi12:54:012:52:577:1210:06
10:06
#6362
40K
24.85 mi13:03:123:02:087:209:11
10:44
#7054
25.2M
25.20 mi13:07:053:06:017:233:53
11:16
#7330
Finish
26.22 mi13:16:513:15:477:289:46
9:35
#7948
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3028287028703176(Top 12%)3025(Top 20%)3025(Top 57%)
10K6.21 mi3.10 mi3054-262909-392909-393141(Top 12%)2997(Top 20%)2997(Top 57%)
15K9.32 mi3.11 mi3090-362945-362945-363176(Top 12%)3025(Top 20%)3025(Top 57%)
20K12.43 mi3.11 mi3112-222967-222967-223299(Top 12%)3133(Top 21%)3133(Top 59%)
Half13.11 mi0.68 mi3148-362998-312998-314361(Top 16%)4085(Top 27%)4085(Top 77%)
25K15.53 mi2.42 mi3171-233020-223020-223506(Top 13%)3319(Top 22%)3319(Top 63%)
30K18.64 mi3.11 mi3389-2183211-1913211-1914605(Top 17%)4264(Top 28%)4264(Top 81%)
20M20.00 mi1.36 mi3591-2023397-1863397-1865771(Top 22%)5131(Top 34%)5131(Top 97%)
21M21.00 mi1.00 mi4293-7024015-6184015-61813845(Top 52%)9408(Top 62%)9408(Top 178%)
35K21.75 mi0.75 mi4913-6204556-5414556-54118334(Top 69%)11280(Top 74%)11280(Top 213%)
23M23.00 mi1.25 mi5695-7825186-6305186-63019262(Top 72%)11672(Top 77%)11672(Top 221%)
24M24.00 mi1.00 mi6362-6675683-4975683-49721051(Top 79%)12449(Top 82%)12449(Top 236%)
40K24.85 mi0.85 mi7054-6926153-4706153-47021788(Top 82%)12724(Top 84%)12724(Top 241%)
25.2M25.20 mi0.35 mi7330-2766327-1746327-17421001(Top 79%)12374(Top 82%)12374(Top 234%)
Finish26.22 mi1.02 mi7948-6186704-3776704-37720389(Top 77%)12123(Top 80%)12123(Top 229%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3176

Males

3025

M18-39

3025

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3141

Males

2997

M18-39

2997

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3176

Males

3025

M18-39

3025

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3299

Males

3133

M18-39

3133

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4361

Males

4085

M18-39

4085

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3506

Males

3319

M18-39

3319

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4605

Males

4264

M18-39

4264

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

5771

Males

5131

M18-39

5131

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13845

Males

9408

M18-39

9408

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18334

Males

11280

M18-39

11280

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

19262

Males

11672

M18-39

11672

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

21051

Males

12449

M18-39

12449

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21788

Males

12724

M18-39

12724

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21001

Males

12374

M18-39

12374

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

20389

Males

12123

M18-39

12123

Passing Analysis

Category:
Athletes Passed
447
Passed By
5367
Net Change
-4920
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3028
5K → 10K150176-26#3028#3054
10K → 15K74110-36#3054#3090
15K → 20K78100-22#3090#3112
20K → Half743-36#3112#3148
Half → 25K5376-23#3148#3171
25K → 30K39257-218#3171#3389
30K → 20M21223-202#3389#3591
20M → 21M5707-702#3591#4293
21M → 35K2622-620#4293#4913
35K → 23M5787-782#4913#5695
23M → 24M5672-667#5695#6362
24M → 40K2694-692#6362#7054
40K → 25.2M1277-276#7054#7330
25.2M → Finish5623-618#7330#7948
TOTALS4475367-4920
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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