Boston Marathon logo
BOSTON MARATHON 2023

Jim Sowders

Bib: 20816•M

IN

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:14
Rank: #17168
Start → 5K
26:14 | 8:27/mi
10K· 6.21 mi
52:27
Rank: #17476 (-308)
5K → 10K
26:13 | 8:26/mi
15K· 9.32 mi
1:18:51
Rank: #17586 (-110)
10K → 15K
26:24 | 8:30/mi
20K· 12.43 mi
1:45:50
Rank: #17663 (-77)
15K → 20K
26:59 | 8:41/mi
Half· 13.11 mi
1:51:45
Rank: #17704 (-41)
20K → Half
5:55 | 8:40/mi
25K· 15.53 mi
2:13:05
Rank: #17732 (-28)
Half → 25K
21:20 | 8:48/mi
30K· 18.64 mi
2:43:42
Rank: #18470 (-738)
25K → 30K
30:37 | 9:51/mi
20M
2:57:06
Rank: #18636 (-166)
30K → 20M
13:24 | 9:52/mi
21M
3:08:50
Rank: #19018 (-382)
20M → 21M
11:44 | 11:44/mi
35K· 21.75 mi
3:16:07
Rank: #19097 (-79)
21M → 35K
7:17 | 9:44/mi
23M
3:28:37
Rank: #19169 (-72)
35K → 23M
12:30 | 9:59/mi
24M
3:38:14
Rank: #19201 (-32)
23M → 24M
9:37 | 9:37/mi
40K· 24.85 mi
3:46:59
Rank: #19279 (-78)
24M → 40K
8:45 | 10:14/mi
25.2M
3:51:05
Rank: #19384 (-105)
40K → 25.2M
4:06 | 11:53/mi
Finish· 26.22 mi
4:01:04
Rank: #19483 (-99)
25.2M → Finish
9:59 | 9:48/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
Time1:51:45
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time2:09:19
Pace9:52 /mi
📊Positive Split: 15.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0726:148:2726:14
8:27
-
10K
6.21 mi11:45:2052:278:2626:13
8:26
-0:01
15K
9.32 mi12:11:441:18:518:2826:24
8:30
+0:04
20K
12.43 mi12:38:431:45:508:3126:59
8:41
+0:11
Half
13.11 mi12:44:381:51:458:315:55
8:40
-0:01
25K
15.53 mi13:05:582:13:058:3421:20
8:48
+0:08
30K
18.64 mi13:36:352:43:428:4730:37
9:51
+1:03
20M
20.00 mi13:49:592:57:068:5113:24
9:52
+0:01
21M
21.00 mi14:01:433:08:509:0011:44
11:44
+1:52
35K
21.75 mi14:09:003:16:079:017:17
9:44
-2:00
23M
23.00 mi14:21:303:28:379:0412:30
9:59
+0:15
24M
24.00 mi14:31:073:38:149:069:37
9:37
-0:22
40K
24.85 mi14:39:523:46:599:088:45
10:14
+0:37
25.2M
25.20 mi14:43:583:51:059:104:06
11:53
+1:39
Finish
26.22 mi14:53:574:01:049:129:59
9:48
-2:05

