Boston Marathon logo
BOSTON MARATHON 2025

Colin Glacken

Bib: 17361•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 50%
Division (M55-59)
#0 / 1648
Top 38%
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
7:50/mi
24:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
48:39
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:13:13
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:37:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:43:15
↑ 19↓ 370.5%
25K· 15.53 mi
8:02/mi
2:02:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:20/mi
2:28:37
↑ 181↓ 1480.2%
20M
8:20/mi
2:39:56
↑ 64↓ 500.2%
21M
8:47/mi
2:48:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:54:25
↑ 17↓ 861.7%
23M
8:02/mi
3:04:28
↑ 23↓ 630.6%
24M
7:49/mi
3:12:17
↓ 821.3%
40K· 24.85 mi
8:04/mi
3:19:11
↓ 200.3%
25.2M
8:51/mi
3:22:14
↑ 13↓ 160.2%
Finish· 26.22 mi
8:09/mi
3:30:32
↑ 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
Time1:43:15
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:47:17
Pace8:11 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4724:207:5024:20
7:50
-
10K
6.21 mi11:39:0648:397:5024:19
7:50
0:00
15K
9.32 mi12:03:401:13:137:5124:34
7:54
+0:04
20K
12.43 mi12:28:201:37:537:5324:40
7:56
+0:02
Half
13.11 mi12:33:421:43:157:535:22
7:52
-0:04
25K
15.53 mi12:53:102:02:437:5419:28
8:02
+0:10
30K
18.64 mi13:19:042:28:377:5825:54
8:20
+0:18
20M
20.00 mi13:30:232:39:568:0011:19
8:20
0:00
21M
21.00 mi13:39:102:48:438:028:47
8:47
+0:27
35K
21.75 mi13:44:522:54:258:015:42
7:37
-1:10
23M
23.00 mi13:54:553:04:288:0110:03
8:02
+0:25
24M
24.00 mi14:02:443:12:178:017:49
7:49
-0:13
40K
24.85 mi14:09:383:19:118:016:54
8:04
+0:15
25.2M
25.20 mi14:12:413:22:148:023:03
8:51
+0:47
Finish
26.22 mi14:20:593:30:328:028:18
8:09
-0:42

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

7:37 /mi

Average Pace

8:02 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:42

94% of race

Time at Steady Pace

11:50

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:02 /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 mi11:14:4724:207:5024:20
7:50
#15084
10K
6.21 mi11:39:0648:397:5024:19
7:50
#15039
15K
9.32 mi12:03:401:13:137:5124:34
7:54
#15126
20K
12.43 mi12:28:201:37:537:5324:40
7:56
#14886
Half
13.11 mi12:33:421:43:157:535:22
7:52
#14884
25K
15.53 mi12:53:102:02:437:5419:28
8:02
#14708
30K
18.64 mi13:19:042:28:377:5825:54
8:20
#14457
20M
20.00 mi13:30:232:39:568:0011:19
8:20
#14289
21M
21.00 mi13:39:102:48:438:028:47
8:47
#14124
35K
21.75 mi13:44:522:54:258:015:42
7:37
#13923
23M
23.00 mi13:54:553:04:288:0110:03
8:02
#13662
24M
24.00 mi14:02:443:12:178:017:49
7:49
#13482
40K
24.85 mi14:09:383:19:118:016:54
8:04
#13357
25.2M
25.20 mi14:12:413:22:148:023:03
8:51
#13309
Finish
26.22 mi14:20:593:30:328:028:18
8:09
#13345
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15084104541045415277(Top 54%)10491(Top 65%)10491(Top 637%)
10K6.21 mi3.10 mi15039+4510424+3010424+3015044(Top 53%)10435(Top 65%)10435(Top 633%)
15K9.32 mi3.11 mi15126-8710449-2510449-2515277(Top 54%)10491(Top 65%)10491(Top 637%)
20K12.43 mi3.11 mi14886+24010318+13110318+13114429(Top 51%)10054(Top 62%)10054(Top 610%)
Half13.11 mi0.68 mi14884+210309+910309+914744(Top 52%)10219(Top 63%)10219(Top 620%)
25K15.53 mi2.42 mi14708+17610212+9710212+9714104(Top 50%)9809(Top 61%)9809(Top 595%)
30K18.64 mi3.11 mi14457+25110048+16410048+16413717(Top 48%)9471(Top 59%)9471(Top 575%)
20M20.00 mi1.36 mi14289+1689949+999949+9912658(Top 45%)8846(Top 55%)8846(Top 537%)
21M21.00 mi1.00 mi14124+1659848+1019848+10112181(Top 43%)8457(Top 53%)8457(Top 513%)
35K21.75 mi0.75 mi13923+2019738+1109738+1109469(Top 33%)7112(Top 44%)7112(Top 432%)
23M23.00 mi1.25 mi13662+2619578+1609578+16010219(Top 36%)7352(Top 46%)7352(Top 446%)
24M24.00 mi1.00 mi13482+1809478+1009478+1009925(Top 35%)7134(Top 44%)7134(Top 433%)
40K24.85 mi0.85 mi13357+1259396+829396+8210667(Top 38%)7395(Top 46%)7395(Top 449%)
25.2M25.20 mi0.35 mi13309+489359+379359+3710889(Top 38%)7442(Top 46%)7442(Top 452%)
Finish26.22 mi1.02 mi13345-369360-19360-113883(Top 49%)8952(Top 56%)8952(Top 543%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15277

Males

10491

M55-59

10491

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

15044

Males

10435

M55-59

10435

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15277

Males

10491

M55-59

10491

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14429

Males

10054

M55-59

10054

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14744

Males

10219

M55-59

10219

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14104

Males

9809

M55-59

9809

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13717

Males

9471

M55-59

9471

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12658

Males

8846

M55-59

8846

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12181

Males

8457

M55-59

8457

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9469

Males

7112

M55-59

7112

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10219

Males

7352

M55-59

7352

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9925

Males

7134

M55-59

7134

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10667

Males

7395

M55-59

7395

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10889

Males

7442

M55-59

7442

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13883

Males

8952

M55-59

8952

Passing Analysis

Category:
Athletes Passed
2788
Passed By
1049
Net Change
+1739
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15084
5K → 10K308263+45#15084#15039
10K → 15K180267-87#15039#15126
15K → 20K32585+240#15126#14886
20K → Half3432+2#14886#14884
Half → 25K25579+176#14884#14708
25K → 30K360109+251#14708#14457
30K → 20M20739+168#14457#14289
20M → 21M20540+165#14289#14124
21M → 35K2043+201#14124#13923
35K → 23M27110+261#13923#13662
23M → 24M19010+180#13662#13482
24M → 40K13813+125#13482#13357
40K → 25.2M6416+48#13357#13309
25.2M → Finish4783-36#13309#13345
TOTALS27881049+1739
📊

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