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BOSTON MARATHON 2025

Gwang Jae Go

Bib: 30369•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
9:20/mi
29:00
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
57:02
↑ 79↓ 1380.4%
15K· 9.32 mi
10:01/mi
1:28:08
↑ 67↓ 78
20K· 12.43 mi
10:26/mi
2:00:34
↑ 106↓ 860.1%
Half· 13.11 mi
10:29/mi
2:07:43
↑ 19↓ 370.5%
25K· 15.53 mi
12:57/mi
2:39:08
↑ 66↓ 880.2%
30K· 18.64 mi
14:02/mi
3:22:45
↑ 181↓ 1480.2%
20M
14:10/mi
3:42:00
↑ 64↓ 500.2%
21M
14:58/mi
3:56:58
↑ 106↓ 241.6%
35K· 21.75 mi
11:08/mi
4:05:18
↑ 17↓ 861.7%
23M
10:47/mi
4:18:48
↑ 23↓ 630.6%
24M
12:15/mi
4:31:03
↓ 821.3%
40K· 24.85 mi
13:08/mi
4:42:17
↓ 200.3%
25.2M
13:32/mi
4:46:57
↑ 13↓ 160.2%
Finish· 26.22 mi
10:50/mi
4:57:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:43
Pace9:45 /mi
2nd Half
Distance13.11 mi
Time2:50:16
Pace12:59 /mi
📊Positive Split: 33.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2129:009:2029:00
9:20
-
10K
6.21 mi12:17:2357:029:1128:02
9:01
-0:19
15K
9.32 mi12:48:291:28:089:2731:06
10:01
+1:00
20K
12.43 mi13:20:552:00:349:4232:26
10:26
+0:25
Half
13.11 mi13:28:042:07:439:457:09
10:29
+0:03
25K
15.53 mi13:59:292:39:0810:1531:25
12:57
+2:28
30K
18.64 mi14:43:063:22:4510:5343:37
14:02
+1:05
20M
20.00 mi15:02:213:42:0011:0619:15
14:10
+0:08
21M
21.00 mi15:17:193:56:5811:1714:58
14:58
+0:48
35K
21.75 mi15:25:394:05:1811:178:20
11:08
-3:50
23M
23.00 mi15:39:094:18:4811:1513:30
10:47
-0:21
24M
24.00 mi15:51:244:31:0311:1812:15
12:15
+1:28
40K
24.85 mi16:02:384:42:1711:2111:14
13:08
+0:53
25.2M
25.20 mi16:07:184:46:5711:234:40
13:32
+0:24
Finish
26.22 mi16:18:204:57:5911:2211:02
10:50
-2:42

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

9:01 /mi

Average Pace

11:22 /mi

Slowest Pace

14:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:08

30% of race

Time at Steady Pace

1:12:27

24% of race

Time at Slower Pace

2:17:24

46% of race

Average Pace: 11:22 /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 mi11:49:2129:009:2029:00
9:20
#23667
10K
6.21 mi12:17:2357:029:1128:02
9:01
#23133
15K
9.32 mi12:48:291:28:089:2731:06
10:01
#23917
20K
12.43 mi13:20:552:00:349:4232:26
10:26
#24304
Half
13.11 mi13:28:042:07:439:457:09
10:29
#24382
25K
15.53 mi13:59:292:39:0810:1531:25
12:57
#25213
30K
18.64 mi14:43:063:22:4510:5343:37
14:02
#25867
20M
20.00 mi15:02:213:42:0011:0619:15
14:10
#26074
21M
21.00 mi15:17:193:56:5811:1714:58
14:58
#26172
35K
21.75 mi15:25:394:05:1811:178:20
11:08
#26115
23M
23.00 mi15:39:094:18:4811:1513:30
10:47
#25970
24M
24.00 mi15:51:244:31:0311:1812:15
12:15
#25997
40K
24.85 mi16:02:384:42:1711:2111:14
13:08
#26034
25.2M
25.20 mi16:07:184:46:5711:234:40
13:32
#26044
Finish
26.22 mi16:18:204:57:5911:2211:02
10:50
#26025
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi23667140921409225009(Top 88%)14730(Top 91%)14730(Top 894%)
10K6.21 mi3.10 mi23133+53413850+24213850+24222480(Top 79%)13570(Top 84%)13570(Top 823%)
15K9.32 mi3.11 mi23917-78414227-37714227-37725009(Top 88%)14730(Top 91%)14730(Top 894%)
20K12.43 mi3.11 mi24304-38714375-14814375-14825088(Top 88%)14715(Top 91%)14715(Top 893%)
Half13.11 mi0.68 mi24382-7814411-3614411-3625768(Top 91%)15003(Top 93%)15003(Top 910%)
25K15.53 mi2.42 mi25213-83114780-36914780-36927264(Top 96%)15618(Top 97%)15618(Top 948%)
30K18.64 mi3.11 mi25867-65415051-27115051-27127539(Top 97%)15669(Top 97%)15669(Top 951%)
20M20.00 mi1.36 mi26074-20715130-7915130-7927401(Top 96%)15570(Top 97%)15570(Top 945%)
21M21.00 mi1.00 mi26172-9815160-3015160-3027124(Top 95%)15426(Top 96%)15426(Top 936%)
35K21.75 mi0.75 mi26115+5715132+2815132+2824500(Top 86%)14111(Top 88%)14111(Top 856%)
23M23.00 mi1.25 mi25970+14515058+7415058+7422709(Top 80%)13208(Top 82%)13208(Top 801%)
24M24.00 mi1.00 mi25997-2715064-615064-625987(Top 91%)14795(Top 92%)14795(Top 898%)
40K24.85 mi0.85 mi26034-3715075-1115075-1126429(Top 93%)15017(Top 93%)15017(Top 911%)
25.2M25.20 mi0.35 mi26044-1015074+115074+125723(Top 91%)14605(Top 91%)14605(Top 886%)
Finish26.22 mi1.02 mi26025+1915052+2215052+2225019(Top 88%)14290(Top 89%)14290(Top 867%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

25009

Males

14730

M55-59

14730

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

22480

Males

13570

M55-59

13570

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

25009

Males

14730

M55-59

14730

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

25088

Males

14715

M55-59

14715

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

25768

Males

15003

M55-59

15003

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

27264

Males

15618

M55-59

15618

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

27539

Males

15669

M55-59

15669

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27401

Males

15570

M55-59

15570

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

27124

Males

15426

M55-59

15426

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

24500

Males

14111

M55-59

14111

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22709

Males

13208

M55-59

13208

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

25987

Males

14795

M55-59

14795

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26429

Males

15017

M55-59

15017

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25723

Males

14605

M55-59

14605

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

25019

Males

14290

M55-59

14290

Passing Analysis

Category:
Athletes Passed
1008
Passed By
3366
Net Change
-2358
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23667
5K → 10K59460+534#23667#23133
10K → 15K32816-784#23133#23917
15K → 20K45432-387#23917#24304
20K → Half684-78#24304#24382
Half → 25K5836-831#24382#25213
25K → 30K13667-654#25213#25867
30K → 20M15222-207#25867#26074
20M → 21M15113-98#26074#26172
21M → 35K658+57#26172#26115
35K → 23M1461+145#26115#25970
23M → 24M1946-27#25970#25997
24M → 40K1552-37#25997#26034
40K → 25.2M414-10#26034#26044
25.2M → Finish3415+19#26044#26025
TOTALS10083366-2358
📊

Passing Visuals

Category:
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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