Boston Marathon logo
BOSTON MARATHON 2023

Militsa Mircheva

Bib: 132•F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 1%
Gender (Female)
#0 / 11423
Top 0.3%
Division (F18-39)
#0 / 4884
Top 0.6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:53
Rank: #340
Start → 5K
17:53 | 5:45/mi
10K· 6.21 mi
35:34
Rank: #324 (+16)
5K → 10K
17:41 | 5:41/mi
15K· 9.32 mi
53:14
Rank: #296 (+28)
10K → 15K
17:41 | 5:41/mi
20K· 12.43 mi
1:11:13
Rank: #299 (-3)
15K → 20K
17:59 | 5:47/mi
Half· 13.11 mi
1:15:08
Rank: #298 (+1)
20K → Half
3:55 | 5:44/mi
25K· 15.53 mi
1:29:10
Rank: #293 (+5)
Half → 25K
14:02 | 5:47/mi
30K· 18.64 mi
1:47:45
Rank: #290 (+3)
25K → 30K
18:35 | 5:59/mi
20M
1:56:27
Rank: #316 (-26)
30K → 20M
8:42 | 6:24/mi
21M
2:03:22
Rank: #337 (-21)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:08:04
Rank: #358 (-21)
21M → 35K
4:42 | 6:17/mi
23M
2:16:04
Rank: #373 (-15)
35K → 23M
8:00 | 6:23/mi
24M
2:22:15
Rank: #384 (-11)
23M → 24M
6:11 | 6:11/mi
40K· 24.85 mi
2:27:42
Rank: #388 (-4)
24M → 40K
5:27 | 6:22/mi
25.2M
2:30:02
Rank: #394 (-6)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:35:57
Rank: #384 (+10)
25.2M → Finish
5:55 | 5:48/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
Time1:15:08
Pace5:44 /mi
2nd Half
Distance13.11 mi
Time1:20:49
Pace6:10 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:04:5417:535:4517:53
5:45
-
10K
6.21 mi10:22:3535:345:4317:41
5:41
-0:04
15K
9.32 mi10:40:1553:145:4317:41
5:41
0:00
20K
12.43 mi10:58:141:11:135:4417:59
5:47
+0:06
Half
13.11 mi11:02:091:15:085:443:55
5:44
-0:03
25K
15.53 mi11:16:111:29:105:4414:02
5:47
+0:03
30K
18.64 mi11:34:461:47:455:4718:35
5:59
+0:12
20M
20.00 mi11:43:281:56:275:498:42
6:24
+0:25
21M
21.00 mi11:50:232:03:225:526:55
6:55
+0:31
35K
21.75 mi11:55:052:08:045:534:42
6:17
-0:38
23M
23.00 mi12:03:052:16:045:558:00
6:23
+0:06
24M
24.00 mi12:09:162:22:155:566:11
6:11
-0:12
40K
24.85 mi12:14:432:27:425:575:27
6:22
+0:11
25.2M
25.20 mi12:17:032:30:025:572:20
6:46
+0:24
Finish
26.22 mi12:22:582:35:575:575:55
5:48
-0:58

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

5:41 /mi

Average Pace

5:57 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:10

57% of race

Time at Steady Pace

24:30

16% of race

Time at Slower Pace

42:17

27% of race

Average Pace: 5:57 /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 mi10:04:5417:535:4517:53
5:45
#340
10K
6.21 mi10:22:3535:345:4317:41
5:41
#324
15K
9.32 mi10:40:1553:145:4317:41
5:41
#296
20K
12.43 mi10:58:141:11:135:4417:59
5:47
#299
Half
13.11 mi11:02:091:15:085:443:55
5:44
#298
25K
15.53 mi11:16:111:29:105:4414:02
5:47
#293
30K
18.64 mi11:34:461:47:455:4718:35
5:59
#290
20M
20.00 mi11:43:281:56:275:498:42
6:24
#316
21M
21.00 mi11:50:232:03:225:526:55
6:55
#337
35K
21.75 mi11:55:052:08:045:534:42
6:17
#358
23M
23.00 mi12:03:052:16:045:558:00
6:23
#373
24M
24.00 mi12:09:162:22:155:566:11
6:11
#384
40K
24.85 mi12:14:432:27:425:575:27
6:22
#388
25.2M
25.20 mi12:17:032:30:025:572:20
6:46
#394
Finish
26.22 mi12:22:582:35:575:575:55
5:48
#384
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi3403030232(Top 0.9%)29(Top 0.3%)29(Top 0.6%)
10K6.21 mi3.10 mi324+1632-232-2293(Top 1%)33(Top 0.3%)33(Top 0.7%)
15K9.32 mi3.11 mi296+2830+230+2232(Top 0.9%)29(Top 0.3%)29(Top 0.6%)
20K12.43 mi3.11 mi299-33030296(Top 1%)30(Top 0.3%)30(Top 0.6%)
Half13.11 mi0.68 mi298+13030331(Top 1%)29(Top 0.3%)29(Top 0.6%)
25K15.53 mi2.42 mi293+532-232-2264(Top 1.0%)27(Top 0.2%)27(Top 0.6%)
30K18.64 mi3.11 mi290+33232368(Top 1%)31(Top 0.3%)31(Top 0.6%)
20M20.00 mi1.36 mi316-2632321159(Top 4%)51(Top 0.4%)51(Top 1%)
21M21.00 mi1.00 mi337-2132321848(Top 7%)86(Top 0.8%)86(Top 2%)
35K21.75 mi0.75 mi358-2132321549(Top 6%)76(Top 0.7%)76(Top 2%)
23M23.00 mi1.25 mi373-1533-133-11088(Top 4%)57(Top 0.5%)57(Top 1%)
24M24.00 mi1.00 mi384-113333996(Top 4%)51(Top 0.4%)51(Top 1%)
40K24.85 mi0.85 mi388-433331151(Top 4%)62(Top 0.5%)62(Top 1%)
25.2M25.20 mi0.35 mi394-634-134-11114(Top 4%)53(Top 0.5%)53(Top 1%)
Finish26.22 mi1.02 mi384+1033+133+1402(Top 2%)21(Top 0.2%)21(Top 0.4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.9%
×21stories
+97ft-345ft

Overall

232

Females

29

F18-39

29

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

293

Females

33

F18-39

33

10K→15K

6.2 - 9.3 mi

Top 0.9%
×3stories
+67ft-78ft

Overall

232

Females

29

F18-39

29

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

296

Females

30

F18-39

30

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

331

Females

29

F18-39

29

Half→25K

13.1 - 15.5 mi

Top 1.0%
×4stories
+66ft-88ft

Overall

264

Females

27

F18-39

27

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

368

Females

31

F18-39

31

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1159

Females

51

F18-39

51

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1848

Females

86

F18-39

86

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1549

Females

76

F18-39

76

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1088

Females

57

F18-39

57

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

996

Females

51

F18-39

51

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1151

Females

62

F18-39

62

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1114

Females

53

F18-39

53

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

402

Females

21

F18-39

21

Passing Analysis

Category:
Athletes Passed
125
Passed By
169
Net Change
-44
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#340
5K → 10K2610+16#340#324
10K → 15K302+28#324#296
15K → 20K811-3#296#299
20K → Half32+1#299#298
Half → 25K105+5#298#293
25K → 30K107+3#293#290
30K → 20M127-26#290#316
20M → 21M021-21#316#337
21M → 35K122-21#337#358
35K → 23M924-15#358#373
23M → 24M213-11#373#384
24M → 40K1014-4#384#388
40K → 25.2M39-6#388#394
25.2M → Finish122+10#394#384
TOTALS125169-44
📊

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