Boston Marathon logo
BOSTON MARATHON 2025

Colin Bruns

Bib: 27189•M

MO

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:05/mi
25:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:31
↑ 79↓ 1380.4%
15K· 9.32 mi
8:10/mi
1:15:54
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:41:20
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:46:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:07:01
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:33:46
↑ 181↓ 1480.2%
20M
8:49/mi
2:45:45
↑ 64↓ 500.2%
21M
9:03/mi
2:54:48
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
3:01:00
↑ 17↓ 861.7%
23M
8:54/mi
3:12:08
↑ 23↓ 630.6%
24M
8:42/mi
3:20:50
↓ 821.3%
40K· 24.85 mi
8:56/mi
3:28:28
↓ 200.3%
25.2M
9:31/mi
3:31:45
↑ 13↓ 160.2%
Finish· 26.22 mi
8:10/mi
3:40:04
↑ 22↓ 21

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
Time1:46:56
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:53:08
Pace8:38 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:4925:068:0525:06
8:05
-
10K
6.21 mi12:07:1450:318:0825:25
8:11
+0:06
15K
9.32 mi12:32:371:15:548:0925:23
8:10
-0:01
20K
12.43 mi12:58:031:41:208:0925:26
8:11
+0:01
Half
13.11 mi13:03:391:46:568:095:36
8:12
+0:01
25K
15.53 mi13:23:442:07:018:1120:05
8:17
+0:05
30K
18.64 mi13:50:292:33:468:1526:45
8:37
+0:20
20M
20.00 mi14:02:282:45:458:1711:59
8:49
+0:12
21M
21.00 mi14:11:312:54:488:199:03
9:03
+0:14
35K
21.75 mi14:17:433:01:008:196:12
8:17
-0:46
23M
23.00 mi14:28:513:12:088:2111:08
8:54
+0:37
24M
24.00 mi14:37:333:20:508:228:42
8:42
-0:12
40K
24.85 mi14:45:113:28:288:237:38
8:56
+0:14
25.2M
25.20 mi14:48:283:31:458:243:17
9:31
+0:35
Finish
26.22 mi14:56:473:40:048:248:19
8:10
-1:21

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

8:05 /mi

Average Pace

8:24 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:58

86% of race

Time at Steady Pace

31:06

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:24 /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 mi11:41:4925:068:0525:06
8:05
#17204
10K
6.21 mi12:07:1450:318:0825:25
8:11
#17478
15K
9.32 mi12:32:371:15:548:0925:23
8:10
#17377
20K
12.43 mi12:58:031:41:208:0925:26
8:11
#17061
Half
13.11 mi13:03:391:46:568:095:36
8:12
#17051
25K
15.53 mi13:23:442:07:018:1120:05
8:17
#16812
30K
18.64 mi13:50:292:33:468:1526:45
8:37
#16520
20M
20.00 mi14:02:282:45:458:1711:59
8:49
#16421
21M
21.00 mi14:11:312:54:488:199:03
9:03
#16221
35K
21.75 mi14:17:433:01:008:196:12
8:17
#16124
23M
23.00 mi14:28:513:12:088:2111:08
8:54
#16028
24M
24.00 mi14:37:333:20:508:228:42
8:42
#16025
40K
24.85 mi14:45:113:28:288:237:38
8:56
#15990
25.2M
25.20 mi14:48:283:31:458:243:17
9:31
#15968
Finish
26.22 mi14:56:473:40:048:248:19
8:10
#15886
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17204112921129217196(Top 61%)11299(Top 70%)11299(Top 200%)
10K6.21 mi3.10 mi17478-27411400-10811400-10817742(Top 62%)11544(Top 72%)11544(Top 205%)
15K9.32 mi3.11 mi17377+10111386+1411386+1417196(Top 61%)11299(Top 70%)11299(Top 200%)
20K12.43 mi3.11 mi17061+31611230+15611230+15616214(Top 57%)10832(Top 67%)10832(Top 192%)
Half13.11 mi0.68 mi17051+1011224+611224+617272(Top 61%)11299(Top 70%)11299(Top 200%)
25K15.53 mi2.42 mi16812+23911110+11411110+11415799(Top 56%)10562(Top 66%)10562(Top 187%)
30K18.64 mi3.11 mi16520+29210935+17510935+17515446(Top 54%)10257(Top 64%)10257(Top 182%)
20M20.00 mi1.36 mi16421+9910862+7310862+7315752(Top 55%)10258(Top 64%)10258(Top 182%)
21M21.00 mi1.00 mi16221+20010752+11010752+11013792(Top 49%)9244(Top 57%)9244(Top 164%)
35K21.75 mi0.75 mi16124+9710681+7110681+7114169(Top 50%)9366(Top 58%)9366(Top 166%)
23M23.00 mi1.25 mi16028+9610609+7210609+7215622(Top 55%)9904(Top 61%)9904(Top 176%)
24M24.00 mi1.00 mi16025+310588+2110588+2115730(Top 55%)9926(Top 62%)9926(Top 176%)
40K24.85 mi0.85 mi15990+3510549+3910549+3915882(Top 56%)9858(Top 61%)9858(Top 175%)
25.2M25.20 mi0.35 mi15968+2210526+2310526+2314662(Top 52%)9255(Top 57%)9255(Top 164%)
Finish26.22 mi1.02 mi15886+8210465+6110465+6113999(Top 49%)9019(Top 56%)9019(Top 160%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17196

Males

11299

M18-39

11299

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17742

Males

11544

M18-39

11544

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17196

Males

11299

M18-39

11299

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16214

Males

10832

M18-39

10832

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17272

Males

11299

M18-39

11299

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15799

Males

10562

M18-39

10562

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15446

Males

10257

M18-39

10257

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15752

Males

10258

M18-39

10258

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13792

Males

9244

M18-39

9244

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14169

Males

9366

M18-39

9366

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15622

Males

9904

M18-39

9904

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15730

Males

9926

M18-39

9926

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15882

Males

9858

M18-39

9858

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14662

Males

9255

M18-39

9255

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13999

Males

9019

M18-39

9019

Passing Analysis

Category:
Athletes Passed
2455
Passed By
1137
Net Change
+1318
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17204
5K → 10K187461-274#17204#17478
10K → 15K258157+101#17478#17377
15K → 20K36044+316#17377#17061
20K → Half3727+10#17061#17051
Half → 25K27233+239#17051#16812
25K → 30K37381+292#16812#16520
30K → 20M16768+99#16520#16421
20M → 21M22020+200#16421#16221
21M → 35K11619+97#16221#16124
35K → 23M15256+96#16124#16028
23M → 24M6461+3#16028#16025
24M → 40K8651+35#16025#15990
40K → 25.2M4523+22#15990#15968
25.2M → Finish11836+82#15968#15886
TOTALS24551137+1318
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing