Boston Marathon logo
BOSTON MARATHON 2023

Jules Masalunga

Bib: 7132•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 24%
Masters (Masters Men)
#0 / 9891
Top 11%
Division (M40-44)
#0 / 2241
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:11
Rank: #4836
Start → 5K
21:11 | 6:49/mi
10K· 6.21 mi
42:15
Rank: #4947 (-111)
5K → 10K
21:04 | 6:47/mi
15K· 9.32 mi
1:03:04
Rank: #4657 (+290)
10K → 15K
20:49 | 6:42/mi
20K· 12.43 mi
1:24:09
Rank: #4563 (+94)
15K → 20K
21:05 | 6:47/mi
Half· 13.11 mi
1:28:46
Rank: #4566 (-3)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:45:23
Rank: #4536 (+30)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:07:28
Rank: #4648 (-112)
25K → 30K
22:05 | 7:06/mi
20M
2:16:57
Rank: #4563 (+85)
30K → 20M
9:29 | 6:59/mi
21M
2:24:12
Rank: #4460 (+103)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:29:12
Rank: #4400 (+60)
21M → 35K
5:00 | 6:41/mi
23M
2:37:48
Rank: #4271 (+129)
35K → 23M
8:36 | 6:52/mi
24M
2:44:21
Rank: #4158 (+113)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:50:01
Rank: #4027 (+131)
24M → 40K
5:40 | 6:38/mi
25.2M
2:52:27
Rank: #3975 (+52)
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
2:58:59
Rank: #3858 (+117)
25.2M → Finish
6:32 | 6:25/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
Time1:28:46
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:30:13
Pace6:53 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:2821:116:4921:11
6:49
-
10K
6.21 mi10:47:3242:156:4821:04
6:47
-0:02
15K
9.32 mi11:08:211:03:046:4620:49
6:42
-0:05
20K
12.43 mi11:29:261:24:096:4621:05
6:47
+0:05
Half
13.11 mi11:34:031:28:466:464:37
6:46
-0:01
25K
15.53 mi11:50:401:45:236:4716:37
6:51
+0:05
30K
18.64 mi12:12:452:07:286:5022:05
7:06
+0:15
20M
20.00 mi12:22:142:16:576:519:29
6:59
-0:07
21M
21.00 mi12:29:292:24:126:527:15
7:15
+0:16
35K
21.75 mi12:34:292:29:126:525:00
6:41
-0:34
23M
23.00 mi12:43:052:37:486:528:36
6:52
+0:11
24M
24.00 mi12:49:382:44:216:516:33
6:33
-0:19
40K
24.85 mi12:55:182:50:016:505:40
6:38
+0:05
25.2M
25.20 mi12:57:442:52:276:512:26
7:03
+0:25
Finish
26.22 mi13:04:162:58:596:506:32
6:25
-0:38

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

6:25 /mi

Average Pace

6:50 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:39

84% of race

Time at Steady Pace

29:20

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:26:2821:116:4921:11
6:49
#4836
10K
6.21 mi10:47:3242:156:4821:04
6:47
#4947
15K
9.32 mi11:08:211:03:046:4620:49
6:42
#4657
20K
12.43 mi11:29:261:24:096:4621:05
6:47
#4563
Half
13.11 mi11:34:031:28:466:464:37
6:46
#4566
25K
15.53 mi11:50:401:45:236:4716:37
6:51
#4536
30K
18.64 mi12:12:452:07:286:5022:05
7:06
#4648
20M
20.00 mi12:22:142:16:576:519:29
6:59
#4563
21M
21.00 mi12:29:292:24:126:527:15
7:15
#4460
35K
21.75 mi12:34:292:29:126:525:00
6:41
#4400
23M
23.00 mi12:43:052:37:486:528:36
6:52
#4271
24M
24.00 mi12:49:382:44:216:516:33
6:33
#4158
40K
24.85 mi12:55:182:50:016:505:40
6:38
#4027
25.2M
25.20 mi12:57:442:52:276:512:26
7:03
#3975
Finish
26.22 mi13:04:162:58:596:506:32
6:25
#3858
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4836449544954128(Top 16%)3874(Top 26%)3874(Top 173%)
10K6.21 mi3.10 mi4947-1114589-944589-945087(Top 19%)4705(Top 31%)4705(Top 210%)
15K9.32 mi3.11 mi4657+2904342+2474342+2474128(Top 16%)3874(Top 26%)3874(Top 173%)
20K12.43 mi3.11 mi4563+944261+814261+814301(Top 16%)4018(Top 26%)4018(Top 179%)
Half13.11 mi0.68 mi4566-3426142614909(Top 18%)4541(Top 30%)4541(Top 203%)
25K15.53 mi2.42 mi4536+304236+254236+254597(Top 17%)4276(Top 28%)4276(Top 191%)
30K18.64 mi3.11 mi4648-1124334-984334-984962(Top 19%)4561(Top 30%)4561(Top 204%)
20M20.00 mi1.36 mi4563+854255+794255+793897(Top 15%)3625(Top 24%)3625(Top 162%)
21M21.00 mi1.00 mi4460+1034162+934162+933365(Top 13%)3135(Top 21%)3135(Top 140%)
35K21.75 mi0.75 mi4400+604105+574105+573473(Top 13%)3225(Top 21%)3225(Top 144%)
23M23.00 mi1.25 mi4271+1293997+1083997+1083054(Top 11%)2849(Top 19%)2849(Top 127%)
24M24.00 mi1.00 mi4158+1133894+1033894+1032338(Top 9%)2189(Top 14%)2189(Top 98%)
40K24.85 mi0.85 mi4027+1313770+1243770+1242053(Top 8%)1923(Top 13%)1923(Top 86%)
25.2M25.20 mi0.35 mi3975+523721+493721+491974(Top 7%)1857(Top 12%)1857(Top 83%)
Finish26.22 mi1.02 mi3858+1173622+993622+992075(Top 8%)1930(Top 13%)1930(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4128

Males

3874

M40-44

3874

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5087

Males

4705

M40-44

4705

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4128

Males

3874

M40-44

3874

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4301

Males

4018

M40-44

4018

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4909

Males

4541

M40-44

4541

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4597

Males

4276

M40-44

4276

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

4962

Males

4561

M40-44

4561

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

3897

Males

3625

M40-44

3625

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3365

Males

3135

M40-44

3135

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3473

Males

3225

M40-44

3225

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3054

Males

2849

M40-44

2849

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2338

Males

2189

M40-44

2189

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2053

Males

1923

M40-44

1923

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1974

Males

1857

M40-44

1857

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2075

Males

1930

M40-44

1930

Passing Analysis

Category:
Athletes Passed
1707
Passed By
729
Net Change
+978
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4836
5K → 10K146257-111#4836#4947
10K → 15K31121+290#4947#4657
15K → 20K14753+94#4657#4563
20K → Half2326-3#4563#4566
Half → 25K9969+30#4566#4536
25K → 30K98210-112#4536#4648
30K → 20M10621+85#4648#4563
20M → 21M11613+103#4563#4460
21M → 35K7313+60#4460#4400
35K → 23M14718+129#4400#4271
23M → 24M12613+113#4271#4158
24M → 40K1343+131#4158#4027
40K → 25.2M542+52#4027#3975
25.2M → Finish12710+117#3975#3858
TOTALS1707729+978
📊

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