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BOSTON MARATHON 2023

Ian Golden

Bib: 10518•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 45%
Masters (Masters Men)
#0 / 9891
Top 32%
Division (M45-49)
#0 / 2252
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:08/mi
22:09
↑ 97↓ 3451.5%
10K· 6.21 mi
7:01/mi
43:57
↑ 79↓ 1380.4%
15K· 9.32 mi
6:59/mi
1:05:38
↑ 67↓ 78
20K· 12.43 mi
7:04/mi
1:27:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:04/mi
1:32:24
↑ 19↓ 370.5%
25K· 15.53 mi
7:18/mi
1:50:05
↑ 66↓ 880.2%
30K· 18.64 mi
7:44/mi
2:14:08
↑ 181↓ 1480.2%
20M
8:09/mi
2:25:13
↑ 64↓ 500.2%
21M
8:35/mi
2:33:48
↑ 106↓ 241.6%
35K· 21.75 mi
7:49/mi
2:39:39
↑ 17↓ 861.7%
23M
8:15/mi
2:49:59
↑ 23↓ 630.6%
24M
8:10/mi
2:58:09
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:05:12
↓ 200.3%
25.2M
8:51/mi
3:08:15
↑ 13↓ 160.2%
Finish· 26.22 mi
7:43/mi
3:16:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:24
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:43:43
Pace7:55 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3222:097:0822:09
7:08
-
10K
6.21 mi11:10:2043:577:0421:48
7:01
-0:07
15K
9.32 mi11:32:011:05:387:0321:41
6:59
-0:02
20K
12.43 mi11:53:581:27:357:0321:57
7:04
+0:05
Half
13.11 mi11:58:471:32:247:034:49
7:04
0:00
25K
15.53 mi12:16:281:50:057:0517:41
7:18
+0:14
30K
18.64 mi12:40:312:14:087:1224:03
7:44
+0:26
20M
20.00 mi12:51:362:25:137:1611:05
8:09
+0:25
21M
21.00 mi13:00:112:33:487:198:35
8:35
+0:26
35K
21.75 mi13:06:022:39:397:205:51
7:49
-0:46
23M
23.00 mi13:16:222:49:597:2310:20
8:15
+0:26
24M
24.00 mi13:24:322:58:097:258:10
8:10
-0:05
40K
24.85 mi13:31:353:05:127:277:03
8:15
+0:05
25.2M
25.20 mi13:34:383:08:157:283:03
8:51
+0:36
Finish
26.22 mi13:42:303:16:077:297:52
7:43
-1:08

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

6:59 /mi

Average Pace

7:29 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:05

56% of race

Time at Steady Pace

37:46

19% of race

Time at Slower Pace

48:16

25% of race

Average Pace: 7:29 /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 mi10:48:3222:097:0822:09
7:08
#7062
10K
6.21 mi11:10:2043:577:0421:48
7:01
#6937
15K
9.32 mi11:32:011:05:387:0321:41
6:59
#6739
20K
12.43 mi11:53:581:27:357:0321:57
7:04
#6626
Half
13.11 mi11:58:471:32:247:034:49
7:04
#6636
25K
15.53 mi12:16:281:50:057:0517:41
7:18
#6709
30K
18.64 mi12:40:312:14:087:1224:03
7:44
#6972
20M
20.00 mi12:51:362:25:137:1611:05
8:09
#7189
21M
21.00 mi13:00:112:33:487:198:35
8:35
#7355
35K
21.75 mi13:06:022:39:397:205:51
7:49
#7449
23M
23.00 mi13:16:222:49:597:2310:20
8:15
#7620
24M
24.00 mi13:24:322:58:097:258:10
8:10
#7811
40K
24.85 mi13:31:353:05:127:277:03
8:15
#7930
25.2M
25.20 mi13:34:383:08:157:283:03
8:51
#7977
Finish
26.22 mi13:42:303:16:077:297:52
7:43
#8055
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7062631663166435(Top 24%)5804(Top 38%)5804(Top 258%)
10K6.21 mi3.10 mi6937+1256217+996217+996944(Top 26%)6200(Top 41%)6200(Top 275%)
15K9.32 mi3.11 mi6739+1986062+1556062+1556435(Top 24%)5804(Top 38%)5804(Top 258%)
20K12.43 mi3.11 mi6626+1135955+1075955+1076372(Top 24%)5754(Top 38%)5754(Top 256%)
Half13.11 mi0.68 mi6636-105961-65961-66928(Top 26%)6185(Top 41%)6185(Top 275%)
25K15.53 mi2.42 mi6709-736016-556016-557250(Top 27%)6322(Top 42%)6322(Top 281%)
30K18.64 mi3.11 mi6972-2636190-1746190-1748927(Top 34%)7237(Top 48%)7237(Top 321%)
20M20.00 mi1.36 mi7189-2176336-1466336-14611353(Top 43%)8415(Top 55%)8415(Top 374%)
21M21.00 mi1.00 mi7355-1666424-886424-8810935(Top 41%)8080(Top 53%)8080(Top 359%)
35K21.75 mi0.75 mi7449-946467-436467-4310742(Top 40%)7965(Top 52%)7965(Top 354%)
23M23.00 mi1.25 mi7620-1716571-1046571-10411518(Top 43%)8233(Top 54%)8233(Top 366%)
24M24.00 mi1.00 mi7811-1916665-946665-9412325(Top 46%)8536(Top 56%)8536(Top 379%)
40K24.85 mi0.85 mi7930-1196724-596724-5911622(Top 44%)8124(Top 54%)8124(Top 361%)
25.2M25.20 mi0.35 mi7977-476741-176741-1711488(Top 43%)8002(Top 53%)8002(Top 355%)
Finish26.22 mi1.02 mi8055-786771-306771-3010061(Top 38%)7315(Top 48%)7315(Top 325%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6435

Males

5804

M45-49

5804

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

6944

Males

6200

M45-49

6200

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6435

Males

5804

M45-49

5804

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6372

Males

5754

M45-49

5754

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

6928

Males

6185

M45-49

6185

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7250

Males

6322

M45-49

6322

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

8927

Males

7237

M45-49

7237

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11353

Males

8415

M45-49

8415

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10935

Males

8080

M45-49

8080

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10742

Males

7965

M45-49

7965

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11518

Males

8233

M45-49

8233

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12325

Males

8536

M45-49

8536

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11622

Males

8124

M45-49

8124

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11488

Males

8002

M45-49

8002

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10061

Males

7315

M45-49

7315

Passing Analysis

Category:
Athletes Passed
1014
Passed By
2007
Net Change
-993
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7062
5K → 10K265140+125#7062#6937
10K → 15K24648+198#6937#6739
15K → 20K16956+113#6739#6626
20K → Half919-10#6626#6636
Half → 25K63136-73#6636#6709
25K → 30K46309-263#6709#6972
30K → 20M17234-217#6972#7189
20M → 21M21187-166#7189#7355
21M → 35K24118-94#7355#7449
35K → 23M35206-171#7449#7620
23M → 24M32223-191#7620#7811
24M → 40K29148-119#7811#7930
40K → 25.2M1663-47#7930#7977
25.2M → Finish42120-78#7977#8055
TOTALS10142007-993
📊

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