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BOSTON MARATHON 2023

Nathan Felt

Bib: 14414•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 28%
Gender (Male)
#0 / 15176
Top 43%
Masters (Masters Men)
#0 / 9891
Top 30%
Division (M50-54)
#0 / 2052
Top 25%
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
7:42/mi
23:56
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
47:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:10:01
↑ 67↓ 78
20K· 12.43 mi
7:20/mi
1:32:48
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:37:45
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:55:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:22/mi
2:18:27
↑ 181↓ 1480.2%
20M
7:24/mi
2:28:30
↑ 64↓ 500.2%
21M
7:44/mi
2:36:14
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:41:28
↑ 17↓ 861.7%
23M
7:25/mi
2:50:45
↑ 23↓ 630.6%
24M
7:22/mi
2:58:07
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:04:31
↓ 200.3%
25.2M
7:50/mi
3:07:13
↑ 13↓ 160.2%
Finish· 26.22 mi
7:07/mi
3:14:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:45
Pace7:27 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:43
Pace7:23 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2223:567:4223:56
7:42
-
10K
6.21 mi11:16:3247:067:3523:10
7:27
-0:15
15K
9.32 mi11:39:271:10:017:3122:55
7:23
-0:04
20K
12.43 mi12:02:141:32:487:2822:47
7:20
-0:03
Half
13.11 mi12:07:111:37:457:274:57
7:15
-0:05
25K
15.53 mi12:24:591:55:337:2617:48
7:20
+0:05
30K
18.64 mi12:47:532:18:277:2622:54
7:22
+0:02
20M
20.00 mi12:57:562:28:307:2510:03
7:24
+0:02
21M
21.00 mi13:05:402:36:147:267:44
7:44
+0:20
35K
21.75 mi13:10:542:41:287:255:14
7:00
-0:44
23M
23.00 mi13:20:112:50:457:259:17
7:25
+0:25
24M
24.00 mi13:27:332:58:077:257:22
7:22
-0:03
40K
24.85 mi13:33:573:04:317:256:24
7:29
+0:07
25.2M
25.20 mi13:36:393:07:137:262:42
7:50
+0:21
Finish
26.22 mi13:43:543:14:287:257:15
7:07
-0:43

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

7:00 /mi

Average Pace

7:25 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:06

82% of race

Time at Steady Pace

34:22

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:25 /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 mi10:53:2223:567:4223:56
7:42
#11455
10K
6.21 mi11:16:3247:067:3523:10
7:27
#10725
15K
9.32 mi11:39:271:10:017:3122:55
7:23
#10162
20K
12.43 mi12:02:141:32:487:2822:47
7:20
#9546
Half
13.11 mi12:07:111:37:457:274:57
7:15
#9473
25K
15.53 mi12:24:591:55:337:2617:48
7:20
#9130
30K
18.64 mi12:47:532:18:277:2622:54
7:22
#8582
20M
20.00 mi12:57:562:28:307:2510:03
7:24
#8352
21M
21.00 mi13:05:402:36:147:267:44
7:44
#8188
35K
21.75 mi13:10:542:41:287:255:14
7:00
#8046
23M
23.00 mi13:20:112:50:457:259:17
7:25
#7878
24M
24.00 mi13:27:332:58:077:257:22
7:22
#7801
40K
24.85 mi13:33:573:04:317:256:24
7:29
#7735
25.2M
25.20 mi13:36:393:07:137:262:42
7:50
#7681
Finish
26.22 mi13:43:543:14:287:257:15
7:07
#7579
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi11455886788679124(Top 34%)7614(Top 50%)7614(Top 371%)
10K6.21 mi3.10 mi10725+7308517+3508517+35010100(Top 38%)8216(Top 54%)8216(Top 400%)
15K9.32 mi3.11 mi10162+5638257+2608257+2609124(Top 34%)7614(Top 50%)7614(Top 371%)
20K12.43 mi3.11 mi9546+6167884+3737884+3738029(Top 30%)6904(Top 45%)6904(Top 336%)
Half13.11 mi0.68 mi9473+737840+447840+448203(Top 31%)7017(Top 46%)7017(Top 342%)
25K15.53 mi2.42 mi9130+3437626+2147626+2147546(Top 28%)6508(Top 43%)6508(Top 317%)
30K18.64 mi3.11 mi8582+5487243+3837243+3836429(Top 24%)5682(Top 37%)5682(Top 277%)
20M20.00 mi1.36 mi8352+2307068+1757068+1756169(Top 23%)5421(Top 36%)5421(Top 264%)
21M21.00 mi1.00 mi8188+1646954+1146954+1145811(Top 22%)5063(Top 33%)5063(Top 247%)
35K21.75 mi0.75 mi8046+1426854+1006854+1005341(Top 20%)4769(Top 31%)4769(Top 232%)
23M23.00 mi1.25 mi7878+1686730+1246730+1245952(Top 22%)5159(Top 34%)5159(Top 251%)
24M24.00 mi1.00 mi7801+776658+726658+726823(Top 26%)5612(Top 37%)5612(Top 273%)
40K24.85 mi0.85 mi7735+666602+566602+566622(Top 25%)5410(Top 36%)5410(Top 264%)
25.2M25.20 mi0.35 mi7681+546558+446558+445551(Top 21%)4650(Top 31%)4650(Top 227%)
Finish26.22 mi1.02 mi7579+1026471+876471+875900(Top 22%)4866(Top 32%)4866(Top 237%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9124

Males

7614

M50-54

7614

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10100

Males

8216

M50-54

8216

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9124

Males

7614

M50-54

7614

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8029

Males

6904

M50-54

6904

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8203

Males

7017

M50-54

7017

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7546

Males

6508

M50-54

6508

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6429

Males

5682

M50-54

5682

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6169

Males

5421

M50-54

5421

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

5811

Males

5063

M50-54

5063

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5341

Males

4769

M50-54

4769

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

5952

Males

5159

M50-54

5159

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6823

Males

5612

M50-54

5612

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6622

Males

5410

M50-54

5410

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5551

Males

4650

M50-54

4650

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5900

Males

4866

M50-54

4866

Passing Analysis

Category:
Athletes Passed
4113*
Passed By
237
Net Change
+3876
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11455
5K → 10K80373+730#11455#10725
10K → 15K59431+563#10725#10162
15K → 20K619*3+616#10162#9546
20K → Half785+73#9546#9473
Half → 25K3474+343#9473#9130
25K → 30K5535+548#9130#8582
30K → 20M24212+230#8582#8352
20M → 21M17612+164#8352#8188
21M → 35K1442+142#8188#8046
35K → 23M18113+168#8046#7878
23M → 24M10427+77#7878#7801
24M → 40K9125+66#7801#7735
40K → 25.2M606+54#7735#7681
25.2M → Finish12119+102#7681#7579
TOTALS4113*237+3876

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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