Boston Marathon logo
BOSTON MARATHON 2023

John Moriarty

Bib: 17945•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:22/mi
25:59
↑ 97↓ 3451.5%
10K· 6.21 mi
8:05/mi
51:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:16:02
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:41:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:46:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:08/mi
2:06:25
↑ 66↓ 880.2%
30K· 18.64 mi
8:27/mi
2:32:40
↑ 181↓ 1480.2%
20M
8:41/mi
2:44:28
↑ 64↓ 500.2%
21M
9:42/mi
2:54:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:31/mi
3:00:32
↑ 17↓ 861.7%
23M
8:54/mi
3:11:41
↑ 23↓ 630.6%
24M
8:49/mi
3:20:30
↓ 821.3%
40K· 24.85 mi
8:54/mi
3:28:07
↓ 200.3%
25.2M
9:40/mi
3:31:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:51/mi
3:40:28
↑ 22↓ 21

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
Time1:46:41
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:53:47
Pace8:41 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4225:598:2225:59
8:22
-
10K
6.21 mi11:41:4951:068:1325:07
8:05
-0:17
15K
9.32 mi12:06:451:16:028:0924:56
8:02
-0:03
20K
12.43 mi12:32:011:41:188:0925:16
8:08
+0:06
Half
13.11 mi12:37:241:46:418:085:23
7:53
-0:15
25K
15.53 mi12:57:082:06:258:0819:44
8:08
+0:15
30K
18.64 mi13:23:232:32:408:1126:15
8:27
+0:19
20M
20.00 mi13:35:112:44:288:1311:48
8:41
+0:14
21M
21.00 mi13:44:532:54:108:189:42
9:42
+1:01
35K
21.75 mi13:51:153:00:328:186:22
8:31
-1:11
23M
23.00 mi14:02:243:11:418:2011:09
8:54
+0:23
24M
24.00 mi14:11:133:20:308:218:49
8:49
-0:05
40K
24.85 mi14:18:503:28:078:227:37
8:54
+0:05
25.2M
25.20 mi14:22:103:31:278:233:20
9:40
+0:46
Finish
26.22 mi14:31:113:40:288:259:01
8:51
-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

7:53 /mi

Average Pace

8:25 /mi

Slowest Pace

9:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:26

46% of race

Time at Steady Pace

1:10:24

32% of race

Time at Slower Pace

49:38

23% of race

Average Pace: 8:25 /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 mi11:16:4225:598:2225:59
8:22
#16590
10K
6.21 mi11:41:4951:068:1325:07
8:05
#15980
15K
9.32 mi12:06:451:16:028:0924:56
8:02
#15524
20K
12.43 mi12:32:011:41:188:0925:16
8:08
#15261
Half
13.11 mi12:37:241:46:418:085:23
7:53
#15158
25K
15.53 mi12:57:082:06:258:0819:44
8:08
#14904
30K
18.64 mi13:23:232:32:408:1126:15
8:27
#14724
20M
20.00 mi13:35:112:44:288:1311:48
8:41
#14721
21M
21.00 mi13:44:532:54:108:189:42
9:42
#14849
35K
21.75 mi13:51:153:00:328:186:22
8:31
#14850
23M
23.00 mi14:02:243:11:418:2011:09
8:54
#14892
24M
24.00 mi14:11:133:20:308:218:49
8:49
#14925
40K
24.85 mi14:18:503:28:078:227:37
8:54
#14933
25.2M
25.20 mi14:22:103:31:278:233:20
9:40
#14940
Finish
26.22 mi14:31:113:40:288:259:01
8:51
#15056
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi16590109081090814579(Top 55%)10131(Top 67%)10131(Top 712%)
10K6.21 mi3.10 mi15980+61010690+21810690+21815396(Top 58%)10468(Top 69%)10468(Top 736%)
15K9.32 mi3.11 mi15524+45610513+17710513+17714579(Top 55%)10131(Top 67%)10131(Top 712%)
20K12.43 mi3.11 mi15261+26310396+11710396+11714443(Top 54%)10059(Top 66%)10059(Top 707%)
Half13.11 mi0.68 mi15158+10310361+3510361+3513483(Top 51%)9688(Top 64%)9688(Top 681%)
25K15.53 mi2.42 mi14904+25410236+12510236+12513782(Top 52%)9681(Top 64%)9681(Top 681%)
30K18.64 mi3.11 mi14724+18010135+10110135+10113983(Top 53%)9643(Top 64%)9643(Top 678%)
20M20.00 mi1.36 mi14721+310113+2210113+2214736(Top 55%)9871(Top 65%)9871(Top 694%)
21M21.00 mi1.00 mi14849-12810136-2310136-2316825(Top 63%)10713(Top 71%)10713(Top 753%)
35K21.75 mi0.75 mi14850-110116+2010116+2015353(Top 58%)10006(Top 66%)10006(Top 704%)
23M23.00 mi1.25 mi14892-4210106+1010106+1015549(Top 58%)10051(Top 66%)10051(Top 707%)
24M24.00 mi1.00 mi14925-3310098+810098+816264(Top 61%)10288(Top 68%)10288(Top 723%)
40K24.85 mi0.85 mi14933-810075+2310075+2315645(Top 59%)9971(Top 66%)9971(Top 701%)
25.2M25.20 mi0.35 mi14940-710070+510070+515907(Top 60%)10071(Top 66%)10071(Top 708%)
Finish26.22 mi1.02 mi15056-11610096-2610096-2617248(Top 65%)10720(Top 71%)10720(Top 754%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14579

Males

10131

M55-59

10131

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

15396

Males

10468

M55-59

10468

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14579

Males

10131

M55-59

10131

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14443

Males

10059

M55-59

10059

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13483

Males

9688

M55-59

9688

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13782

Males

9681

M55-59

9681

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

13983

Males

9643

M55-59

9643

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14736

Males

9871

M55-59

9871

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

16825

Males

10713

M55-59

10713

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15353

Males

10006

M55-59

10006

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15549

Males

10051

M55-59

10051

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16264

Males

10288

M55-59

10288

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15645

Males

9971

M55-59

9971

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15907

Males

10071

M55-59

10071

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17248

Males

10720

M55-59

10720

Passing Analysis

Category:
Athletes Passed
2608
Passed By
1074
Net Change
+1534
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16590
5K → 10K719109+610#16590#15980
10K → 15K50549+456#15980#15524
15K → 20K32259+263#15524#15261
20K → Half1085+103#15261#15158
Half → 25K28329+254#15158#14904
25K → 30K25979+180#14904#14724
30K → 20M8481+3#14724#14721
20M → 21M47175-128#14721#14849
21M → 35K4748-1#14849#14850
35K → 23M72114-42#14850#14892
23M → 24M4982-33#14892#14925
24M → 40K5967-8#14925#14933
40K → 25.2M3037-7#14933#14940
25.2M → Finish24140-116#14940#15056
TOTALS26081074+1534
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing