Boston Marathon logo
BOSTON MARATHON 2024

Naser Jafari

Bib: 8656•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 21%
Gender (Male)
#0 / 14578
Top 31%
Masters (Masters Men)
#0 / 9729
Top 20%
Division (M40-44)
#0 / 2009
Top 45%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:05
Rank: #5526
Start → 5K
21:05 | 6:47/mi
10K· 6.21 mi
42:07
Rank: #5243 (+283)
5K → 10K
21:02 | 6:46/mi
15K· 9.32 mi
1:03:41
Rank: #5433 (-190)
10K → 15K
21:34 | 6:56/mi
20K· 12.43 mi
1:25:20
Rank: #5311 (+122)
15K → 20K
21:39 | 6:58/mi
Half· 13.11 mi
1:30:02
Rank: #5306 (+5)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:47:17
Rank: #5146 (+160)
Half → 25K
17:15 | 7:07/mi
30K· 18.64 mi
2:10:27
Rank: #4979 (+167)
25K → 30K
23:10 | 7:27/mi
20M
2:21:13
Rank: #5019 (-40)
30K → 20M
10:46 | 7:55/mi
21M
2:29:27
Rank: #4936 (+83)
20M → 21M
8:14 | 8:14/mi
35K· 21.75 mi
2:35:50
Rank: #5080 (-144)
21M → 35K
6:23 | 8:32/mi
23M
2:46:08
Rank: #5085 (-5)
35K → 23M
10:18 | 8:14/mi
24M
2:54:45
Rank: #5219 (-134)
23M → 24M
8:37 | 8:37/mi
40K· 24.85 mi
3:02:02
Rank: #5261 (-42)
24M → 40K
7:17 | 8:31/mi
25.2M
3:05:20
Rank: #5285 (-24)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:13:18
Rank: #5297 (-12)
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
Time1:30:02
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:43:16
Pace7:53 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5721:056:4721:05
6:47
-
10K
6.21 mi11:09:5942:076:4721:02
6:46
-0:01
15K
9.32 mi11:31:331:03:416:5021:34
6:56
+0:10
20K
12.43 mi11:53:121:25:206:5221:39
6:58
+0:02
Half
13.11 mi11:57:541:30:026:524:42
6:53
-0:05
25K
15.53 mi12:15:091:47:176:5417:15
7:07
+0:14
30K
18.64 mi12:38:192:10:277:0023:10
7:27
+0:20
20M
20.00 mi12:49:052:21:137:0410:46
7:55
+0:28
21M
21.00 mi12:57:192:29:277:078:14
8:14
+0:19
35K
21.75 mi13:03:422:35:507:106:23
8:32
+0:18
23M
23.00 mi13:14:002:46:087:1310:18
8:14
-0:18
24M
24.00 mi13:22:372:54:457:178:37
8:37
+0:23
40K
24.85 mi13:29:543:02:027:197:17
8:31
-0:06
25.2M
25.20 mi13:33:123:05:207:213:18
9:34
+1:03
Finish
26.22 mi13:41:103:13:187:237:58
7:49
-1:45

