Boston Marathon logo
BOSTON MARATHON 2024

Julio Costa

Bib: 9638•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 24%
Gender (Male)
#0 / 14578
Top 35%
Masters (Masters Men)
#0 / 9729
Top 23%
Division (M45-49)
#0 / 2218
Top 33%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:49
Rank: #2563
Start → 5K
19:49 | 6:23/mi
10K· 6.21 mi
39:53
Rank: #2630 (-67)
5K → 10K
20:04 | 6:28/mi
15K· 9.32 mi
1:00:34
Rank: #2953 (-323)
10K → 15K
20:41 | 6:39/mi
20K· 12.43 mi
1:21:57
Rank: #3239 (-286)
15K → 20K
21:23 | 6:53/mi
Half· 13.11 mi
1:26:35
Rank: #3284 (-45)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:44:16
Rank: #3744 (-460)
Half → 25K
17:41 | 7:18/mi
30K· 18.64 mi
2:08:46
Rank: #4477 (-733)
25K → 30K
24:30 | 7:53/mi
20M
2:22:16
Rank: #5322 (-845)
30K → 20M
13:30 | 9:56/mi
21M
2:32:09
Rank: #5646 (-324)
20M → 21M
9:53 | 9:53/mi
35K· 21.75 mi
2:38:10
Rank: #5673 (-27)
21M → 35K
6:01 | 8:03/mi
23M
2:50:08
Rank: #6076 (-403)
35K → 23M
11:58 | 9:33/mi
24M
2:57:59
Rank: #5984 (+92)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:06:11
Rank: #6234 (-250)
24M → 40K
8:12 | 9:35/mi
25.2M
3:09:13
Rank: #6193 (+41)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:16:36
Rank: #6052 (+141)
25.2M → Finish
7:23 | 7:15/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
Time1:26:35
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:50:01
Pace8:24 /mi
📊Positive Split: 27.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:1519:496:2319:49
6:23
-
10K
6.21 mi11:05:1939:536:2520:04
6:28
+0:05
15K
9.32 mi11:26:001:00:346:3020:41
6:39
+0:11
20K
12.43 mi11:47:231:21:576:3621:23
6:53
+0:14
Half
13.11 mi11:52:011:26:356:364:38
6:47
-0:06
25K
15.53 mi12:09:421:44:166:4317:41
7:18
+0:31
30K
18.64 mi12:34:122:08:466:5424:30
7:53
+0:35
20M
20.00 mi12:47:422:22:167:0713:30
9:56
+2:03
21M
21.00 mi12:57:352:32:097:159:53
9:53
-0:03
35K
21.75 mi13:03:362:38:107:166:01
8:03
-1:50
23M
23.00 mi13:15:342:50:087:2411:58
9:33
+1:30
24M
24.00 mi13:23:252:57:597:257:51
7:51
-1:42
40K
24.85 mi13:31:373:06:117:298:12
9:35
+1:44
25.2M
25.20 mi13:34:393:09:137:313:02
8:48
-0:47
Finish
26.22 mi13:42:023:16:367:307:23
7:15
-1:33

