Boston Marathon logo
BOSTON MARATHON 2023

Juan Mejia

Bib: 10435•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 47%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:21/mi
22:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
45:25
↑ 79↓ 1380.4%
15K· 9.32 mi
7:22/mi
1:08:19
↑ 67↓ 78
20K· 12.43 mi
7:36/mi
1:31:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:37:05
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
1:56:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:21:37
↑ 181↓ 1480.2%
20M
8:41/mi
2:33:25
↑ 64↓ 500.2%
21M
9:31/mi
2:42:56
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
2:49:24
↑ 17↓ 861.7%
23M
9:04/mi
3:00:45
↑ 23↓ 630.6%
24M
9:01/mi
3:09:46
↓ 821.3%
40K· 24.85 mi
9:28/mi
3:17:52
↓ 200.3%
25.2M
10:23/mi
3:21:27
↑ 13↓ 160.2%
Finish· 26.22 mi
9:06/mi
3:30:43
↑ 22↓ 21

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
Time1:37:05
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:53:38
Pace8:40 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5122:507:2122:50
7:21
-
10K
6.21 mi11:11:2645:257:1922:35
7:16
-0:05
15K
9.32 mi11:34:201:08:197:2022:54
7:22
+0:06
20K
12.43 mi11:57:571:31:567:2423:37
7:36
+0:14
Half
13.11 mi12:03:061:37:057:245:09
7:33
-0:03
25K
15.53 mi12:22:071:56:067:2819:01
7:51
+0:18
30K
18.64 mi12:47:382:21:377:3625:31
8:13
+0:22
20M
20.00 mi12:59:262:33:257:4011:48
8:41
+0:28
21M
21.00 mi13:08:572:42:567:469:31
9:31
+0:50
35K
21.75 mi13:15:252:49:247:476:28
8:39
-0:52
23M
23.00 mi13:26:463:00:457:5211:21
9:04
+0:25
24M
24.00 mi13:35:473:09:467:549:01
9:01
-0:03
40K
24.85 mi13:43:533:17:527:588:06
9:28
+0:27
25.2M
25.20 mi13:47:283:21:278:003:35
10:23
+0:55
Finish
26.22 mi13:56:443:30:438:039:16
9:06
-1:17

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

7:16 /mi

Average Pace

8:03 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:06

55% of race

Time at Steady Pace

1:13:25

35% of race

Time at Slower Pace

21:12

10% of race

Average Pace: 8:02 /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 mi10:48:5122:507:2122:50
7:21
#8451
10K
6.21 mi11:11:2645:257:1922:35
7:16
#8506
15K
9.32 mi11:34:201:08:197:2022:54
7:22
#8685
20K
12.43 mi11:57:571:31:567:2423:37
7:36
#8984
Half
13.11 mi12:03:061:37:057:245:09
7:33
#9064
25K
15.53 mi12:22:071:56:067:2819:01
7:51
#9416
30K
18.64 mi12:47:382:21:377:3625:31
8:13
#9948
20M
20.00 mi12:59:262:33:257:4011:48
8:41
#10327
21M
21.00 mi13:08:572:42:567:469:31
9:31
#10680
35K
21.75 mi13:15:252:49:247:476:28
8:39
#10890
23M
23.00 mi13:26:463:00:457:5211:21
9:04
#11287
24M
24.00 mi13:35:473:09:467:549:01
9:01
#11638
40K
24.85 mi13:43:533:17:527:588:06
9:28
#11976
25.2M
25.20 mi13:47:283:21:278:003:35
10:23
#12123
Finish
26.22 mi13:56:443:30:438:039:16
9:06
#12450
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8451727072709106(Top 34%)7609(Top 50%)7609(Top 338%)
10K6.21 mi3.10 mi8506-557277-77277-78633(Top 32%)7352(Top 48%)7352(Top 326%)
15K9.32 mi3.11 mi8685-1797378-1017378-1019106(Top 34%)7609(Top 50%)7609(Top 338%)
20K12.43 mi3.11 mi8984-2997537-1597537-15910100(Top 38%)8126(Top 54%)8126(Top 361%)
Half13.11 mi0.68 mi9064-807585-487585-4810604(Top 40%)8426(Top 56%)8426(Top 374%)
25K15.53 mi2.42 mi9416-3527786-2017786-20111445(Top 43%)8693(Top 57%)8693(Top 386%)
30K18.64 mi3.11 mi9948-5328067-2818067-28112421(Top 47%)8983(Top 59%)8983(Top 399%)
20M20.00 mi1.36 mi10327-3798230-1638230-16314725(Top 55%)9860(Top 65%)9860(Top 438%)
21M21.00 mi1.00 mi10680-3538371-1418371-14116001(Top 60%)10344(Top 68%)10344(Top 459%)
35K21.75 mi0.75 mi10890-2108456-858456-8516049(Top 60%)10299(Top 68%)10299(Top 457%)
23M23.00 mi1.25 mi11287-3978621-1658621-16516357(Top 61%)10385(Top 68%)10385(Top 461%)
24M24.00 mi1.00 mi11638-3518760-1398760-13917283(Top 65%)10748(Top 71%)10748(Top 477%)
40K24.85 mi0.85 mi11976-3388876-1168876-11618223(Top 68%)11134(Top 73%)11134(Top 494%)
25.2M25.20 mi0.35 mi12123-1478931-558931-5518699(Top 70%)11327(Top 75%)11327(Top 503%)
Finish26.22 mi1.02 mi12450-3279059-1289059-12818415(Top 69%)11266(Top 74%)11266(Top 500%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9106

Males

7609

M45-49

7609

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8633

Males

7352

M45-49

7352

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9106

Males

7609

M45-49

7609

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10100

Males

8126

M45-49

8126

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10604

Males

8426

M45-49

8426

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11445

Males

8693

M45-49

8693

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12421

Males

8983

M45-49

8983

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14725

Males

9860

M45-49

9860

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

16001

Males

10344

M45-49

10344

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16049

Males

10299

M45-49

10299

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

16357

Males

10385

M45-49

10385

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

17283

Males

10748

M45-49

10748

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18223

Males

11134

M45-49

11134

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18699

Males

11327

M45-49

11327

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18415

Males

11266

M45-49

11266

Passing Analysis

Category:
Athletes Passed
586*
Passed By
4584
Net Change
-3999
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8451
5K → 10K212267-55#8451#8506
10K → 15K84263-179#8506#8685
15K → 20K56355-299#8685#8984
20K → Half787-80#8984#9064
Half → 25K46398-352#9064#9416
25K → 30K52*584-532#9416#9948
30K → 20M21399-379#9948#10327
20M → 21M21374-353#10327#10680
21M → 35K15225-210#10680#10890
35K → 23M27424-397#10890#11287
23M → 24M9360-351#11287#11638
24M → 40K17355-338#11638#11976
40K → 25.2M5152-147#11976#12123
25.2M → Finish14341-327#12123#12450
TOTALS586*4584-3999

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing