Boston Marathon logo
BOSTON MARATHON 2023

David Ocallaghan

Bib: 2954•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M40-44)
#0 / 2241
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:05
Rank: #2097
Start → 5K
20:05 | 6:28/mi
10K· 6.21 mi
40:18
Rank: #2424 (-327)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:00:54
Rank: #2722 (-298)
10K → 15K
20:36 | 6:38/mi
20K· 12.43 mi
1:21:40
Rank: #2881 (-159)
15K → 20K
20:46 | 6:41/mi
Half· 13.11 mi
1:26:15
Rank: #2944 (-63)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:42:44
Rank: #3086 (-142)
Half → 25K
16:29 | 6:48/mi
30K· 18.64 mi
2:04:30
Rank: #3272 (-186)
25K → 30K
21:46 | 7:00/mi
20M
2:14:03
Rank: #3306 (-34)
30K → 20M
9:33 | 7:02/mi
21M
2:21:25
Rank: #3320 (-14)
20M → 21M
7:22 | 7:22/mi
35K· 21.75 mi
2:26:35
Rank: #3363 (-43)
21M → 35K
5:10 | 6:54/mi
23M
2:35:43
Rank: #3495 (-132)
35K → 23M
9:08 | 7:18/mi
24M
2:42:45
Rank: #3560 (-65)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
2:48:52
Rank: #3596 (-36)
24M → 40K
6:07 | 7:09/mi
25.2M
2:51:25
Rank: #3585 (+11)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:58:01
Rank: #3493 (+92)
25.2M → Finish
6:36 | 6:29/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
Time1:26:15
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:31:46
Pace7:00 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4720:056:2820:05
6:28
-
10K
6.21 mi10:41:0040:186:2920:13
6:30
+0:02
15K
9.32 mi11:01:361:00:546:3220:36
6:38
+0:08
20K
12.43 mi11:22:221:21:406:3420:46
6:41
+0:03
Half
13.11 mi11:26:571:26:156:354:35
6:43
+0:02
25K
15.53 mi11:43:261:42:446:3716:29
6:48
+0:05
30K
18.64 mi12:05:122:04:306:4121:46
7:00
+0:12
20M
20.00 mi12:14:452:14:036:429:33
7:02
+0:02
21M
21.00 mi12:22:072:21:256:447:22
7:22
+0:20
35K
21.75 mi12:27:172:26:356:445:10
6:54
-0:28
23M
23.00 mi12:36:252:35:436:469:08
7:18
+0:24
24M
24.00 mi12:43:272:42:456:477:02
7:02
-0:16
40K
24.85 mi12:49:342:48:526:486:07
7:09
+0:07
25.2M
25.20 mi12:52:072:51:256:482:33
7:24
+0:15
Finish
26.22 mi12:58:432:58:016:486:36
6:29
-0:55

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

6:48 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:51

86% of race

Time at Steady Pace

25:10

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:47 /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 mi10:20:4720:056:2820:05
6:28
#2097
10K
6.21 mi10:41:0040:186:2920:13
6:30
#2424
15K
9.32 mi11:01:361:00:546:3220:36
6:38
#2722
20K
12.43 mi11:22:221:21:406:3420:46
6:41
#2881
Half
13.11 mi11:26:571:26:156:354:35
6:43
#2944
25K
15.53 mi11:43:261:42:446:3716:29
6:48
#3086
30K
18.64 mi12:05:122:04:306:4121:46
7:00
#3272
20M
20.00 mi12:14:452:14:036:429:33
7:02
#3306
21M
21.00 mi12:22:072:21:256:447:22
7:22
#3320
35K
21.75 mi12:27:172:26:356:445:10
6:54
#3363
23M
23.00 mi12:36:252:35:436:469:08
7:18
#3495
24M
24.00 mi12:43:272:42:456:477:02
7:02
#3560
40K
24.85 mi12:49:342:48:526:486:07
7:09
#3596
25.2M
25.20 mi12:52:072:51:256:482:33
7:24
#3585
Finish
26.22 mi12:58:432:58:016:486:36
6:29
#3493
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2097200220023546(Top 13%)3353(Top 22%)3353(Top 150%)
10K6.21 mi3.10 mi2424-3272315-3132315-3132840(Top 11%)2714(Top 18%)2714(Top 121%)
15K9.32 mi3.11 mi2722-2982599-2842599-2843546(Top 13%)3353(Top 22%)3353(Top 150%)
20K12.43 mi3.11 mi2881-1592751-1522751-1523438(Top 13%)3257(Top 21%)3257(Top 145%)
Half13.11 mi0.68 mi2944-632811-602811-604440(Top 17%)4132(Top 27%)4132(Top 184%)
25K15.53 mi2.42 mi3086-1422943-1322943-1324111(Top 15%)3851(Top 25%)3851(Top 172%)
30K18.64 mi3.11 mi3272-1863110-1673110-1674361(Top 16%)4049(Top 27%)4049(Top 181%)
20M20.00 mi1.36 mi3306-343132-223132-224166(Top 16%)3845(Top 25%)3845(Top 172%)
21M21.00 mi1.00 mi3320-143145-133145-133951(Top 15%)3643(Top 24%)3643(Top 163%)
35K21.75 mi0.75 mi3363-433184-393184-394760(Top 18%)4296(Top 28%)4296(Top 192%)
23M23.00 mi1.25 mi3495-1323303-1193303-1195256(Top 20%)4643(Top 31%)4643(Top 207%)
24M24.00 mi1.00 mi3560-653364-613364-614819(Top 18%)4288(Top 28%)4288(Top 191%)
40K24.85 mi0.85 mi3596-363388-243388-244616(Top 17%)4067(Top 27%)4067(Top 181%)
25.2M25.20 mi0.35 mi3585+113378+103378+103377(Top 13%)3060(Top 20%)3060(Top 137%)
Finish26.22 mi1.02 mi3493+923289+893289+892378(Top 9%)2196(Top 14%)2196(Top 98%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3546

Males

3353

M40-44

3353

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2840

Males

2714

M40-44

2714

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3546

Males

3353

M40-44

3353

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3438

Males

3257

M40-44

3257

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4440

Males

4132

M40-44

4132

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4111

Males

3851

M40-44

3851

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4361

Males

4049

M40-44

4049

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4166

Males

3845

M40-44

3845

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

3951

Males

3643

M40-44

3643

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4760

Males

4296

M40-44

4296

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5256

Males

4643

M40-44

4643

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4819

Males

4288

M40-44

4288

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4616

Males

4067

M40-44

4067

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3377

Males

3060

M40-44

3060

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2378

Males

2196

M40-44

2196

Passing Analysis

Category:
Athletes Passed
476
Passed By
1872
Net Change
-1396
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2097
5K → 10K28355-327#2097#2424
10K → 15K7305-298#2424#2722
15K → 20K33192-159#2722#2881
20K → Half366-63#2881#2944
Half → 25K24166-142#2944#3086
25K → 30K41227-186#3086#3272
30K → 20M5387-34#3272#3306
20M → 21M5064-14#3306#3320
21M → 35K1457-43#3320#3363
35K → 23M33165-132#3363#3495
23M → 24M2287-65#3495#3560
24M → 40K3268-36#3560#3596
40K → 25.2M2413+11#3596#3585
25.2M → Finish11220+92#3585#3493
TOTALS4761872-1396
📊

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