Boston Marathon logo
BOSTON MARATHON 2023

Harold Parks

Bib: 11404•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 33%
Division (M50-54)
#0 / 2052
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:23
Rank: #7524
Start → 5K
22:23 | 7:12/mi
10K· 6.21 mi
44:31
Rank: #7523 (+1)
5K → 10K
22:08 | 7:07/mi
15K· 9.32 mi
1:06:54
Rank: #7593 (-70)
10K → 15K
22:23 | 7:12/mi
20K· 12.43 mi
1:29:28
Rank: #7535 (+58)
15K → 20K
22:34 | 7:16/mi
Half· 13.11 mi
1:34:25
Rank: #7555 (-20)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:52:16
Rank: #7553 (+2)
Half → 25K
17:51 | 7:22/mi
30K· 18.64 mi
2:16:10
Rank: #7669 (-116)
25K → 30K
23:54 | 7:42/mi
20M
2:26:56
Rank: #7778 (-109)
30K → 20M
10:46 | 7:55/mi
21M
2:35:35
Rank: #7937 (-159)
20M → 21M
8:39 | 8:39/mi
35K· 21.75 mi
2:41:15
Rank: #7970 (-33)
21M → 35K
5:40 | 7:34/mi
23M
2:51:10
Rank: #8017 (-47)
35K → 23M
9:55 | 7:55/mi
24M
2:58:58
Rank: #8055 (-38)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
3:05:50
Rank: #8139 (-84)
24M → 40K
6:52 | 8:02/mi
25.2M
3:08:50
Rank: #8171 (-32)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:17:01
Rank: #8301 (-130)
25.2M → Finish
8:11 | 8:02/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
Time1:34:25
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:42:36
Pace7:50 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2122:237:1222:23
7:12
-
10K
6.21 mi11:11:2944:317:1022:08
7:07
-0:05
15K
9.32 mi11:33:521:06:547:1122:23
7:12
+0:05
20K
12.43 mi11:56:261:29:287:1222:34
7:16
+0:04
Half
13.11 mi12:01:231:34:257:124:57
7:15
-0:01
25K
15.53 mi12:19:141:52:167:1417:51
7:22
+0:07
30K
18.64 mi12:43:082:16:107:1823:54
7:42
+0:20
20M
20.00 mi12:53:542:26:567:2110:46
7:55
+0:13
21M
21.00 mi13:02:332:35:357:258:39
8:39
+0:44
35K
21.75 mi13:08:132:41:157:255:40
7:34
-1:05
23M
23.00 mi13:18:082:51:107:279:55
7:55
+0:21
24M
24.00 mi13:25:562:58:587:277:48
7:48
-0:07
40K
24.85 mi13:32:483:05:507:296:52
8:02
+0:14
25.2M
25.20 mi13:35:483:08:507:303:00
8:42
+0:40
Finish
26.22 mi13:43:593:17:017:318:11
8:02
-0:40

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

7:07 /mi

Average Pace

7:31 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:16

57% of race

Time at Steady Pace

58:03

29% of race

Time at Slower Pace

26:42

14% of race

Average Pace: 7:31 /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 mi10:49:2122:237:1222:23
7:12
#7524
10K
6.21 mi11:11:2944:317:1022:08
7:07
#7523
15K
9.32 mi11:33:521:06:547:1122:23
7:12
#7593
20K
12.43 mi11:56:261:29:287:1222:34
7:16
#7535
Half
13.11 mi12:01:231:34:257:124:57
7:15
#7555
25K
15.53 mi12:19:141:52:167:1417:51
7:22
#7553
30K
18.64 mi12:43:082:16:107:1823:54
7:42
#7669
20M
20.00 mi12:53:542:26:567:2110:46
7:55
#7778
21M
21.00 mi13:02:332:35:357:258:39
8:39
#7937
35K
21.75 mi13:08:132:41:157:255:40
7:34
#7970
23M
23.00 mi13:18:082:51:107:279:55
7:55
#8017
24M
24.00 mi13:25:562:58:587:277:48
7:48
#8055
40K
24.85 mi13:32:483:05:507:296:52
8:02
#8139
25.2M
25.20 mi13:35:483:08:507:303:00
8:42
#8171
Finish
26.22 mi13:43:593:17:017:318:11
8:02
#8301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi7524666866687825(Top 29%)6802(Top 45%)6802(Top 331%)
10K6.21 mi3.10 mi7523+16652+166652+167584(Top 28%)6664(Top 44%)6664(Top 325%)
15K9.32 mi3.11 mi7593-706684-326684-327825(Top 29%)6802(Top 45%)6802(Top 331%)
20K12.43 mi3.11 mi7535+586632+526632+527529(Top 28%)6581(Top 43%)6581(Top 321%)
Half13.11 mi0.68 mi7555-206641-96641-98223(Top 31%)7037(Top 46%)7037(Top 343%)
25K15.53 mi2.42 mi7553+26631+106631+107701(Top 29%)6612(Top 44%)6612(Top 322%)
30K18.64 mi3.11 mi7669-1166672-416672-418581(Top 32%)7023(Top 46%)7023(Top 342%)
20M20.00 mi1.36 mi7778-1096719-476719-479697(Top 36%)7572(Top 50%)7572(Top 369%)
21M21.00 mi1.00 mi7937-1596806-876806-8711322(Top 43%)8255(Top 54%)8255(Top 402%)
35K21.75 mi0.75 mi7970-336804+26804+29046(Top 34%)7089(Top 47%)7089(Top 345%)
23M23.00 mi1.25 mi8017-476814-106814-109182(Top 34%)7050(Top 46%)7050(Top 344%)
24M24.00 mi1.00 mi8055-386822-86822-89759(Top 37%)7265(Top 48%)7265(Top 354%)
40K24.85 mi0.85 mi8139-846853-316853-3110217(Top 38%)7438(Top 49%)7438(Top 362%)
25.2M25.20 mi0.35 mi8171-326864-116864-1110666(Top 40%)7623(Top 50%)7623(Top 371%)
Finish26.22 mi1.02 mi8301-1306921-576921-5712303(Top 46%)8417(Top 55%)8417(Top 410%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

7825

Males

6802

M50-54

6802

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7584

Males

6664

M50-54

6664

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

7825

Males

6802

M50-54

6802

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

7529

Males

6581

M50-54

6581

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8223

Males

7037

M50-54

7037

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

7701

Males

6612

M50-54

6612

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8581

Males

7023

M50-54

7023

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

9697

Males

7572

M50-54

7572

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11322

Males

8255

M50-54

8255

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9046

Males

7089

M50-54

7089

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9182

Males

7050

M50-54

7050

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9759

Males

7265

M50-54

7265

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10217

Males

7438

M50-54

7438

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10666

Males

7623

M50-54

7623

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12303

Males

8417

M50-54

8417

Passing Analysis

Category:
Athletes Passed
968
Passed By
1745
Net Change
-777
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7524
5K → 10K222221+1#7524#7523
10K → 15K102172-70#7523#7593
15K → 20K14082+58#7593#7535
20K → Half1636-20#7535#7555
Half → 25K8583+2#7555#7553
25K → 30K100216-116#7553#7669
30K → 20M35144-109#7669#7778
20M → 21M27186-159#7778#7937
21M → 35K3366-33#7937#7970
35K → 23M72119-47#7970#8017
23M → 24M5088-38#8017#8055
24M → 40K36120-84#8055#8139
40K → 25.2M2052-32#8139#8171
25.2M → Finish30160-130#8171#8301
TOTALS9681745-777
📊

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