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

6:23 /mi

Average Pace

7:30 /mi

Slowest Pace

9:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:35

44% of race

Time at Steady Pace

1:03:26

32% of race

Time at Slower Pace

46:35

24% of race

Average Pace: 7:30 /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 mi10:45:1519:496:2319:49
6:23
#2563
10K
6.21 mi11:05:1939:536:2520:04
6:28
#2630
15K
9.32 mi11:26:001:00:346:3020:41
6:39
#2953
20K
12.43 mi11:47:231:21:576:3621:23
6:53
#3239
Half
13.11 mi11:52:011:26:356:364:38
6:47
#3284
25K
15.53 mi12:09:421:44:166:4317:41
7:18
#3744
30K
18.64 mi12:34:122:08:466:5424:30
7:53
#4477
20M
20.00 mi12:47:422:22:167:0713:30
9:56
#5322
21M
21.00 mi12:57:352:32:097:159:53
9:53
#5646
35K
21.75 mi13:03:362:38:107:166:01
8:03
#5673
23M
23.00 mi13:15:342:50:087:2411:58
9:33
#6076
24M
24.00 mi13:23:252:57:597:257:51
7:51
#5984
40K
24.85 mi13:31:373:06:117:298:12
9:35
#6234
25.2M
25.20 mi13:34:393:09:137:313:02
8:48
#6193
Finish
26.22 mi13:42:023:16:367:307:23
7:15
#6052
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi2563246724673639(Top 14%)3441(Top 24%)3441(Top 155%)
10K6.21 mi3.10 mi2630-672531-642531-642758(Top 11%)2640(Top 18%)2640(Top 119%)
15K9.32 mi3.11 mi2953-3232826-2952826-2953639(Top 14%)3441(Top 24%)3441(Top 155%)
20K12.43 mi3.11 mi3239-2863083-2573083-2574510(Top 18%)4169(Top 29%)4169(Top 188%)
Half13.11 mi0.68 mi3284-453124-413124-414478(Top 18%)4144(Top 28%)4144(Top 187%)
25K15.53 mi2.42 mi3744-4603537-4133537-4135785(Top 23%)5043(Top 35%)5043(Top 227%)
30K18.64 mi3.11 mi4477-7334133-5964133-5967194(Top 28%)5733(Top 39%)5733(Top 258%)
20M20.00 mi1.36 mi5322-8454779-6464779-64616227(Top 64%)9861(Top 68%)9861(Top 445%)
21M21.00 mi1.00 mi5646-3244980-2014980-20112471(Top 49%)7925(Top 54%)7925(Top 357%)
35K21.75 mi0.75 mi5673-274976+44976+48009(Top 31%)5749(Top 39%)5749(Top 259%)
23M23.00 mi1.25 mi6076-4035220-2445220-24413734(Top 54%)8412(Top 58%)8412(Top 379%)
24M24.00 mi1.00 mi5984+925128+925128+925810(Top 23%)4361(Top 30%)4361(Top 197%)
40K24.85 mi0.85 mi6234-2505253-1255253-12513422(Top 53%)8134(Top 56%)8134(Top 367%)
25.2M25.20 mi0.35 mi6193+415210+435210+435623(Top 22%)4068(Top 28%)4068(Top 183%)
Finish26.22 mi1.02 mi6052+1415089+1215089+1214225(Top 17%)3345(Top 23%)3345(Top 151%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3639

Males

3441

M45-49

3441

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2758

Males

2640

M45-49

2640

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3639

Males

3441

M45-49

3441

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4510

Males

4169

M45-49

4169

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4478

Males

4144

M45-49

4144

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

5785

Males

5043

M45-49

5043

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7194

Males

5733

M45-49

5733

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

16227

Males

9861

M45-49

9861

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

12471

Males

7925

M45-49

7925

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8009

Males

5749

M45-49

5749

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

13734

Males

8412

M45-49

8412

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

5810

Males

4361

M45-49

4361

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

13422

Males

8134

M45-49

8134

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5623

Males

4068

M45-49

4068

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4225

Males

3345

M45-49

3345

Passing Analysis

Category:
Athletes Passed
780
Passed By
4269
Net Change
-3489
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2563
5K → 10K106173-67#2563#2630
10K → 15K24347-323#2630#2953
15K → 20K44330-286#2953#3239
20K → Half1257-45#3239#3284
Half → 25K40500-460#3284#3744
25K → 30K54787-733#3744#4477
30K → 20M12857-845#4477#5322
20M → 21M28352-324#5322#5646
21M → 35K6188-27#5646#5673
35K → 23M37440-403#5673#6076
23M → 24M12634+92#6076#5984
24M → 40K29279-250#5984#6234
40K → 25.2M5615+41#6234#6193
25.2M → Finish15110+141#6193#6052
TOTALS7804269-3489
📊

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