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BOSTON MARATHON 2023

James Carson

Bib: 25143•M

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
9:03/mi
28:08
↑ 97↓ 3451.5%
10K· 6.21 mi
9:12/mi
56:42
↑ 79↓ 1380.4%
15K· 9.32 mi
9:20/mi
1:25:42
↑ 67↓ 78
20K· 12.43 mi
9:22/mi
1:54:49
↑ 106↓ 860.1%
Half· 13.11 mi
9:29/mi
2:01:17
↑ 19↓ 370.5%
25K· 15.53 mi
9:36/mi
2:24:33
↑ 66↓ 880.2%
30K· 18.64 mi
10:12/mi
2:56:13
↑ 181↓ 1480.2%
20M
9:59/mi
3:09:47
↑ 64↓ 500.2%
21M
11:04/mi
3:20:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:32/mi
3:27:59
↑ 17↓ 861.7%
23M
10:11/mi
3:40:44
↑ 23↓ 630.6%
24M
9:51/mi
3:50:35
↓ 821.3%
40K· 24.85 mi
10:06/mi
3:59:13
↓ 200.3%
25.2M
11:01/mi
4:03:01
↑ 13↓ 160.2%
Finish· 26.22 mi
9:49/mi
4:13:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:17
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:11:44
Pace10:03 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0528:089:0328:08
9:03
-
10K
6.21 mi12:12:3956:429:0728:34
9:12
+0:09
15K
9.32 mi12:41:391:25:429:1229:00
9:20
+0:08
20K
12.43 mi13:10:461:54:499:1429:07
9:22
+0:02
Half
13.11 mi13:17:142:01:179:156:28
9:29
+0:07
25K
15.53 mi13:40:302:24:339:1823:16
9:36
+0:07
30K
18.64 mi14:12:102:56:139:2731:40
10:12
+0:36
20M
20.00 mi14:25:443:09:479:2913:34
9:59
-0:13
21M
21.00 mi14:36:483:20:519:3411:04
11:04
+1:05
35K
21.75 mi14:43:563:27:599:347:08
9:32
-1:32
23M
23.00 mi14:56:413:40:449:3612:45
10:11
+0:39
24M
24.00 mi15:06:323:50:359:369:51
9:51
-0:20
40K
24.85 mi15:15:103:59:139:378:38
10:06
+0:15
25.2M
25.20 mi15:18:584:03:019:393:48
11:01
+0:55
Finish
26.22 mi15:28:584:13:019:3910:00
9:49
-1:12

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

9:03 /mi

Average Pace

9:39 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:17

48% of race

Time at Steady Pace

1:12:27

29% of race

Time at Slower Pace

59:17

23% of race

Average Pace: 9:39 /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 mi11:44:0528:089:0328:08
9:03
#20676
10K
6.21 mi12:12:3956:429:0728:34
9:12
#21148
15K
9.32 mi12:41:391:25:429:1229:00
9:20
#21342
20K
12.43 mi13:10:461:54:499:1429:07
9:22
#21306
Half
13.11 mi13:17:142:01:179:156:28
9:29
#21352
25K
15.53 mi13:40:302:24:339:1823:16
9:36
#21301
30K
18.64 mi14:12:102:56:139:2731:40
10:12
#21329
20M
20.00 mi14:25:443:09:479:2913:34
9:59
#21242
21M
21.00 mi14:36:483:20:519:3411:04
11:04
#21232
35K
21.75 mi14:43:563:27:599:347:08
9:32
#21180
23M
23.00 mi14:56:413:40:449:3612:45
10:11
#21113
24M
24.00 mi15:06:323:50:359:369:51
9:51
#21061
40K
24.85 mi15:15:103:59:139:378:38
10:06
#21029
25.2M
25.20 mi15:18:584:03:019:393:48
11:01
#21028
Finish
26.22 mi15:28:584:13:019:3910:00
9:49
#21033
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi20676124431244321743(Top 82%)13078(Top 86%)13078(Top 920%)
10K6.21 mi3.10 mi21148-47212737-29412737-29421602(Top 81%)12981(Top 86%)12981(Top 913%)
15K9.32 mi3.11 mi21342-19412852-11512852-11521743(Top 82%)13078(Top 86%)13078(Top 920%)
20K12.43 mi3.11 mi21306+36128521285221157(Top 79%)12816(Top 84%)12816(Top 901%)
Half13.11 mi0.68 mi21352-4612867-1512867-1522031(Top 83%)13201(Top 87%)13201(Top 928%)
25K15.53 mi2.42 mi21301+5112848+1912848+1921120(Top 79%)12763(Top 84%)12763(Top 898%)
30K18.64 mi3.11 mi21329-2812843+512843+521507(Top 81%)12847(Top 85%)12847(Top 903%)
20M20.00 mi1.36 mi21242+8712779+6412779+6420433(Top 77%)12316(Top 81%)12316(Top 866%)
21M21.00 mi1.00 mi21232+1012769+1012769+1020958(Top 79%)12501(Top 82%)12501(Top 879%)
35K21.75 mi0.75 mi21180+5212735+3412735+3419948(Top 75%)12029(Top 79%)12029(Top 846%)
23M23.00 mi1.25 mi21113+6712696+3912696+3920512(Top 77%)12253(Top 81%)12253(Top 862%)
24M24.00 mi1.00 mi21061+5212661+3512661+3520372(Top 77%)12161(Top 80%)12161(Top 855%)
40K24.85 mi0.85 mi21029+3212633+2812633+2820228(Top 76%)12028(Top 79%)12028(Top 846%)
25.2M25.20 mi0.35 mi21028+112626+712626+720492(Top 77%)12159(Top 80%)12159(Top 855%)
Finish26.22 mi1.02 mi21033-512623+312623+321189(Top 80%)12512(Top 82%)12512(Top 880%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21743

Males

13078

M55-59

13078

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

21602

Males

12981

M55-59

12981

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21743

Males

13078

M55-59

13078

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

21157

Males

12816

M55-59

12816

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22031

Males

13201

M55-59

13201

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

21120

Males

12763

M55-59

12763

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

21507

Males

12847

M55-59

12847

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20433

Males

12316

M55-59

12316

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

20958

Males

12501

M55-59

12501

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

19948

Males

12029

M55-59

12029

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

20512

Males

12253

M55-59

12253

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20372

Males

12161

M55-59

12161

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20228

Males

12028

M55-59

12028

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20492

Males

12159

M55-59

12159

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

21189

Males

12512

M55-59

12512

Passing Analysis

Category:
Athletes Passed
1145
Passed By
1502
Net Change
-357
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20676
5K → 10K121593-472#20676#21148
10K → 15K87281-194#21148#21342
15K → 20K163127+36#21342#21306
20K → Half1157-46#21306#21352
Half → 25K12675+51#21352#21301
25K → 30K111139-28#21301#21329
30K → 20M11831+87#21329#21242
20M → 21M6858+10#21242#21232
21M → 35K6210+52#21232#21180
35K → 23M9225+67#21180#21113
23M → 24M6816+52#21113#21061
24M → 40K5624+32#21061#21029
40K → 25.2M2221+1#21029#21028
25.2M → Finish4045-5#21028#21033
TOTALS11451502-357
📊

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