Boston Marathon logo
BOSTON MARATHON 2023

Dominic Lachapelle

Bib: 13196•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 48%
Masters (Masters Men)
#0 / 9891
Top 36%
Division (M45-49)
#0 / 2252
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:07
Rank: #9131
Start → 5K
23:07 | 7:26/mi
10K· 6.21 mi
46:18
Rank: #9581 (-450)
5K → 10K
23:11 | 7:28/mi
15K· 9.32 mi
1:10:01
Rank: #10167 (-586)
10K → 15K
23:43 | 7:38/mi
20K· 12.43 mi
1:33:13
Rank: #9838 (+329)
15K → 20K
23:12 | 7:28/mi
Half· 13.11 mi
1:38:10
Rank: #9741 (+97)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:56:25
Rank: #9592 (+149)
Half → 25K
18:15 | 7:32/mi
30K· 18.64 mi
2:20:30
Rank: #9454 (+138)
25K → 30K
24:05 | 7:45/mi
20M
2:31:08
Rank: #9413 (+41)
30K → 20M
10:38 | 7:49/mi
21M
2:39:29
Rank: #9377 (+36)
20M → 21M
8:21 | 8:21/mi
35K· 21.75 mi
2:44:47
Rank: #9214 (+163)
21M → 35K
5:18 | 7:05/mi
23M
2:54:23
Rank: #9097 (+117)
35K → 23M
9:36 | 7:40/mi
24M
3:01:40
Rank: #8937 (+160)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:08:09
Rank: #8866 (+71)
24M → 40K
6:29 | 7:35/mi
25.2M
3:11:00
Rank: #8819 (+47)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:18:39
Rank: #8784 (+35)
25.2M → Finish
7:39 | 7:30/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
Time1:38:10
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:40:29
Pace7:40 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3123:077:2623:07
7:26
-
10K
6.21 mi11:14:4246:187:2723:11
7:28
+0:02
15K
9.32 mi11:38:251:10:017:3123:43
7:38
+0:10
20K
12.43 mi12:01:371:33:137:3023:12
7:28
-0:10
Half
13.11 mi12:06:341:38:107:294:57
7:15
-0:13
25K
15.53 mi12:24:491:56:257:3018:15
7:32
+0:17
30K
18.64 mi12:48:542:20:307:3224:05
7:45
+0:13
20M
20.00 mi12:59:322:31:087:3310:38
7:49
+0:04
21M
21.00 mi13:07:532:39:297:368:21
8:21
+0:32
35K
21.75 mi13:13:112:44:477:355:18
7:05
-1:16
23M
23.00 mi13:22:472:54:237:359:36
7:40
+0:35
24M
24.00 mi13:30:043:01:407:347:17
7:17
-0:23
40K
24.85 mi13:36:333:08:097:346:29
7:35
+0:18
25.2M
25.20 mi13:39:243:11:007:352:51
8:16
+0:41
Finish
26.22 mi13:47:033:18:397:357:39
7:30
-0:46

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

7:05 /mi

Average Pace

7:35 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:49

89% of race

Time at Steady Pace

21:50

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:35 /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 mi10:51:3123:077:2623:07
7:26
#9131
10K
6.21 mi11:14:4246:187:2723:11
7:28
#9581
15K
9.32 mi11:38:251:10:017:3123:43
7:38
#10167
20K
12.43 mi12:01:371:33:137:3023:12
7:28
#9838
Half
13.11 mi12:06:341:38:107:294:57
7:15
#9741
25K
15.53 mi12:24:491:56:257:3018:15
7:32
#9592
30K
18.64 mi12:48:542:20:307:3224:05
7:45
#9454
20M
20.00 mi12:59:322:31:087:3310:38
7:49
#9413
21M
21.00 mi13:07:532:39:297:368:21
8:21
#9377
35K
21.75 mi13:13:112:44:477:355:18
7:05
#9214
23M
23.00 mi13:22:472:54:237:359:36
7:40
#9097
24M
24.00 mi13:30:043:01:407:347:17
7:17
#8937
40K
24.85 mi13:36:333:08:097:346:29
7:35
#8866
25.2M
25.20 mi13:39:243:11:007:352:51
8:16
#8819
Finish
26.22 mi13:47:033:18:397:357:39
7:30
#8784
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi91317677767711277(Top 42%)8752(Top 58%)8752(Top 389%)
10K6.21 mi3.10 mi9581-4507922-2457922-24510153(Top 38%)8248(Top 54%)8248(Top 366%)
15K9.32 mi3.11 mi10167-5868262-3408262-34011277(Top 42%)8752(Top 58%)8752(Top 389%)
20K12.43 mi3.11 mi9838+3298055+2078055+2079044(Top 34%)7525(Top 50%)7525(Top 334%)
Half13.11 mi0.68 mi9741+978002+538002+538238(Top 31%)7052(Top 46%)7052(Top 313%)
25K15.53 mi2.42 mi9592+1497895+1077895+1078962(Top 34%)7409(Top 49%)7409(Top 329%)
30K18.64 mi3.11 mi9454+1387772+1237772+1238994(Top 34%)7278(Top 48%)7278(Top 323%)
20M20.00 mi1.36 mi9413+417727+457727+459041(Top 34%)7216(Top 48%)7216(Top 320%)
21M21.00 mi1.00 mi9377+367681+467681+469500(Top 36%)7338(Top 48%)7338(Top 326%)
35K21.75 mi0.75 mi9214+1637567+1147567+1145840(Top 22%)5130(Top 34%)5130(Top 228%)
23M23.00 mi1.25 mi9097+1177471+967471+967540(Top 28%)6149(Top 41%)6149(Top 273%)
24M24.00 mi1.00 mi8937+1607354+1177354+1176274(Top 24%)5271(Top 35%)5271(Top 234%)
40K24.85 mi0.85 mi8866+717287+677287+677207(Top 27%)5755(Top 38%)5755(Top 256%)
25.2M25.20 mi0.35 mi8819+477252+357252+358037(Top 30%)6197(Top 41%)6197(Top 275%)
Finish26.22 mi1.02 mi8784+357217+357217+358582(Top 32%)6512(Top 43%)6512(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11277

Males

8752

M45-49

8752

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10153

Males

8248

M45-49

8248

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11277

Males

8752

M45-49

8752

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9044

Males

7525

M45-49

7525

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8238

Males

7052

M45-49

7052

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8962

Males

7409

M45-49

7409

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

8994

Males

7278

M45-49

7278

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9041

Males

7216

M45-49

7216

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9500

Males

7338

M45-49

7338

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5840

Males

5130

M45-49

5130

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7540

Males

6149

M45-49

6149

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6274

Males

5271

M45-49

5271

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7207

Males

5755

M45-49

5755

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8037

Males

6197

M45-49

6197

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8582

Males

6512

M45-49

6512

Passing Analysis

Category:
Athletes Passed
1969*
Passed By
1620
Net Change
+347
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9131
5K → 10K126576-450#9131#9581
10K → 15K55639-586#9581#10167
15K → 20K364*35+329#10167#9838
20K → Half992+97#9838#9741
Half → 25K19344+149#9741#9592
25K → 30K234*96+138#9592#9454
30K → 20M10362+41#9454#9413
20M → 21M10064+36#9413#9377
21M → 35K1630+163#9377#9214
35K → 23M14528+117#9214#9097
23M → 24M1699+160#9097#8937
24M → 40K8817+71#8937#8866
40K → 25.2M547+47#8866#8819
25.2M → Finish7641+35#8819#8784
TOTALS1969*1620+347

* 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