Boston Marathon logo
BOSTON MARATHON 2023

Constantin Ghervas

Bib: 2707•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 10%
Gender (Male)
#0 / 15176
Top 17%
Division (M18-39)
#0 / 5285
Top 37%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:51
Rank: #820
Start → 5K
18:51 | 6:04/mi
10K· 6.21 mi
37:54
Rank: #971 (-151)
5K → 10K
19:03 | 6:08/mi
15K· 9.32 mi
57:27
Rank: #1113 (-142)
10K → 15K
19:33 | 6:18/mi
20K· 12.43 mi
1:18:08
Rank: #1459 (-346)
15K → 20K
20:41 | 6:39/mi
Half· 13.11 mi
1:22:32
Rank: #1520 (-61)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:38:28
Rank: #1659 (-139)
Half → 25K
15:56 | 6:34/mi
30K· 18.64 mi
1:59:26
Rank: #1765 (-106)
25K → 30K
20:58 | 6:45/mi
20M
2:08:54
Rank: #1882 (-117)
30K → 20M
9:28 | 6:58/mi
21M
2:16:28
Rank: #1995 (-113)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:21:30
Rank: #2047 (-52)
21M → 35K
5:02 | 6:44/mi
23M
2:30:43
Rank: #2200 (-153)
35K → 23M
9:13 | 7:22/mi
24M
2:38:02
Rank: #2323 (-123)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
2:44:32
Rank: #2423 (-100)
24M → 40K
6:30 | 7:36/mi
25.2M
2:47:25
Rank: #2498 (-75)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
2:55:01
Rank: #2695 (-197)
25.2M → Finish
7:36 | 7:27/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
Time1:22:32
Pace6:18 /mi
2nd Half
Distance13.11 mi
Time1:32:29
Pace7:03 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2418:516:0418:51
6:04
-
10K
6.21 mi10:38:2737:546:0619:03
6:08
+0:04
15K
9.32 mi10:58:0057:276:1019:33
6:18
+0:10
20K
12.43 mi11:18:411:18:086:1720:41
6:39
+0:21
Half
13.11 mi11:23:051:22:326:184:24
6:27
-0:12
25K
15.53 mi11:39:011:38:286:2015:56
6:34
+0:07
30K
18.64 mi11:59:591:59:266:2420:58
6:45
+0:11
20M
20.00 mi12:09:272:08:546:279:28
6:58
+0:13
21M
21.00 mi12:17:012:16:286:307:34
7:34
+0:36
35K
21.75 mi12:22:032:21:306:305:02
6:44
-0:50
23M
23.00 mi12:31:162:30:436:339:13
7:22
+0:38
24M
24.00 mi12:38:352:38:026:357:19
7:19
-0:03
40K
24.85 mi12:45:052:44:326:376:30
7:36
+0:17
25.2M
25.20 mi12:47:582:47:256:392:53
8:22
+0:46
Finish
26.22 mi12:55:342:55:016:417:36
7:27
-0:55

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

6:04 /mi

Average Pace

6:41 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

57:27

33% of race

Time at Steady Pace

1:16:29

44% of race

Time at Slower Pace

41:05

23% of race

Average Pace: 6:40 /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 mi10:19:2418:516:0418:51
6:04
#820
10K
6.21 mi10:38:2737:546:0619:03
6:08
#971
15K
9.32 mi10:58:0057:276:1019:33
6:18
#1113
20K
12.43 mi11:18:411:18:086:1720:41
6:39
#1459
Half
13.11 mi11:23:051:22:326:184:24
6:27
#1520
25K
15.53 mi11:39:011:38:286:2015:56
6:34
#1659
30K
18.64 mi11:59:591:59:266:2420:58
6:45
#1765
20M
20.00 mi12:09:272:08:546:279:28
6:58
#1882
21M
21.00 mi12:17:012:16:286:307:34
7:34
#1995
35K
21.75 mi12:22:032:21:306:305:02
6:44
#2047
23M
23.00 mi12:31:162:30:436:339:13
7:22
#2200
24M
24.00 mi12:38:352:38:026:357:19
7:19
#2323
40K
24.85 mi12:45:052:44:326:376:30
7:36
#2423
25.2M
25.20 mi12:47:582:47:256:392:53
8:22
#2498
Finish
26.22 mi12:55:342:55:016:417:36
7:27
#2695
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi8207717711625(Top 6%)1552(Top 10%)1552(Top 29%)
10K6.21 mi3.10 mi971-151917-146917-1461128(Top 4%)1070(Top 7%)1070(Top 20%)
15K9.32 mi3.11 mi1113-1421054-1371054-1371625(Top 6%)1552(Top 10%)1552(Top 29%)
20K12.43 mi3.11 mi1459-3461392-3381392-3383219(Top 12%)3056(Top 20%)3056(Top 58%)
Half13.11 mi0.68 mi1520-611451-591451-592506(Top 9%)2405(Top 16%)2405(Top 46%)
25K15.53 mi2.42 mi1659-1391587-1361587-1362553(Top 10%)2443(Top 16%)2443(Top 46%)
30K18.64 mi3.11 mi1765-1061689-1021689-1022680(Top 10%)2544(Top 17%)2544(Top 48%)
20M20.00 mi1.36 mi1882-1171800-1111800-1113782(Top 14%)3518(Top 23%)3518(Top 67%)
21M21.00 mi1.00 mi1995-1131911-1111911-1114873(Top 18%)4376(Top 29%)4376(Top 83%)
35K21.75 mi0.75 mi2047-521963-521963-523676(Top 14%)3393(Top 22%)3393(Top 64%)
23M23.00 mi1.25 mi2200-1532108-1452108-1455596(Top 21%)4898(Top 32%)4898(Top 93%)
24M24.00 mi1.00 mi2323-1232223-1152223-1156434(Top 24%)5364(Top 35%)5364(Top 101%)
40K24.85 mi0.85 mi2423-1002317-942317-947281(Top 27%)5780(Top 38%)5780(Top 109%)
25.2M25.20 mi0.35 mi2498-752384-672384-678546(Top 32%)6447(Top 42%)6447(Top 122%)
Finish26.22 mi1.02 mi2695-1972564-1802564-1808162(Top 31%)6235(Top 41%)6235(Top 118%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1625

Males

1552

M18-39

1552

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1128

Males

1070

M18-39

1070

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1625

Males

1552

M18-39

1552

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3219

Males

3056

M18-39

3056

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2506

Males

2405

M18-39

2405

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2553

Males

2443

M18-39

2443

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2680

Males

2544

M18-39

2544

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3782

Males

3518

M18-39

3518

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4873

Males

4376

M18-39

4376

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3676

Males

3393

M18-39

3393

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5596

Males

4898

M18-39

4898

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6434

Males

5364

M18-39

5364

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7281

Males

5780

M18-39

5780

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8546

Males

6447

M18-39

6447

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8162

Males

6235

M18-39

6235

Passing Analysis

Category:
Athletes Passed
110
Passed By
1985
Net Change
-1875
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#820
5K → 10K7158-151#820#971
10K → 15K3145-142#971#1113
15K → 20K4350-346#1113#1459
20K → Half061-61#1459#1520
Half → 25K13152-139#1520#1659
25K → 30K29135-106#1659#1765
30K → 20M8125-117#1765#1882
20M → 21M10123-113#1882#1995
21M → 35K557-52#1995#2047
35K → 23M11164-153#2047#2200
23M → 24M6129-123#2200#2323
24M → 40K5105-100#2323#2423
40K → 25.2M580-75#2423#2498
25.2M → Finish4201-197#2498#2695
TOTALS1101985-1875
📊

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