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

6:46 /mi

Average Pace

7:23 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:17

56% of race

Time at Steady Pace

41:54

22% of race

Time at Slower Pace

44:07

23% of race

Average Pace: 7:22 /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 mi10:48:5721:056:4721:05
6:47
#5526
10K
6.21 mi11:09:5942:076:4721:02
6:46
#5243
15K
9.32 mi11:31:331:03:416:5021:34
6:56
#5433
20K
12.43 mi11:53:121:25:206:5221:39
6:58
#5311
Half
13.11 mi11:57:541:30:026:524:42
6:53
#5306
25K
15.53 mi12:15:091:47:176:5417:15
7:07
#5146
30K
18.64 mi12:38:192:10:277:0023:10
7:27
#4979
20M
20.00 mi12:49:052:21:137:0410:46
7:55
#5019
21M
21.00 mi12:57:192:29:277:078:14
8:14
#4936
35K
21.75 mi13:03:422:35:507:106:23
8:32
#5080
23M
23.00 mi13:14:002:46:087:1310:18
8:14
#5085
24M
24.00 mi13:22:372:54:457:178:37
8:37
#5219
40K
24.85 mi13:29:543:02:027:197:17
8:31
#5261
25.2M
25.20 mi13:33:123:05:207:213:18
9:34
#5285
Finish
26.22 mi13:41:103:13:187:237:58
7:49
#5297
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5526506950695856(Top 23%)5279(Top 36%)5279(Top 263%)
10K6.21 mi3.10 mi5243+2834840+2294840+2294913(Top 19%)4556(Top 31%)4556(Top 227%)
15K9.32 mi3.11 mi5433-1904988-1484988-1485856(Top 23%)5279(Top 36%)5279(Top 263%)
20K12.43 mi3.11 mi5311+1224876+1124876+1125052(Top 20%)4614(Top 32%)4614(Top 230%)
Half13.11 mi0.68 mi5306+54865+114865+115114(Top 20%)4657(Top 32%)4657(Top 232%)
25K15.53 mi2.42 mi5146+1604709+1564709+1564892(Top 19%)4400(Top 30%)4400(Top 219%)
30K18.64 mi3.11 mi4979+1674552+1574552+1574884(Top 19%)4266(Top 29%)4266(Top 212%)
20M20.00 mi1.36 mi5019-404563-114563-116328(Top 25%)5044(Top 35%)5044(Top 251%)
21M21.00 mi1.00 mi4936+834469+944469+945047(Top 20%)4129(Top 28%)4129(Top 206%)
35K21.75 mi0.75 mi5080-1444544-754544-7510876(Top 43%)7152(Top 49%)7152(Top 356%)
23M23.00 mi1.25 mi5085-54524+204524+206921(Top 27%)5033(Top 35%)5033(Top 251%)
24M24.00 mi1.00 mi5219-1344596-724596-7210098(Top 40%)6569(Top 45%)6569(Top 327%)
40K24.85 mi0.85 mi5261-42459645968406(Top 33%)5607(Top 38%)5607(Top 279%)
25.2M25.20 mi0.35 mi5285-244597-14597-18947(Top 35%)5783(Top 40%)5783(Top 288%)
Finish26.22 mi1.02 mi5297-124576+214576+217419(Top 29%)5094(Top 35%)5094(Top 254%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

5856

Males

5279

M40-44

5279

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4913

Males

4556

M40-44

4556

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

5856

Males

5279

M40-44

5279

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5052

Males

4614

M40-44

4614

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5114

Males

4657

M40-44

4657

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

4892

Males

4400

M40-44

4400

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

4884

Males

4266

M40-44

4266

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6328

Males

5044

M40-44

5044

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5047

Males

4129

M40-44

4129

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

10876

Males

7152

M40-44

7152

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

6921

Males

5033

M40-44

5033

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10098

Males

6569

M40-44

6569

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8406

Males

5607

M40-44

5607

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

8947

Males

5783

M40-44

5783

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

7419

Males

5094

M40-44

5094

Passing Analysis

Category:
Athletes Passed
1741
Passed By
1512
Net Change
+229
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5526
5K → 10K36077+283#5526#5243
10K → 15K89279-190#5243#5433
15K → 20K21492+122#5433#5311
20K → Half3429+5#5311#5306
Half → 25K24484+160#5306#5146
25K → 30K25083+167#5146#4979
30K → 20M88128-40#4979#5019
20M → 21M13552+83#5019#4936
21M → 35K26170-144#4936#5080
35K → 23M9398-5#5080#5085
23M → 24M39173-134#5085#5219
24M → 40K67109-42#5219#5261
40K → 25.2M3155-24#5261#5285
25.2M → Finish7183-12#5285#5297
TOTALS17411512+229
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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