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BOSTON MARATHON 2025

Stefan Liotchev

Bib: 5501•M

NC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Division (M18-39)
#0 / 5642
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:01
Rank: #3425
Start → 5K
20:01 | 6:27/mi
10K· 6.21 mi
40:06
Rank: #3434 (-9)
5K → 10K
20:05 | 6:28/mi
15K· 9.32 mi
1:00:23
Rank: #3538 (-104)
10K → 15K
20:17 | 6:32/mi
20K· 12.43 mi
1:20:53
Rank: #3580 (-42)
15K → 20K
20:30 | 6:36/mi
Half· 13.11 mi
1:25:16
Rank: #3542 (+38)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:41:23
Rank: #3558 (-16)
Half → 25K
16:07 | 6:39/mi
30K· 18.64 mi
2:03:06
Rank: #3676 (-118)
25K → 30K
21:43 | 6:59/mi
20M
2:12:38
Rank: #3662 (+14)
30K → 20M
9:32 | 7:01/mi
21M
2:19:57
Rank: #3636 (+26)
20M → 21M
7:19 | 7:19/mi
35K· 21.75 mi
2:25:01
Rank: #3623 (+13)
21M → 35K
5:04 | 6:46/mi
23M
2:33:46
Rank: #3594 (+29)
35K → 23M
8:45 | 6:59/mi
24M
2:40:40
Rank: #3562 (+32)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:46:43
Rank: #3568 (-6)
24M → 40K
6:03 | 7:05/mi
25.2M
2:49:20
Rank: #3557 (+11)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:56:04
Rank: #3510 (+47)
25.2M → Finish
6:44 | 6:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:16
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:30:48
Pace6:56 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0420:016:2720:01
6:27
-
10K
6.21 mi10:43:0940:066:2720:05
6:28
+0:01
15K
9.32 mi11:03:261:00:236:2920:17
6:32
+0:04
20K
12.43 mi11:23:561:20:536:3120:30
6:36
+0:04
Half
13.11 mi11:28:191:25:166:304:23
6:25
-0:11
25K
15.53 mi11:44:261:41:236:3216:07
6:39
+0:14
30K
18.64 mi12:06:092:03:066:3621:43
6:59
+0:20
20M
20.00 mi12:15:412:12:386:389:32
7:01
+0:02
21M
21.00 mi12:23:002:19:576:407:19
7:19
+0:18
35K
21.75 mi12:28:042:25:016:405:04
6:46
-0:33
23M
23.00 mi12:36:492:33:466:418:45
6:59
+0:13
24M
24.00 mi12:43:432:40:406:426:54
6:54
-0:05
40K
24.85 mi12:49:462:46:436:426:03
7:05
+0:11
25.2M
25.20 mi12:52:232:49:206:432:37
7:35
+0:30
Finish
26.22 mi12:59:072:56:046:436:44
6:36
-0:59

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

6:25 /mi

Average Pace

6:43 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:05

91% of race

Time at Steady Pace

13:22

8% of race

Time at Slower Pace

2:37

1% of race

Average Pace: 6:43 /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 mi10:23:0420:016:2720:01
6:27
#3425
10K
6.21 mi10:43:0940:066:2720:05
6:28
#3434
15K
9.32 mi11:03:261:00:236:2920:17
6:32
#3538
20K
12.43 mi11:23:561:20:536:3120:30
6:36
#3580
Half
13.11 mi11:28:191:25:166:304:23
6:25
#3542
25K
15.53 mi11:44:261:41:236:3216:07
6:39
#3558
30K
18.64 mi12:06:092:03:066:3621:43
6:59
#3676
20M
20.00 mi12:15:412:12:386:389:32
7:01
#3662
21M
21.00 mi12:23:002:19:576:407:19
7:19
#3636
35K
21.75 mi12:28:042:25:016:405:04
6:46
#3623
23M
23.00 mi12:36:492:33:466:418:45
6:59
#3594
24M
24.00 mi12:43:432:40:406:426:54
6:54
#3562
40K
24.85 mi12:49:462:46:436:426:03
7:05
#3568
25.2M
25.20 mi12:52:232:49:206:432:37
7:35
#3557
Finish
26.22 mi12:59:072:56:046:436:44
6:36
#3510
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3425325432543745(Top 13%)3534(Top 22%)3534(Top 63%)
10K6.21 mi3.10 mi3434-93261-73261-73486(Top 12%)3305(Top 21%)3305(Top 59%)
15K9.32 mi3.11 mi3538-1043354-933354-933745(Top 13%)3534(Top 22%)3534(Top 63%)
20K12.43 mi3.11 mi3580-423390-363390-363691(Top 13%)3486(Top 22%)3486(Top 62%)
Half13.11 mi0.68 mi3542+383357+333357+333263(Top 11%)3104(Top 19%)3104(Top 55%)
25K15.53 mi2.42 mi3558-163367-103367-103781(Top 13%)3546(Top 22%)3546(Top 63%)
30K18.64 mi3.11 mi3676-1183470-1033470-1034631(Top 16%)4226(Top 26%)4226(Top 75%)
20M20.00 mi1.36 mi3662+143452+183452+184200(Top 15%)3839(Top 24%)3839(Top 68%)
21M21.00 mi1.00 mi3636+263423+293423+293707(Top 13%)3389(Top 21%)3389(Top 60%)
35K21.75 mi0.75 mi3623+133406+173406+173960(Top 14%)3560(Top 22%)3560(Top 63%)
23M23.00 mi1.25 mi3594+293376+303376+303702(Top 13%)3346(Top 21%)3346(Top 59%)
24M24.00 mi1.00 mi3562+323342+343342+344092(Top 14%)3609(Top 22%)3609(Top 64%)
40K24.85 mi0.85 mi3568-63335+73335+74341(Top 15%)3739(Top 23%)3739(Top 66%)
25.2M25.20 mi0.35 mi3557+113322+133322+133835(Top 14%)3317(Top 21%)3317(Top 59%)
Finish26.22 mi1.02 mi3510+473277+453277+453379(Top 12%)2963(Top 18%)2963(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3745

Males

3534

M18-39

3534

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3486

Males

3305

M18-39

3305

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3745

Males

3534

M18-39

3534

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3691

Males

3486

M18-39

3486

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3263

Males

3104

M18-39

3104

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3781

Males

3546

M18-39

3546

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4631

Males

4226

M18-39

4226

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4200

Males

3839

M18-39

3839

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3707

Males

3389

M18-39

3389

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3960

Males

3560

M18-39

3560

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3702

Males

3346

M18-39

3346

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

4092

Males

3609

M18-39

3609

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4341

Males

3739

M18-39

3739

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3835

Males

3317

M18-39

3317

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3379

Males

2963

M18-39

2963

Passing Analysis

Category:
Athletes Passed
900
Passed By
985
Net Change
-85
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3425
5K → 10K118127-9#3425#3434
10K → 15K61165-104#3434#3538
15K → 20K89131-42#3538#3580
20K → Half435+38#3580#3542
Half → 25K6884-16#3542#3558
25K → 30K71189-118#3558#3676
30K → 20M6652+14#3676#3662
20M → 21M6135+26#3662#3636
21M → 35K3623+13#3636#3623
35K → 23M7748+29#3623#3594
23M → 24M6634+32#3594#3562
24M → 40K4652-6#3562#3568
40K → 25.2M3019+11#3568#3557
25.2M → Finish6821+47#3557#3510
TOTALS900985-85
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing