Boston Marathon logo
BOSTON MARATHON 2024

B.j. Sellers

Bib: 4525•M

FL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 11%
Gender (Male)
#0 / 14578
Top 18%
Masters (Masters Men)
#0 / 9729
Top 8%
Division (M45-49)
#0 / 2218
Top 10%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:19
Rank: #3560
Start → 5K
20:19 | 6:32/mi
10K· 6.21 mi
40:52
Rank: #3609 (-49)
5K → 10K
20:33 | 6:37/mi
15K· 9.32 mi
1:01:29
Rank: #3540 (+69)
10K → 15K
20:37 | 6:38/mi
20K· 12.43 mi
1:22:23
Rank: #3463 (+77)
15K → 20K
20:54 | 6:44/mi
Half· 13.11 mi
1:26:52
Rank: #3427 (+36)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:44:11
Rank: #3682 (-255)
Half → 25K
17:19 | 7:09/mi
30K· 18.64 mi
2:06:22
Rank: #3568 (+114)
25K → 30K
22:11 | 7:08/mi
20M
2:16:09
Rank: #3490 (+78)
30K → 20M
9:47 | 7:12/mi
21M
2:23:52
Rank: #3413 (+77)
20M → 21M
7:43 | 7:43/mi
35K· 21.75 mi
2:28:58
Rank: #3353 (+60)
21M → 35K
5:06 | 6:49/mi
23M
2:37:54
Rank: #3216 (+137)
35K → 23M
8:56 | 7:08/mi
24M
2:44:47
Rank: #3118 (+98)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
2:50:42
Rank: #3013 (+105)
24M → 40K
5:55 | 6:55/mi
25.2M
2:53:16
Rank: #2956 (+57)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:59:49
Rank: #2852 (+104)
25.2M → Finish
6:33 | 6:26/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
Time1:26:52
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:32:57
Pace7:05 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2920:196:3220:19
6:32
-
10K
6.21 mi10:44:0240:526:3520:33
6:37
+0:05
15K
9.32 mi11:04:391:01:296:3620:37
6:38
+0:01
20K
12.43 mi11:25:331:22:236:3820:54
6:44
+0:06
Half
13.11 mi11:30:021:26:526:384:29
6:34
-0:10
25K
15.53 mi11:47:211:44:116:4217:19
7:09
+0:35
30K
18.64 mi12:09:322:06:226:4722:11
7:08
-0:01
20M
20.00 mi12:19:192:16:096:489:47
7:12
+0:04
21M
21.00 mi12:27:022:23:526:517:43
7:43
+0:31
35K
21.75 mi12:32:082:28:586:515:06
6:49
-0:54
23M
23.00 mi12:41:042:37:546:528:56
7:08
+0:19
24M
24.00 mi12:47:572:44:476:526:53
6:53
-0:15
40K
24.85 mi12:53:522:50:426:525:55
6:55
+0:02
25.2M
25.20 mi12:56:262:53:166:532:34
7:27
+0:32
Finish
26.22 mi13:02:592:59:496:526:33
6:26
-1:01

