Boston Marathon logo
BOSTON MARATHON 2023

Harry Duvall

Bib: 19557•M

MA

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 (M55-59)
#0 / 1422
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:15
Rank: #14901
Start → 5K
25:15 | 8:08/mi
10K· 6.21 mi
50:10
Rank: #14915 (-14)
5K → 10K
24:55 | 8:01/mi
15K· 9.32 mi
1:15:05
Rank: #14783 (+132)
10K → 15K
24:55 | 8:01/mi
20K· 12.43 mi
1:40:05
Rank: #14512 (+271)
15K → 20K
25:00 | 8:03/mi
Half· 13.11 mi
1:45:30
Rank: #14482 (+30)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:05:12
Rank: #14333 (+149)
Half → 25K
19:42 | 8:08/mi
30K· 18.64 mi
2:30:53
Rank: #14061 (+272)
25K → 30K
25:41 | 8:16/mi
20M
2:42:15
Rank: #13926 (+135)
30K → 20M
11:22 | 8:22/mi
21M
2:51:07
Rank: #13825 (+101)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:57:21
Rank: #13840 (-15)
21M → 35K
6:14 | 8:20/mi
23M
3:07:44
Rank: #13686 (+154)
35K → 23M
10:23 | 8:18/mi
24M
3:15:50
Rank: #13573 (+113)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:22:44
Rank: #13423 (+150)
24M → 40K
6:54 | 8:04/mi
25.2M
3:25:52
Rank: #13401 (+22)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:33:50
Rank: #13288 (+113)
25.2M → Finish
7:58 | 7:49/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
Time1:45:30
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:48:20
Pace8:16 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2525:158:0825:15
8:08
-
10K
6.21 mi11:41:2050:108:0424:55
8:01
-0:07
15K
9.32 mi12:06:151:15:058:0324:55
8:01
0:00
20K
12.43 mi12:31:151:40:058:0325:00
8:03
+0:02
Half
13.11 mi12:36:401:45:308:035:25
7:56
-0:07
25K
15.53 mi12:56:222:05:128:0419:42
8:08
+0:12
30K
18.64 mi13:22:032:30:538:0625:41
8:16
+0:08
20M
20.00 mi13:33:252:42:158:0711:22
8:22
+0:06
21M
21.00 mi13:42:172:51:078:098:52
8:52
+0:30
35K
21.75 mi13:48:312:57:218:096:14
8:20
-0:32
23M
23.00 mi13:58:543:07:448:1010:23
8:18
-0:02
24M
24.00 mi14:07:003:15:508:108:06
8:06
-0:12
40K
24.85 mi14:13:543:22:448:096:54
8:04
-0:02
25.2M
25.20 mi14:17:023:25:528:103:08
9:05
+1:01
Finish
26.22 mi14:25:003:33:508:107:58
7:49
-1:16

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

7:49 /mi

Average Pace

8:10 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:50

94% of race

Time at Steady Pace

12:00

6% of race

Time at Slower Pace

0:00

0% 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 mi11:16:2525:158:0825:15
8:08
#14901
10K
6.21 mi11:41:2050:108:0424:55
8:01
#14915
15K
9.32 mi12:06:151:15:058:0324:55
8:01
#14783
20K
12.43 mi12:31:151:40:058:0325:00
8:03
#14512
Half
13.11 mi12:36:401:45:308:035:25
7:56
#14482
25K
15.53 mi12:56:222:05:128:0419:42
8:08
#14333
30K
18.64 mi13:22:032:30:538:0625:41
8:16
#14061
20M
20.00 mi13:33:252:42:158:0711:22
8:22
#13926
21M
21.00 mi13:42:172:51:078:098:52
8:52
#13825
35K
21.75 mi13:48:312:57:218:096:14
8:20
#13840
23M
23.00 mi13:58:543:07:448:1010:23
8:18
#13686
24M
24.00 mi14:07:003:15:508:108:06
8:06
#13573
40K
24.85 mi14:13:543:22:448:096:54
8:04
#13423
25.2M
25.20 mi14:17:023:25:528:103:08
9:05
#13401
Finish
26.22 mi14:25:003:33:508:107:58
7:49
#13288
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi14901102981029814527(Top 55%)10108(Top 67%)10108(Top 711%)
10K6.21 mi3.10 mi14915-1410293+510293+514938(Top 56%)10283(Top 68%)10283(Top 723%)
15K9.32 mi3.11 mi14783+13210232+6110232+6114527(Top 55%)10108(Top 67%)10108(Top 711%)
20K12.43 mi3.11 mi14512+27110118+11410118+11413793(Top 52%)9787(Top 64%)9787(Top 688%)
Half13.11 mi0.68 mi14482+3010102+1610102+1613836(Top 52%)9830(Top 65%)9830(Top 691%)
25K15.53 mi2.42 mi14333+14910011+9110011+9113655(Top 51%)9624(Top 63%)9624(Top 677%)
30K18.64 mi3.11 mi14061+2729860+1519860+15112792(Top 48%)9146(Top 60%)9146(Top 643%)
20M20.00 mi1.36 mi13926+1359795+659795+6512774(Top 48%)9031(Top 60%)9031(Top 635%)
21M21.00 mi1.00 mi13825+1019738+579738+5712631(Top 47%)8869(Top 58%)8869(Top 624%)
35K21.75 mi0.75 mi13840-159727+119727+1114249(Top 54%)9527(Top 63%)9527(Top 670%)
23M23.00 mi1.25 mi13686+1549636+919636+9111831(Top 44%)8396(Top 55%)8396(Top 590%)
24M24.00 mi1.00 mi13573+1139571+659571+6511929(Top 45%)8370(Top 55%)8370(Top 589%)
40K24.85 mi0.85 mi13423+1509493+789493+7810502(Top 39%)7614(Top 50%)7614(Top 535%)
25.2M25.20 mi0.35 mi13401+229470+239470+2312963(Top 49%)8743(Top 58%)8743(Top 615%)
Finish26.22 mi1.02 mi13288+1139399+719399+7110790(Top 41%)7701(Top 51%)7701(Top 542%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14527

Males

10108

M55-59

10108

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14938

Males

10283

M55-59

10283

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14527

Males

10108

M55-59

10108

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

13793

Males

9787

M55-59

9787

20K→Half

12.4 - 13.1 mi

Top 52%
×2stories
+19ft-37ft

Overall

13836

Males

9830

M55-59

9830

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13655

Males

9624

M55-59

9624

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

12792

Males

9146

M55-59

9146

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

12774

Males

9031

M55-59

9031

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12631

Males

8869

M55-59

8869

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

14249

Males

9527

M55-59

9527

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11831

Males

8396

M55-59

8396

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

11929

Males

8370

M55-59

8370

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10502

Males

7614

M55-59

7614

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

12963

Males

8743

M55-59

8743

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10790

Males

7701

M55-59

7701

Passing Analysis

Category:
Athletes Passed
2471
Passed By
858
Net Change
+1613
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14901
5K → 10K280294-14#14901#14915
10K → 15K263131+132#14915#14783
15K → 20K34473+271#14783#14512
20K → Half4616+30#14512#14482
Half → 25K21566+149#14482#14333
25K → 30K32755+272#14333#14061
30K → 20M17338+135#14061#13926
20M → 21M13736+101#13926#13825
21M → 35K4560-15#13825#13840
35K → 23M17218+154#13840#13686
23M → 24M13320+113#13686#13573
24M → 40K1577+150#13573#13423
40K → 25.2M4422+22#13423#13401
25.2M → Finish13522+113#13401#13288
TOTALS2471858+1613
📊

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