Boston Marathon logo
BOSTON MARATHON 2023

John Hammond

Bib: 8426•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 50%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
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
22:44
Rank: #8215
Start → 5K
22:44 | 7:19/mi
10K· 6.21 mi
45:54
Rank: #9088 (-873)
5K → 10K
23:10 | 7:27/mi
15K· 9.32 mi
1:09:16
Rank: #9443 (-355)
10K → 15K
23:22 | 7:31/mi
20K· 12.43 mi
1:33:17
Rank: #9883 (-440)
15K → 20K
24:01 | 7:44/mi
Half· 13.11 mi
1:38:27
Rank: #9932 (-49)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:57:11
Rank: #9999
Half → 25K
18:44 | 7:44/mi
30K· 18.64 mi
2:22:22
Rank: #10268
25K → 30K
25:11 | 8:06/mi
20M
2:34:32
Rank: #10748 (-480)
30K → 20M
12:10 | 8:57/mi
21M
2:45:07
Rank: #11541 (-793)
20M → 21M
10:35 | 10:35/mi
35K· 21.75 mi
2:51:23
Rank: #11675 (-134)
21M → 35K
6:16 | 8:23/mi
23M
3:02:54
Rank: #12061 (-386)
35K → 23M
11:31 | 9:12/mi
24M
3:11:53
Rank: #12346 (-285)
23M → 24M
8:59 | 8:59/mi
40K· 24.85 mi
3:19:59
Rank: #12642 (-296)
24M → 40K
8:06 | 9:28/mi
25.2M
3:23:48
Rank: #12837 (-195)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
3:33:31
Rank: #13186 (-349)
25.2M → Finish
9:43 | 9:32/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
Time1:38:27
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:55:04
Pace8:47 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:5922:447:1922:44
7:19
-
10K
6.21 mi11:11:0945:547:2323:10
7:27
+0:08
15K
9.32 mi11:34:311:09:167:2623:22
7:31
+0:04
20K
12.43 mi11:58:321:33:177:3024:01
7:44
+0:13
Half
13.11 mi12:03:421:38:277:315:10
7:34
-0:10
25K
15.53 mi12:22:261:57:117:3318:44
7:44
+0:10
30K
18.64 mi12:47:372:22:227:3825:11
8:06
+0:22
20M
20.00 mi12:59:472:34:327:4412:10
8:57
+0:51
21M
21.00 mi13:10:222:45:077:5210:35
10:35
+1:38
35K
21.75 mi13:16:382:51:237:536:16
8:23
-2:12
23M
23.00 mi13:28:093:02:547:5711:31
9:12
+0:49
24M
24.00 mi13:37:083:11:538:008:59
8:59
-0:13
40K
24.85 mi13:45:143:19:598:038:06
9:28
+0:29
25.2M
25.20 mi13:49:033:23:488:053:49
11:04
+1:36
Finish
26.22 mi13:58:463:33:318:099:43
9:32
-1:32

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

7:19 /mi

Average Pace

8:09 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:11

55% of race

Time at Steady Pace

31:27

15% of race

Time at Slower Pace

1:04:53

30% of race

Average Pace: 8:09 /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 mi10:47:5922:447:1922:44
7:19
#8215
10K
6.21 mi11:11:0945:547:2323:10
7:27
#9088
15K
9.32 mi11:34:311:09:167:2623:22
7:31
#9443
20K
12.43 mi11:58:321:33:177:3024:01
7:44
#9883
Half
13.11 mi12:03:421:38:277:315:10
7:34
#9932
25K
15.53 mi12:22:261:57:117:3318:44
7:44
#9999
30K
18.64 mi12:47:372:22:227:3825:11
8:06
#10268
20M
20.00 mi12:59:472:34:327:4412:10
8:57
#10748
21M
21.00 mi13:10:222:45:077:5210:35
10:35
#11541
35K
21.75 mi13:16:382:51:237:536:16
8:23
#11675
23M
23.00 mi13:28:093:02:547:5711:31
9:12
#12061
24M
24.00 mi13:37:083:11:538:008:59
8:59
#12346
40K
24.85 mi13:45:143:19:598:038:06
9:28
#12642
25.2M
25.20 mi13:49:033:23:488:053:49
11:04
#12837
Finish
26.22 mi13:58:463:33:318:099:43
9:32
#13186
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi82157119711910350(Top 39%)8334(Top 55%)8334(Top 370%)
10K6.21 mi3.10 mi9088-8737628-5097628-50910121(Top 38%)8237(Top 54%)8237(Top 366%)
15K9.32 mi3.11 mi9443-3557835-2077835-20710350(Top 39%)8334(Top 55%)8334(Top 370%)
20K12.43 mi3.11 mi9883-4408083-2488083-24811141(Top 42%)8648(Top 57%)8648(Top 384%)
Half13.11 mi0.68 mi9932-498110-278110-2710804(Top 41%)8530(Top 56%)8530(Top 379%)
25K15.53 mi2.42 mi9999-678126-168126-1610496(Top 39%)8259(Top 54%)8259(Top 367%)
30K18.64 mi3.11 mi10268-2698223-978223-9711685(Top 44%)8665(Top 57%)8665(Top 385%)
20M20.00 mi1.36 mi10748-4808427-2048427-20416266(Top 61%)10512(Top 69%)10512(Top 467%)
21M21.00 mi1.00 mi11541-7938771-3448771-34419828(Top 74%)11968(Top 79%)11968(Top 531%)
35K21.75 mi0.75 mi11675-1348821-508821-5014535(Top 55%)9653(Top 64%)9653(Top 429%)
23M23.00 mi1.25 mi12061-3868953-1328953-13217020(Top 64%)10694(Top 70%)10694(Top 475%)
24M24.00 mi1.00 mi12346-2859067-1149067-11417121(Top 64%)10667(Top 70%)10667(Top 474%)
40K24.85 mi0.85 mi12642-2969169-1029169-10218224(Top 68%)11135(Top 73%)11135(Top 494%)
25.2M25.20 mi0.35 mi12837-1959242-739242-7320571(Top 77%)12178(Top 80%)12178(Top 541%)
Finish26.22 mi1.02 mi13186-3499361-1199361-11920230(Top 76%)12065(Top 80%)12065(Top 536%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10350

Males

8334

M45-49

8334

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10121

Males

8237

M45-49

8237

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10350

Males

8334

M45-49

8334

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11141

Males

8648

M45-49

8648

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10804

Males

8530

M45-49

8530

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10496

Males

8259

M45-49

8259

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11685

Males

8665

M45-49

8665

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16266

Males

10512

M45-49

10512

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19828

Males

11968

M45-49

11968

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14535

Males

9653

M45-49

9653

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

17020

Males

10694

M45-49

10694

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

17121

Males

10667

M45-49

10667

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18224

Males

11135

M45-49

11135

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20571

Males

12178

M45-49

12178

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20230

Males

12065

M45-49

12065

Passing Analysis

Category:
Athletes Passed
278*
Passed By
4913
Net Change
-4635
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8215
5K → 10K45918-873#8215#9088
10K → 15K57412-355#9088#9443
15K → 20K55495-440#9443#9883
20K → Half1463-49#9883#9932
30K → 20M16*496-480#10268#10748
20M → 21M7800-793#10748#11541
21M → 35K20154-134#11541#11675
35K → 23M28414-386#11675#12061
23M → 24M14299-285#12061#12346
24M → 40K11307-296#12346#12642
40K → 25.2M3198-195#12642#12837
25.2M → Finish8357-349#12837#13186
TOTALS278*4913-4635

* 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