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

6:26 /mi

Average Pace

6:52 /mi

Slowest Pace

7:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:19

62% of race

Time at Steady Pace

1:00:47

34% of race

Time at Slower Pace

7:43

4% of race

Average Pace: 6:51 /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 mi10:23:2920:196:3220:19
6:32
#3560
10K
6.21 mi10:44:0240:526:3520:33
6:37
#3609
15K
9.32 mi11:04:391:01:296:3620:37
6:38
#3540
20K
12.43 mi11:25:331:22:236:3820:54
6:44
#3463
Half
13.11 mi11:30:021:26:526:384:29
6:34
#3427
25K
15.53 mi11:47:211:44:116:4217:19
7:09
#3682
30K
18.64 mi12:09:322:06:226:4722:11
7:08
#3568
20M
20.00 mi12:19:192:16:096:489:47
7:12
#3490
21M
21.00 mi12:27:022:23:526:517:43
7:43
#3413
35K
21.75 mi12:32:082:28:586:515:06
6:49
#3353
23M
23.00 mi12:41:042:37:546:528:56
7:08
#3216
24M
24.00 mi12:47:572:44:476:526:53
6:53
#3118
40K
24.85 mi12:53:522:50:426:525:55
6:55
#3013
25.2M
25.20 mi12:56:262:53:166:532:34
7:27
#2956
Finish
26.22 mi13:02:592:59:496:526:33
6:26
#2852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3560338333833491(Top 14%)3310(Top 23%)3310(Top 149%)
10K6.21 mi3.10 mi3609-493424-413424-413694(Top 14%)3490(Top 24%)3490(Top 157%)
15K9.32 mi3.11 mi3540+693362+623362+623491(Top 14%)3310(Top 23%)3310(Top 149%)
20K12.43 mi3.11 mi3463+773291+713291+713371(Top 13%)3190(Top 22%)3190(Top 144%)
Half13.11 mi0.68 mi3427+363259+323259+322996(Top 12%)2852(Top 20%)2852(Top 129%)
25K15.53 mi2.42 mi3682-2553482-2233482-2235008(Top 20%)4483(Top 31%)4483(Top 202%)
30K18.64 mi3.11 mi3568+1143357+1253357+1253509(Top 14%)3205(Top 22%)3205(Top 144%)
20M20.00 mi1.36 mi3490+783275+823275+823123(Top 12%)2848(Top 20%)2848(Top 128%)
21M21.00 mi1.00 mi3413+773198+773198+773184(Top 12%)2847(Top 20%)2847(Top 128%)
35K21.75 mi0.75 mi3353+603137+613137+612363(Top 9%)2167(Top 15%)2167(Top 98%)
23M23.00 mi1.25 mi3216+1373008+1293008+1292364(Top 9%)2136(Top 15%)2136(Top 96%)
24M24.00 mi1.00 mi3118+982915+932915+931954(Top 8%)1771(Top 12%)1771(Top 80%)
40K24.85 mi0.85 mi3013+1052816+992816+991648(Top 6%)1504(Top 10%)1504(Top 68%)
25.2M25.20 mi0.35 mi2956+572760+562760+561321(Top 5%)1207(Top 8%)1207(Top 54%)
Finish26.22 mi1.02 mi2852+1042663+972663+971214(Top 5%)1111(Top 8%)1111(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3491

Males

3310

M45-49

3310

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3694

Males

3490

M45-49

3490

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3491

Males

3310

M45-49

3310

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3371

Males

3190

M45-49

3190

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

2996

Males

2852

M45-49

2852

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5008

Males

4483

M45-49

4483

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3509

Males

3205

M45-49

3205

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3123

Males

2848

M45-49

2848

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3184

Males

2847

M45-49

2847

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2363

Males

2167

M45-49

2167

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2364

Males

2136

M45-49

2136

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

1954

Males

1771

M45-49

1771

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1648

Males

1504

M45-49

1504

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1321

Males

1207

M45-49

1207

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1214

Males

1111

M45-49

1111

Passing Analysis

Category:
Athletes Passed
1620
Passed By
912
Net Change
+708
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3560
5K → 10K121170-49#3560#3609
10K → 15K14576+69#3609#3540
15K → 20K15578+77#3540#3463
20K → Half404+36#3463#3427
Half → 25K66321-255#3427#3682
25K → 30K241127+114#3682#3568
30K → 20M12446+78#3568#3490
20M → 21M11437+77#3490#3413
21M → 35K7212+60#3413#3353
35K → 23M15619+137#3353#3216
23M → 24M11012+98#3216#3118
24M → 40K1127+105#3118#3013
40K → 25.2M581+57#3013#2956
25.2M → Finish1062+104#2956#2852
TOTALS1620912+708
📊

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