Boston Marathon logo
BOSTON MARATHON 2023

Matthew Rosenthal

Bib: 3968•M

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 24%
Division (M18-39)
#0 / 5285
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:04
Rank: #4482
Start → 5K
21:04 | 6:47/mi
10K· 6.21 mi
41:57
Rank: #4492 (-10)
5K → 10K
20:53 | 6:43/mi
15K· 9.32 mi
1:02:56
Rank: #4527 (-35)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:24:10
Rank: #4577 (-50)
15K → 20K
21:14 | 6:50/mi
Half· 13.11 mi
1:28:44
Rank: #4545 (+32)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:45:19
Rank: #4501 (+44)
Half → 25K
16:35 | 6:50/mi
30K· 18.64 mi
2:07:05
Rank: #4454 (+47)
25K → 30K
21:46 | 7:00/mi
20M
2:16:41
Rank: #4459 (-5)
30K → 20M
9:36 | 7:04/mi
21M
2:24:03
Rank: #4401 (+58)
20M → 21M
7:22 | 7:22/mi
35K· 21.75 mi
2:29:05
Rank: #4350 (+51)
21M → 35K
5:02 | 6:44/mi
23M
2:37:50
Rank: #4286 (+64)
35K → 23M
8:45 | 6:59/mi
24M
2:44:25
Rank: #4187 (+99)
23M → 24M
6:35 | 6:35/mi
40K· 24.85 mi
2:50:10
Rank: #4083 (+104)
24M → 40K
5:45 | 6:44/mi
25.2M
2:52:38
Rank: #4034 (+49)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:59:13
Rank: #3929 (+105)
25.2M → Finish
6:35 | 6:28/mi

Course Map & Elevation

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
Time1:28:44
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:30:29
Pace6:54 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5521:046:4721:04
6:47
-
10K
6.21 mi10:45:4841:576:4520:53
6:43
-0:04
15K
9.32 mi11:06:471:02:566:4520:59
6:45
+0:02
20K
12.43 mi11:28:011:24:106:4621:14
6:50
+0:05
Half
13.11 mi11:32:351:28:446:464:34
6:42
-0:08
25K
15.53 mi11:49:101:45:196:4716:35
6:50
+0:08
30K
18.64 mi12:10:562:07:056:4921:46
7:00
+0:10
20M
20.00 mi12:20:322:16:416:509:36
7:04
+0:04
21M
21.00 mi12:27:542:24:036:527:22
7:22
+0:18
35K
21.75 mi12:32:562:29:056:515:02
6:44
-0:38
23M
23.00 mi12:41:412:37:506:528:45
6:59
+0:15
24M
24.00 mi12:48:162:44:256:516:35
6:35
-0:24
40K
24.85 mi12:54:012:50:106:515:45
6:44
+0:09
25.2M
25.20 mi12:56:292:52:386:512:28
7:09
+0:25
Finish
26.22 mi13:03:042:59:136:506:35
6:28
-0:41

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

6:28 /mi

Average Pace

6:50 /mi

Slowest Pace

7:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:49:23

95% of race

Time at Steady Pace

9:50

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:24:5521:046:4721:04
6:47
#4482
10K
6.21 mi10:45:4841:576:4520:53
6:43
#4492
15K
9.32 mi11:06:471:02:566:4520:59
6:45
#4527
20K
12.43 mi11:28:011:24:106:4621:14
6:50
#4577
Half
13.11 mi11:32:351:28:446:464:34
6:42
#4545
25K
15.53 mi11:49:101:45:196:4716:35
6:50
#4501
30K
18.64 mi12:10:562:07:056:4921:46
7:00
#4454
20M
20.00 mi12:20:322:16:416:509:36
7:04
#4459
21M
21.00 mi12:27:542:24:036:527:22
7:22
#4401
35K
21.75 mi12:32:562:29:056:515:02
6:44
#4350
23M
23.00 mi12:41:412:37:506:528:45
6:59
#4286
24M
24.00 mi12:48:162:44:256:516:35
6:35
#4187
40K
24.85 mi12:54:012:50:106:515:45
6:44
#4083
25.2M
25.20 mi12:56:292:52:386:512:28
7:09
#4034
Finish
26.22 mi13:03:042:59:136:506:35
6:28
#3929
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4482418441844644(Top 17%)4337(Top 29%)4337(Top 82%)
10K6.21 mi3.10 mi4492-104199-154199-154555(Top 17%)4252(Top 28%)4252(Top 80%)
15K9.32 mi3.11 mi4527-354229-304229-304644(Top 17%)4337(Top 29%)4337(Top 82%)
20K12.43 mi3.11 mi4577-504272-434272-434748(Top 18%)4410(Top 29%)4410(Top 83%)
Half13.11 mi0.68 mi4545+324243+294243+294247(Top 16%)3971(Top 26%)3971(Top 75%)
25K15.53 mi2.42 mi4501+444207+364207+364482(Top 17%)4174(Top 28%)4174(Top 79%)
30K18.64 mi3.11 mi4454+474161+464161+464371(Top 16%)4059(Top 27%)4059(Top 77%)
20M20.00 mi1.36 mi4459-54162-14162-14394(Top 17%)4043(Top 27%)4043(Top 76%)
21M21.00 mi1.00 mi4401+584111+514111+513963(Top 15%)3655(Top 24%)3655(Top 69%)
35K21.75 mi0.75 mi4350+514062+494062+493726(Top 14%)3443(Top 23%)3443(Top 65%)
23M23.00 mi1.25 mi4286+644010+524010+523718(Top 14%)3432(Top 23%)3432(Top 65%)
24M24.00 mi1.00 mi4187+993918+923918+922501(Top 9%)2337(Top 15%)2337(Top 44%)
40K24.85 mi0.85 mi4083+1043820+983820+982489(Top 9%)2309(Top 15%)2309(Top 44%)
25.2M25.20 mi0.35 mi4034+493774+463774+462365(Top 9%)2198(Top 14%)2198(Top 42%)
Finish26.22 mi1.02 mi3929+1053681+933681+932311(Top 9%)2139(Top 14%)2139(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4644

Males

4337

M18-39

4337

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4555

Males

4252

M18-39

4252

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4644

Males

4337

M18-39

4337

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4748

Males

4410

M18-39

4410

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4247

Males

3971

M18-39

3971

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4482

Males

4174

M18-39

4174

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4371

Males

4059

M18-39

4059

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4394

Males

4043

M18-39

4043

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

3963

Males

3655

M18-39

3655

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3726

Males

3443

M18-39

3443

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3718

Males

3432

M18-39

3432

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2501

Males

2337

M18-39

2337

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2489

Males

2309

M18-39

2309

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2365

Males

2198

M18-39

2198

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2311

Males

2139

M18-39

2139

Passing Analysis

Category:
Athletes Passed
1386
Passed By
833
Net Change
+553
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4482
5K → 10K203213-10#4482#4492
10K → 15K103138-35#4492#4527
15K → 20K86136-50#4527#4577
20K → Half408+32#4577#4545
Half → 25K10460+44#4545#4501
25K → 30K14699+47#4501#4454
30K → 20M6065-5#4454#4459
20M → 21M8931+58#4459#4401
21M → 35K6817+51#4401#4350
35K → 23M10238+64#4350#4286
23M → 24M11112+99#4286#4187
24M → 40K1106+104#4187#4083
40K → 25.2M512+49#4083#4034
25.2M → Finish1138+105#4034#3929
TOTALS1386833+553
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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