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BOSTON MARATHON 2025

Alex Kolar

Bib: 2182•M

VA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 38%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:37
Rank: #7469
Start → 5K
21:37 | 6:57/mi
10K· 6.21 mi
43:03
Rank: #7361 (+108)
5K → 10K
21:26 | 6:54/mi
15K· 9.32 mi
1:04:24
Rank: #7146 (+215)
10K → 15K
21:21 | 6:52/mi
20K· 12.43 mi
1:25:42
Rank: #6784 (+362)
15K → 20K
21:18 | 6:51/mi
Half· 13.11 mi
1:30:22
Rank: #6776 (+8)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:47:13
Rank: #6583 (+193)
Half → 25K
16:51 | 6:57/mi
30K· 18.64 mi
2:09:26
Rank: #6284 (+299)
25K → 30K
22:13 | 7:09/mi
20M
2:19:31
Rank: #6229 (+55)
30K → 20M
10:05 | 7:25/mi
21M
2:28:05
Rank: #6392 (-163)
20M → 21M
8:34 | 8:34/mi
35K· 21.75 mi
2:33:50
Rank: #6456 (-64)
21M → 35K
5:45 | 7:41/mi
23M
2:44:20
Rank: #6709 (-253)
35K → 23M
10:30 | 8:23/mi
24M
2:52:24
Rank: #6890 (-181)
23M → 24M
8:04 | 8:04/mi
40K· 24.85 mi
2:59:29
Rank: #7020 (-130)
24M → 40K
7:05 | 8:17/mi
25.2M
3:02:36
Rank: #7083 (-63)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:10:33
Rank: #7214 (-131)
25.2M → Finish
7:57 | 7:48/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:22
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:40:11
Pace7:39 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1721:376:5721:37
6:57
-
10K
6.21 mi10:43:4343:036:5621:26
6:54
-0:03
15K
9.32 mi11:05:041:04:246:5521:21
6:52
-0:02
20K
12.43 mi11:26:221:25:426:5421:18
6:51
-0:01
Half
13.11 mi11:31:021:30:226:544:40
6:50
-0:01
25K
15.53 mi11:47:531:47:136:5416:51
6:57
+0:07
30K
18.64 mi12:10:062:09:266:5722:13
7:09
+0:12
20M
20.00 mi12:20:112:19:316:5910:05
7:25
+0:16
21M
21.00 mi12:28:452:28:057:038:34
8:34
+1:09
35K
21.75 mi12:34:302:33:507:045:45
7:41
-0:53
23M
23.00 mi12:45:002:44:207:0910:30
8:23
+0:42
24M
24.00 mi12:53:042:52:247:118:04
8:04
-0:19
40K
24.85 mi13:00:092:59:297:137:05
8:17
+0:13
25.2M
25.20 mi13:03:163:02:367:153:07
9:02
+0:45
Finish
26.22 mi13:11:133:10:337:167:57
7:48
-1:14

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

6:50 /mi

Average Pace

7:16 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:13

56% of race

Time at Steady Pace

38:03

20% of race

Time at Slower Pace

45:17

24% of race

Average Pace: 7:16 /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 mi10:22:1721:376:5721:37
6:57
#7469
10K
6.21 mi10:43:4343:036:5621:26
6:54
#7361
15K
9.32 mi11:05:041:04:246:5521:21
6:52
#7146
20K
12.43 mi11:26:221:25:426:5421:18
6:51
#6784
Half
13.11 mi11:31:021:30:226:544:40
6:50
#6776
25K
15.53 mi11:47:531:47:136:5416:51
6:57
#6583
30K
18.64 mi12:10:062:09:266:5722:13
7:09
#6284
20M
20.00 mi12:20:112:19:316:5910:05
7:25
#6229
21M
21.00 mi12:28:452:28:057:038:34
8:34
#6392
35K
21.75 mi12:34:302:33:507:045:45
7:41
#6456
23M
23.00 mi12:45:002:44:207:0910:30
8:23
#6709
24M
24.00 mi12:53:042:52:247:118:04
8:04
#6890
40K
24.85 mi13:00:092:59:297:137:05
8:17
#7020
25.2M
25.20 mi13:03:163:02:367:153:07
9:02
#7083
Finish
26.22 mi13:11:133:10:337:167:57
7:48
#7214
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7469664466446749(Top 24%)6063(Top 38%)6063(Top 107%)
10K6.21 mi3.10 mi7361+1086559+856559+857222(Top 25%)6450(Top 40%)6450(Top 114%)
15K9.32 mi3.11 mi7146+2156395+1646395+1646749(Top 24%)6063(Top 38%)6063(Top 107%)
20K12.43 mi3.11 mi6784+3626117+2786117+2785827(Top 21%)5297(Top 33%)5297(Top 94%)
Half13.11 mi0.68 mi6776+86108+96108+96449(Top 23%)5789(Top 36%)5789(Top 103%)
25K15.53 mi2.42 mi6583+1935934+1745934+1745976(Top 21%)5380(Top 33%)5380(Top 95%)
30K18.64 mi3.11 mi6284+2995660+2745660+2745610(Top 20%)5022(Top 31%)5022(Top 89%)
20M20.00 mi1.36 mi6229+555603+575603+576487(Top 23%)5513(Top 34%)5513(Top 98%)
21M21.00 mi1.00 mi6392-1635711-1085711-10810850(Top 38%)7789(Top 48%)7789(Top 138%)
35K21.75 mi0.75 mi6456-645747-365747-369894(Top 35%)7294(Top 45%)7294(Top 129%)
23M23.00 mi1.25 mi6709-2535893-1465893-14612555(Top 44%)8486(Top 53%)8486(Top 150%)
24M24.00 mi1.00 mi6890-1815995-1025995-10211649(Top 41%)7964(Top 49%)7964(Top 141%)
40K24.85 mi0.85 mi7020-1306047-526047-5212024(Top 42%)8057(Top 50%)8057(Top 143%)
25.2M25.20 mi0.35 mi7083-636073-266073-2611902(Top 42%)7913(Top 49%)7913(Top 140%)
Finish26.22 mi1.02 mi7214-1316139-666139-6611398(Top 40%)7693(Top 48%)7693(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6749

Males

6063

M18-39

6063

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

7222

Males

6450

M18-39

6450

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6749

Males

6063

M18-39

6063

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5827

Males

5297

M18-39

5297

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6449

Males

5789

M18-39

5789

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5976

Males

5380

M18-39

5380

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5610

Males

5022

M18-39

5022

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6487

Males

5513

M18-39

5513

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10850

Males

7789

M18-39

7789

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9894

Males

7294

M18-39

7294

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12555

Males

8486

M18-39

8486

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11649

Males

7964

M18-39

7964

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

12024

Males

8057

M18-39

8057

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11902

Males

7913

M18-39

7913

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11398

Males

7693

M18-39

7693

Passing Analysis

Category:
Athletes Passed
1787
Passed By
1532
Net Change
+255
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7469
5K → 10K256148+108#7469#7361
10K → 15K26348+215#7361#7146
15K → 20K37614+362#7146#6784
20K → Half3123+8#6784#6776
Half → 25K22431+193#6776#6583
25K → 30K34041+299#6583#6284
30K → 20M10853+55#6284#6229
20M → 21M24187-163#6229#6392
21M → 35K2993-64#6392#6456
35K → 23M37290-253#6456#6709
23M → 24M36217-181#6709#6890
24M → 40K29159-130#6890#7020
40K → 25.2M1174-63#7020#7083
25.2M → Finish23154-131#7083#7214
TOTALS17871532+255
📊

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