Boston Marathon logo
BOSTON MARATHON 2023

Michael Marshall

Bib: 4532•M

OR

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 29%
Gender (Male)
#0 / 15176
Top 43%
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
21:14
Rank: #5009
Start → 5K
21:14 | 6:50/mi
10K· 6.21 mi
42:19
Rank: #5066 (-57)
5K → 10K
21:05 | 6:47/mi
15K· 9.32 mi
1:03:27
Rank: #5063 (+3)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:25:13
Rank: #5400 (-337)
15K → 20K
21:46 | 7:00/mi
Half· 13.11 mi
1:30:01
Rank: #5490 (-90)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:48:00
Rank: #5922 (-432)
Half → 25K
17:59 | 7:25/mi
30K· 18.64 mi
2:13:13
Rank: #6662 (-740)
25K → 30K
25:13 | 8:07/mi
20M
2:24:28
Rank: #6960 (-298)
30K → 20M
11:15 | 8:17/mi
21M
2:33:15
Rank: #7164 (-204)
20M → 21M
8:47 | 8:47/mi
35K· 21.75 mi
2:39:13
Rank: #7311 (-147)
21M → 35K
5:58 | 7:59/mi
23M
2:49:11
Rank: #7381 (-70)
35K → 23M
9:58 | 7:58/mi
24M
2:57:04
Rank: #7468 (-87)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:03:35
Rank: #7446 (+22)
24M → 40K
6:31 | 7:37/mi
25.2M
3:06:36
Rank: #7496 (-50)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:14:41
Rank: #7638 (-142)
25.2M → Finish
8:05 | 7:56/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:01
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:44:40
Pace7:59 /mi
📊Positive Split: 16.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2121:146:5021:14
6:50
-
10K
6.21 mi10:44:2642:196:4921:05
6:47
-0:03
15K
9.32 mi11:05:341:03:276:4821:08
6:48
+0:01
20K
12.43 mi11:27:201:25:136:5121:46
7:00
+0:12
Half
13.11 mi11:32:081:30:016:524:48
7:02
+0:02
25K
15.53 mi11:50:071:48:006:5717:59
7:25
+0:23
30K
18.64 mi12:15:202:13:137:0925:13
8:07
+0:42
20M
20.00 mi12:26:352:24:287:1311:15
8:17
+0:10
21M
21.00 mi12:35:222:33:157:188:47
8:47
+0:30
35K
21.75 mi12:41:202:39:137:195:58
7:59
-0:48
23M
23.00 mi12:51:182:49:117:219:58
7:58
-0:01
24M
24.00 mi12:59:112:57:047:237:53
7:53
-0:05
40K
24.85 mi13:05:423:03:357:236:31
7:37
-0:16
25.2M
25.20 mi13:08:433:06:367:243:01
8:45
+1:08
Finish
26.22 mi13:16:483:14:417:268:05
7:56
-0:49

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

6:47 /mi

Average Pace

7:26 /mi

Slowest Pace

8:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:00

55% of race

Time at Steady Pace

1:03:38

33% of race

Time at Slower Pace

23:03

12% of race

Average Pace: 7:25 /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 mi10:23:2121:146:5021:14
6:50
#5009
10K
6.21 mi10:44:2642:196:4921:05
6:47
#5066
15K
9.32 mi11:05:341:03:276:4821:08
6:48
#5063
20K
12.43 mi11:27:201:25:136:5121:46
7:00
#5400
Half
13.11 mi11:32:081:30:016:524:48
7:02
#5490
25K
15.53 mi11:50:071:48:006:5717:59
7:25
#5922
30K
18.64 mi12:15:202:13:137:0925:13
8:07
#6662
20M
20.00 mi12:26:352:24:287:1311:15
8:17
#6960
21M
21.00 mi12:35:222:33:157:188:47
8:47
#7164
35K
21.75 mi12:41:202:39:137:195:58
7:59
#7311
23M
23.00 mi12:51:182:49:117:219:58
7:58
#7381
24M
24.00 mi12:59:112:57:047:237:53
7:53
#7468
40K
24.85 mi13:05:423:03:357:236:31
7:37
#7446
25.2M
25.20 mi13:08:433:06:367:243:01
8:45
#7496
Finish
26.22 mi13:16:483:14:417:268:05
7:56
#7638
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5009465146515164(Top 19%)4781(Top 32%)4781(Top 90%)
10K6.21 mi3.10 mi5066-574695-444695-445167(Top 19%)4781(Top 32%)4781(Top 90%)
15K9.32 mi3.11 mi5063+34699-44699-45164(Top 19%)4781(Top 32%)4781(Top 90%)
20K12.43 mi3.11 mi5400-3374992-2934992-2936025(Top 23%)5494(Top 36%)5494(Top 104%)
Half13.11 mi0.68 mi5490-905068-765068-766761(Top 25%)6068(Top 40%)6068(Top 115%)
25K15.53 mi2.42 mi5922-4325420-3525420-3528146(Top 31%)6897(Top 45%)6897(Top 131%)
30K18.64 mi3.11 mi6662-7405961-5415961-54111744(Top 44%)8685(Top 57%)8685(Top 164%)
20M20.00 mi1.36 mi6960-2986177-2166177-21612186(Top 46%)8778(Top 58%)8778(Top 166%)
21M21.00 mi1.00 mi7164-2046309-1326309-13212123(Top 46%)8628(Top 57%)8628(Top 163%)
35K21.75 mi0.75 mi7311-1476378-696378-6911876(Top 45%)8487(Top 56%)8487(Top 161%)
23M23.00 mi1.25 mi7381-706403-256403-259450(Top 35%)7196(Top 47%)7196(Top 136%)
24M24.00 mi1.00 mi7468-876444-416444-4110368(Top 39%)7577(Top 50%)7577(Top 143%)
40K24.85 mi0.85 mi7446+226402+426402+427434(Top 28%)5894(Top 39%)5894(Top 112%)
25.2M25.20 mi0.35 mi7496-506432-306432-3010929(Top 41%)7740(Top 51%)7740(Top 146%)
Finish26.22 mi1.02 mi7638-1426509-776509-7711580(Top 43%)8073(Top 53%)8073(Top 153%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5164

Males

4781

M18-39

4781

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5167

Males

4781

M18-39

4781

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5164

Males

4781

M18-39

4781

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6025

Males

5494

M18-39

5494

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

6761

Males

6068

M18-39

6068

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8146

Males

6897

M18-39

6897

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11744

Males

8685

M18-39

8685

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12186

Males

8778

M18-39

8778

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12123

Males

8628

M18-39

8628

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

11876

Males

8487

M18-39

8487

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9450

Males

7196

M18-39

7196

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10368

Males

7577

M18-39

7577

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7434

Males

5894

M18-39

5894

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10929

Males

7740

M18-39

7740

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11580

Males

8073

M18-39

8073

Passing Analysis

Category:
Athletes Passed
591
Passed By
3220
Net Change
-2629
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5009
5K → 10K173230-57#5009#5066
10K → 15K111108+3#5066#5063
15K → 20K37374-337#5063#5400
20K → Half696-90#5400#5490
Half → 25K12444-432#5490#5922
25K → 30K19759-740#5922#6662
30K → 20M12310-298#6662#6960
20M → 21M21225-204#6960#7164
21M → 35K10157-147#7164#7311
35K → 23M57127-70#7311#7381
23M → 24M32119-87#7381#7468
24M → 40K6745+22#7468#7446
40K → 25.2M656-50#7446#7496
25.2M → Finish28170-142#7496#7638
TOTALS5913220-2629
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing