Boston Marathon logo
BOSTON MARATHON 2025

Chris Butko

Bib: 4793•M

VA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 5%
Division (M18-39)
#0 / 5642
Top 13%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:14
Rank: #1794
Start → 5K
6:11/mi
19:14 split
10K· 6.21 mi
38:21
Rank: #1729 (+65)
5K → 10K
6:09/mi
19:07 split
15K· 9.32 mi
57:40
Rank: #1795 (-66)
10K → 15K
6:13/mi
19:19 split
20K· 12.43 mi
1:16:51
Rank: #1684 (+111)
15K → 20K
6:10/mi
19:11 split
Half· 13.11 mi
1:21:02
Rank: #1681 (+3)
20K → Half
6:08/mi
4:11 split
25K· 15.53 mi
1:36:01
Rank: #1602 (+79)
Half → 25K
6:11/mi
14:59 split
30K· 18.64 mi
1:55:11
Rank: #1398 (+204)
25K → 30K
6:10/mi
19:10 split
20M
2:03:30
Rank: #1297 (+101)
30K → 20M
6:07/mi
8:19 split
21M
2:09:47
Rank: #1210 (+87)
20M → 21M
6:17/mi
6:17 split
35K· 21.75 mi
2:14:15
Rank: #1168 (+42)
21M → 35K
5:58/mi
4:28 split
23M
2:21:52
Rank: #1068 (+100)
35K → 23M
6:05/mi
7:37 split
24M
2:27:50
Rank: #1016 (+52)
23M → 24M
5:58/mi
5:58 split
40K· 24.85 mi
2:33:02
Rank: #978 (+38)
24M → 40K
6:05/mi
5:12 split
25.2M
2:35:16
Rank: #959 (+19)
40K → 25.2M
6:29/mi
2:14 split
Finish· 26.22 mi
2:41:05
Rank: #909 (+50)
25.2M → Finish
5:42/mi
5:49 split

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 Half
Distance13.11 mi
Time1:21:02
Pace6:11 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:20:03
Pace6:06 /mi
📊Negative Split: 1.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2019:146:1119:14
6:11
-
10K
6.21 mi10:41:2738:216:1019:07
6:09
-0:02
15K
9.32 mi11:00:4657:406:1119:19
6:13
+0:04
20K
12.43 mi11:19:571:16:516:1119:11
6:10
-0:03
Half
13.11 mi11:24:081:21:026:114:11
6:08
-0:02
25K
15.53 mi11:39:071:36:016:1114:59
6:11
+0:03
30K
18.64 mi11:58:171:55:116:1119:10
6:10
-0:01
20M
20.00 mi12:06:362:03:306:108:19
6:07
-0:03
21M
21.00 mi12:12:532:09:476:116:17
6:17
+0:10
35K
21.75 mi12:17:212:14:156:104:28
5:58
-0:19
23M
23.00 mi12:24:582:21:526:107:37
6:05
+0:07
24M
24.00 mi12:30:562:27:506:105:58
5:58
-0:07
40K
24.85 mi12:36:082:33:026:095:12
6:05
+0:07
25.2M
25.20 mi12:38:222:35:166:102:14
6:29
+0:24
Finish
26.22 mi12:44:112:41:056:095:49
5:42
-0:47