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

8:26 /mi

Average Pace

9:12 /mi

Slowest Pace

11:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:05

55% of race

Time at Steady Pace

1:32:09

38% of race

Time at Slower Pace

15:50

7% of race

Average Pace: 9:12 /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 mi11:19:0726:148:2726:14
8:27
#17168
10K
6.21 mi11:45:2052:278:2626:13
8:26
#17476
15K
9.32 mi12:11:441:18:518:2826:24
8:30
#17586
20K
12.43 mi12:38:431:45:508:3126:59
8:41
#17663
Half
13.11 mi12:44:381:51:458:315:55
8:40
#17704
25K
15.53 mi13:05:582:13:058:3421:20
8:48
#17732
30K
18.64 mi13:36:352:43:428:4730:37
9:51
#18470
20M
20.00 mi13:49:592:57:068:5113:24
9:52
#18636
21M
21.00 mi14:01:433:08:509:0011:44
11:44
#19018
35K
21.75 mi14:09:003:16:079:017:17
9:44
#19097
23M
23.00 mi14:21:303:28:379:0412:30
9:59
#19169
24M
24.00 mi14:31:073:38:149:069:37
9:37
#19201
40K
24.85 mi14:39:523:46:599:088:45
10:14
#19279
25.2M
25.20 mi14:43:583:51:059:104:06
11:53
#19384
Finish
26.22 mi14:53:574:01:049:129:59
9:48
#19483
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17168111101111017792(Top 67%)11389(Top 75%)11389(Top 1026%)
10K6.21 mi3.10 mi17476-30811245-13511245-13517844(Top 67%)11428(Top 75%)11428(Top 1030%)
15K9.32 mi3.11 mi17586-11011300-5511300-5517792(Top 67%)11389(Top 75%)11389(Top 1026%)
20K12.43 mi3.11 mi17663-7711324-2411324-2418021(Top 68%)11481(Top 76%)11481(Top 1034%)
Half13.11 mi0.68 mi17704-4111337-1311337-1318755(Top 70%)11810(Top 78%)11810(Top 1064%)
25K15.53 mi2.42 mi17732-2811339-211339-217940(Top 67%)11396(Top 75%)11396(Top 1027%)
30K18.64 mi3.11 mi18470-73811601-26211601-26220610(Top 77%)12473(Top 82%)12473(Top 1124%)
20M20.00 mi1.36 mi18636-16611663-6211663-6220042(Top 75%)12140(Top 80%)12140(Top 1094%)
21M21.00 mi1.00 mi19018-38211820-15711820-15722278(Top 84%)13101(Top 86%)13101(Top 1180%)
35K21.75 mi0.75 mi19097-7911849-2911849-2920553(Top 77%)12282(Top 81%)12282(Top 1106%)
23M23.00 mi1.25 mi19169-7211871-2211871-2219933(Top 75%)11993(Top 79%)11993(Top 1080%)
24M24.00 mi1.00 mi19201-3211876-511876-519618(Top 74%)11827(Top 78%)11827(Top 1065%)
40K24.85 mi0.85 mi19279-7811902-2611902-2620559(Top 77%)12176(Top 80%)12176(Top 1097%)
25.2M25.20 mi0.35 mi19384-10511945-4311945-4322268(Top 84%)12968(Top 85%)12968(Top 1168%)
Finish26.22 mi1.02 mi19483-9911972-2711972-2721129(Top 79%)12483(Top 82%)12483(Top 1125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

17792

Males

11389

M60-64

11389

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

17844

Males

11428

M60-64

11428

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

17792

Males

11389

M60-64

11389

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18021

Males

11481

M60-64

11481

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

18755

Males

11810

M60-64

11810

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17940

Males

11396

M60-64

11396

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20610

Males

12473

M60-64

12473

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

20042

Males

12140

M60-64

12140

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

22278

Males

13101

M60-64

13101

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20553

Males

12282

M60-64

12282

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

19933

Males

11993

M60-64

11993

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19618

Males

11827

M60-64

11827

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20559

Males

12176

M60-64

12176

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22268

Males

12968

M60-64

12968

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

21129

Males

12483

M60-64

12483

Passing Analysis

Category:
Athletes Passed
880
Passed By
3195
Net Change
-2315
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17168
5K → 10K190498-308#17168#17476
10K → 15K142252-110#17476#17586
15K → 20K148225-77#17586#17663
20K → Half1758-41#17663#17704
Half → 25K108136-28#17704#17732
25K → 30K41779-738#17732#18470
30K → 20M45211-166#18470#18636
20M → 21M11393-382#18636#19018
21M → 35K22101-79#19018#19097
35K → 23M56128-72#19097#19169
23M → 24M4375-32#19169#19201
24M → 40K33111-78#19201#19279
40K → 25.2M3108-105#19279#19384
25.2M → Finish21120-99#19384#19483
TOTALS8803195-2315
📊

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