Boston Marathon logo
BOSTON MARATHON 2023

Dennis Ehrhardt

Bib: 13809•M

NJ

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 50%
Masters (Masters Men)
#0 / 9891
Top 39%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:53
Rank: #11321
Start → 5K
23:53 | 7:41/mi
10K· 6.21 mi
47:29
Rank: #11267 (+54)
5K → 10K
23:36 | 7:36/mi
15K· 9.32 mi
1:11:03
Rank: #11122 (+145)
10K → 15K
23:34 | 7:35/mi
20K· 12.43 mi
1:35:03
Rank: #11088 (+34)
15K → 20K
24:00 | 7:43/mi
Half· 13.11 mi
1:40:01
Rank: #10961 (+127)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:58:35
Rank: #10758 (+203)
Half → 25K
18:34 | 7:39/mi
30K· 18.64 mi
2:22:27
Rank: #10297 (+461)
25K → 30K
23:52 | 7:41/mi
20M
2:33:02
Rank: #10171 (+126)
30K → 20M
10:35 | 7:47/mi
21M
2:41:00
Rank: #9950 (+221)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:46:35
Rank: #9871 (+79)
21M → 35K
5:35 | 7:28/mi
23M
2:56:20
Rank: #9735 (+136)
35K → 23M
9:45 | 7:47/mi
24M
3:03:55
Rank: #9638 (+97)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:10:32
Rank: #9546 (+92)
24M → 40K
6:37 | 7:44/mi
25.2M
3:13:19
Rank: #9490 (+56)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:20:44
Rank: #9384 (+106)
25.2M → Finish
7:25 | 7:17/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 Half⚖️ Balanced
Distance13.11 mi
Time1:40:01
Pace7:38 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:43
Pace7:41 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4023:537:4123:53
7:41
-
10K
6.21 mi11:16:1647:297:3923:36
7:36
-0:05
15K
9.32 mi11:39:501:11:037:3723:34
7:35
-0:01
20K
12.43 mi12:03:501:35:037:3924:00
7:43
+0:08
Half
13.11 mi12:08:481:40:017:384:58
7:17
-0:26
25K
15.53 mi12:27:221:58:357:3818:34
7:39
+0:22
30K
18.64 mi12:51:142:22:277:3923:52
7:41
+0:02
20M
20.00 mi13:01:492:33:027:3910:35
7:47
+0:06
21M
21.00 mi13:09:472:41:007:407:58
7:58
+0:11
35K
21.75 mi13:15:222:46:357:405:35
7:28
-0:30
23M
23.00 mi13:25:072:56:207:409:45
7:47
+0:19
24M
24.00 mi13:32:423:03:557:407:35
7:35
-0:12
40K
24.85 mi13:39:193:10:327:406:37
7:44
+0:09
25.2M
25.20 mi13:42:063:13:197:402:47
8:04
+0:20
Finish
26.22 mi13:49:313:20:447:407:25
7:17
-0:47

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

7:17 /mi

Average Pace

7:40 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:57

99% of race

Time at Steady Pace

2:47

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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 mi10:52:4023:537:4123:53
7:41
#11321
10K
6.21 mi11:16:1647:297:3923:36
7:36
#11267
15K
9.32 mi11:39:501:11:037:3723:34
7:35
#11122
20K
12.43 mi12:03:501:35:037:3924:00
7:43
#11088
Half
13.11 mi12:08:481:40:017:384:58
7:17
#10961
25K
15.53 mi12:27:221:58:357:3818:34
7:39
#10758
30K
18.64 mi12:51:142:22:277:3923:52
7:41
#10297
20M
20.00 mi13:01:492:33:027:3910:35
7:47
#10171
21M
21.00 mi13:09:472:41:007:407:58
7:58
#9950
35K
21.75 mi13:15:222:46:357:405:35
7:28
#9871
23M
23.00 mi13:25:072:56:207:409:45
7:47
#9735
24M
24.00 mi13:32:423:03:557:407:35
7:35
#9638
40K
24.85 mi13:39:193:10:327:406:37
7:44
#9546
25.2M
25.20 mi13:42:063:13:197:402:47
8:04
#9490
Finish
26.22 mi13:49:313:20:447:407:25
7:17
#9384
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi113218804880410865(Top 41%)8581(Top 57%)8581(Top 381%)
10K6.21 mi3.10 mi11267+548775+298775+2911279(Top 42%)8781(Top 58%)8781(Top 390%)
15K9.32 mi3.11 mi11122+1458705+708705+7010865(Top 41%)8581(Top 57%)8581(Top 381%)
20K12.43 mi3.11 mi11088+348696+98696+911095(Top 42%)8620(Top 57%)8620(Top 383%)
Half13.11 mi0.68 mi10961+1278631+658631+658438(Top 32%)7177(Top 47%)7177(Top 319%)
25K15.53 mi2.42 mi10758+2038515+1168515+1169943(Top 37%)7946(Top 52%)7946(Top 353%)
30K18.64 mi3.11 mi10297+4618230+2858230+2858515(Top 32%)6992(Top 46%)6992(Top 310%)
20M20.00 mi1.36 mi10171+1268145+858145+858757(Top 33%)7055(Top 46%)7055(Top 313%)
21M21.00 mi1.00 mi9950+2218012+1338012+1337144(Top 27%)5960(Top 39%)5960(Top 265%)
35K21.75 mi0.75 mi9871+797954+587954+588260(Top 31%)6661(Top 44%)6661(Top 296%)
23M23.00 mi1.25 mi9735+1367842+1127842+1128324(Top 31%)6599(Top 43%)6599(Top 293%)
24M24.00 mi1.00 mi9638+977767+757767+758280(Top 31%)6485(Top 43%)6485(Top 288%)
40K24.85 mi0.85 mi9546+927689+787689+788224(Top 31%)6388(Top 42%)6388(Top 284%)
25.2M25.20 mi0.35 mi9490+567642+477642+476904(Top 26%)5536(Top 36%)5536(Top 246%)
Finish26.22 mi1.02 mi9384+1067560+827560+826966(Top 26%)5549(Top 37%)5549(Top 246%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10865

Males

8581

M45-49

8581

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11279

Males

8781

M45-49

8781

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10865

Males

8581

M45-49

8581

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11095

Males

8620

M45-49

8620

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

8438

Males

7177

M45-49

7177

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9943

Males

7946

M45-49

7946

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8515

Males

6992

M45-49

6992

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8757

Males

7055

M45-49

7055

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7144

Males

5960

M45-49

5960

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8260

Males

6661

M45-49

6661

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8324

Males

6599

M45-49

6599

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8280

Males

6485

M45-49

6485

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8224

Males

6388

M45-49

6388

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6904

Males

5536

M45-49

5536

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6966

Males

5549

M45-49

5549

Passing Analysis

Category:
Athletes Passed
2636*
Passed By
699
Net Change
+1937
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11321
5K → 10K326272+54#11321#11267
10K → 15K266121+145#11267#11122
15K → 20K172138+34#11122#11088
20K → Half1270+127#11088#10961
Half → 25K23633+203#10961#10758
25K → 30K47817+461#10758#10297
30K → 20M148*22+126#10297#10171
20M → 21M227*6+221#10171#9950
21M → 35K878+79#9950#9871
35K → 23M15923+136#9871#9735
23M → 24M11821+97#9735#9638
24M → 40K106*14+92#9638#9546
40K → 25.2M604+56#9546#9490
25.2M → Finish12620+106#9490#9384
TOTALS2636*699+1937

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

📊

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