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

5:42 /mi

Average Pace

6:09 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:34

95% of race

Time at Steady Pace

8:31

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:09 /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 mi10:22:2019:146:1119:14
6:11
#1794
10K
6.21 mi10:41:2738:216:1019:07
6:09
#1729
15K
9.32 mi11:00:4657:406:1119:19
6:13
#1795
20K
12.43 mi11:19:571:16:516:1119:11
6:10
#1684
Half
13.11 mi11:24:081:21:026:114:11
6:08
#1681
25K
15.53 mi11:39:071:36:016:1114:59
6:11
#1602
30K
18.64 mi11:58:171:55:116:1119:10
6:10
#1398
20M
20.00 mi12:06:362:03:306:108:19
6:07
#1297
21M
21.00 mi12:12:532:09:476:116:17
6:17
#1210
35K
21.75 mi12:17:212:14:156:104:28
5:58
#1168
23M
23.00 mi12:24:582:21:526:107:37
6:05
#1068
24M
24.00 mi12:30:562:27:506:105:58
5:58
#1016
40K
24.85 mi12:36:082:33:026:095:12
6:05
#978
25.2M
25.20 mi12:38:222:35:166:102:14
6:29
#959
Finish
26.22 mi12:44:112:41:056:095:49
5:42
#909
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1794170417041922(Top 7%)1830(Top 11%)1830(Top 32%)
10K6.21 mi3.10 mi1729+651644+601644+601676(Top 6%)1595(Top 10%)1595(Top 28%)
15K9.32 mi3.11 mi1795-661707-631707-631922(Top 7%)1830(Top 11%)1830(Top 32%)
20K12.43 mi3.11 mi1684+1111599+1081599+1081463(Top 5%)1385(Top 9%)1385(Top 25%)
Half13.11 mi0.68 mi1681+31596+31596+31611(Top 6%)1530(Top 10%)1530(Top 27%)
25K15.53 mi2.42 mi1602+791519+771519+771359(Top 5%)1288(Top 8%)1288(Top 23%)
30K18.64 mi3.11 mi1398+2041322+1971322+197837(Top 3%)783(Top 5%)783(Top 14%)
20M20.00 mi1.36 mi1297+1011224+981224+98576(Top 2%)542(Top 3%)542(Top 10%)
21M21.00 mi1.00 mi1210+871139+851139+85360(Top 1%)337(Top 2%)337(Top 6%)
35K21.75 mi0.75 mi1168+421100+391100+39679(Top 2%)636(Top 4%)636(Top 11%)
23M23.00 mi1.25 mi1068+1001006+941006+94464(Top 2%)437(Top 3%)437(Top 8%)
24M24.00 mi1.00 mi1016+52957+49957+49518(Top 2%)482(Top 3%)482(Top 9%)
40K24.85 mi0.85 mi978+38921+36921+36516(Top 2%)482(Top 3%)482(Top 9%)
25.2M25.20 mi0.35 mi959+19902+19902+19432(Top 2%)399(Top 2%)399(Top 7%)
Finish26.22 mi1.02 mi909+50852+50852+50377(Top 1%)354(Top 2%)354(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21story building
+97ft-345ft

Overall

1922

Males

1830

M18-39

1830

5K→10K

3.1 - 6.2 mi

Top 6%
×5story building
+79ft-138ft

Overall

1676

Males

1595

M18-39

1595

10K→15K

6.2 - 9.3 mi

Top 7%
×3story building
+67ft-78ft

Overall

1922

Males

1830

M18-39

1830

15K→20K

9.3 - 12.4 mi

Top 5%
×5story building
+106ft-86ft

Overall

1463

Males

1385

M18-39

1385

20K→Half

12.4 - 13.1 mi

Top 6%
×2story building
+19ft-37ft

Overall

1611

Males

1530

M18-39

1530

Half→25K

13.1 - 15.5 mi

Top 5%
×4story building
+66ft-88ft

Overall

1359

Males

1288

M18-39

1288

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

837

Males

783

M18-39

783

30K→20M

18.6 - 20.0 mi

Top 2%
×5story building
+64ft-50ft

Overall

576

Males

542

M18-39

542

20M→21M

20.0 - 21.0 mi

Top 1%
×8story building
+106ft-24ft

Overall

360

Males

337

M18-39

337

21M→35K

21.0 - 21.8 mi

Top 2%
×7story building
+17ft-86ft

Overall

679

Males

636

M18-39

636

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

464

Males

437

M18-39

437

23M→24M

23.0 - 24.0 mi

Top 2%
×6story building
+12ft-82ft

Overall

518

Males

482

M18-39

482

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

516

Males

482

M18-39

482

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

432

Males

399

M18-39

399

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2story building
+22ft-21ft

Overall

377

Males

354

M18-39

354

Passing Analysis

Category:
Athletes Passed
1073
Passed By
188
Net Change
+885
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1794
5K → 10K12156+65#1794#1729
10K → 15K34100-66#1729#1795
15K → 20K1176+111#1795#1684
20K → Half96+3#1684#1681
Half → 25K867+79#1681#1602
25K → 30K2073+204#1602#1398
30K → 20M1021+101#1398#1297
20M → 21M881+87#1297#1210
21M → 35K431+42#1210#1168
35K → 23M1022+100#1168#1068
23M → 24M520+52#1068#1016
24M → 40K402+38#1016#978
40K → 25.2M190+19#978#959
25.2M → Finish533+50#959#909
TOTALS1073188+885
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing