Boston Marathon logo
BOSTON MARATHON 2023

Alfie Rudnick

Bib: 26368•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
10:42/mi
33:15
↑ 97↓ 3451.5%
10K· 6.21 mi
10:44/mi
1:06:35
↑ 79↓ 1380.4%
15K· 9.32 mi
10:44/mi
1:39:56
↑ 67↓ 78
20K· 12.43 mi
11:13/mi
2:14:47
↑ 106↓ 860.1%
Half· 13.11 mi
10:58/mi
2:22:16
↑ 19↓ 370.5%
25K· 15.53 mi
12:14/mi
2:51:56
↑ 66↓ 880.2%
30K· 18.64 mi
13:31/mi
3:33:55
↑ 181↓ 1480.2%
20M
12:21/mi
3:50:42
↑ 64↓ 500.2%
21M
15:43/mi
4:06:25
↑ 106↓ 241.6%
35K· 21.75 mi
11:52/mi
4:15:18
↑ 17↓ 861.7%
23M
13:39/mi
4:32:24
↑ 23↓ 630.6%
24M
12:26/mi
4:44:50
↓ 821.3%
40K· 24.85 mi
14:24/mi
4:57:09
↓ 200.3%
25.2M
14:15/mi
5:02:04
↑ 13↓ 160.2%
Finish· 26.22 mi
12:15/mi
5:14:33
↑ 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
Time2:22:16
Pace10:51 /mi
2nd Half
Distance13.11 mi
Time2:52:17
Pace13:09 /mi
📊Positive Split: 21.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:4933:1510:4233:15
10:42
-
10K
6.21 mi12:22:091:06:3510:4333:20
10:44
+0:02
15K
9.32 mi12:55:301:39:5610:4333:21
10:44
0:00
20K
12.43 mi13:30:212:14:4710:5134:51
11:13
+0:29
Half
13.11 mi13:37:502:22:1610:517:29
10:58
-0:15
25K
15.53 mi14:07:302:51:5611:0429:40
12:14
+1:16
30K
18.64 mi14:49:293:33:5511:2941:59
13:31
+1:17
20M
20.00 mi15:06:163:50:4211:3216:47
12:21
-1:10
21M
21.00 mi15:21:594:06:2511:4415:43
15:43
+3:22
35K
21.75 mi15:30:524:15:1811:448:53
11:52
-3:51
23M
23.00 mi15:47:584:32:2411:5117:06
13:39
+1:47
24M
24.00 mi16:00:244:44:5011:5212:26
12:26
-1:13
40K
24.85 mi16:12:434:57:0911:5712:19
14:24
+1:58
25.2M
25.20 mi16:17:385:02:0411:594:55
14:15
-0:09
Finish
26.22 mi16:30:075:14:3312:0012:29
12:15
-2:00

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

10:42 /mi

Average Pace

12:00 /mi

Slowest Pace

15:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:16

45% of race

Time at Steady Pace

1:20:15

26% of race

Time at Slower Pace

1:32:02

29% of race

Average Pace: 12:00 /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 mi11:48:4933:1510:4233:15
10:42
#25185
10K
6.21 mi12:22:091:06:3510:4333:20
10:44
#25116
15K
9.32 mi12:55:301:39:5610:4333:21
10:44
#25019
20K
12.43 mi13:30:212:14:4710:5134:51
11:13
#24982
Half
13.11 mi13:37:502:22:1610:517:29
10:58
#24982
25K
15.53 mi14:07:302:51:5611:0429:40
12:14
#25101
30K
18.64 mi14:49:293:33:5511:2941:59
13:31
#25290
20M
20.00 mi15:06:163:50:4211:3216:47
12:21
#25259
21M
21.00 mi15:21:594:06:2511:4415:43
15:43
#25350
35K
21.75 mi15:30:524:15:1811:448:53
11:52
#25320
23M
23.00 mi15:47:584:32:2411:5117:06
13:39
#25366
24M
24.00 mi16:00:244:44:5011:5212:26
12:26
#25356
40K
24.85 mi16:12:434:57:0911:5712:19
14:24
#25396
25.2M
25.20 mi16:17:385:02:0411:594:55
14:15
#25394
Finish
26.22 mi16:30:075:14:3312:0012:29
12:15
#25407
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25185146251462524848(Top 93%)14446(Top 95%)14446(Top 273%)
10K6.21 mi3.10 mi25116+6914594+3114594+3125054(Top 94%)14561(Top 96%)14561(Top 276%)
15K9.32 mi3.11 mi25019+9714551+4314551+4324848(Top 93%)14446(Top 95%)14446(Top 273%)
20K12.43 mi3.11 mi24982+3714517+3414517+3424902(Top 94%)14459(Top 95%)14459(Top 274%)
Half13.11 mi0.68 mi2498214513+414513+424899(Top 94%)14437(Top 95%)14437(Top 273%)
25K15.53 mi2.42 mi25101-11914557-4414557-4425341(Top 95%)14617(Top 96%)14617(Top 277%)
30K18.64 mi3.11 mi25290-18914614-5714614-5725751(Top 97%)14753(Top 97%)14753(Top 279%)
20M20.00 mi1.36 mi25259+3114598+1614598+1624590(Top 92%)14182(Top 93%)14182(Top 268%)
21M21.00 mi1.00 mi25350-9114625-2714625-2726111(Top 98%)14911(Top 98%)14911(Top 282%)
35K21.75 mi0.75 mi25320+3014605+2014605+2024548(Top 92%)14102(Top 93%)14102(Top 267%)
23M23.00 mi1.25 mi25366-4614626-2114626-2125609(Top 96%)14627(Top 96%)14627(Top 277%)
24M24.00 mi1.00 mi25356+1014614+1214614+1224992(Top 94%)14296(Top 94%)14296(Top 271%)
40K24.85 mi0.85 mi25396-4014634-2014634-2025907(Top 97%)14753(Top 97%)14753(Top 279%)
25.2M25.20 mi0.35 mi25394+214629+514629+525195(Top 95%)14387(Top 95%)14387(Top 272%)
Finish26.22 mi1.02 mi25407-1314631-214631-225465(Top 96%)14548(Top 96%)14548(Top 275%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

24848

Males

14446

M18-39

14446

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

25054

Males

14561

M18-39

14561

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

24848

Males

14446

M18-39

14446

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

24902

Males

14459

M18-39

14459

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

24899

Males

14437

M18-39

14437

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

25341

Males

14617

M18-39

14617

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25751

Males

14753

M18-39

14753

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

24590

Males

14182

M18-39

14182

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

26111

Males

14911

M18-39

14911

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

24548

Males

14102

M18-39

14102

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25609

Males

14627

M18-39

14627

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

24992

Males

14296

M18-39

14296

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25907

Males

14753

M18-39

14753

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25195

Males

14387

M18-39

14387

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

25465

Males

14548

M18-39

14548

Passing Analysis

Category:
Athletes Passed
733
Passed By
955
Net Change
-222
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25185
5K → 10K208139+69#25185#25116
10K → 15K16568+97#25116#25019
15K → 20K11982+37#25019#24982
20K → Half20200#24982#24982
Half → 25K36155-119#24982#25101
25K → 30K27216-189#25101#25290
30K → 20M4413+31#25290#25259
20M → 21M899-91#25259#25350
21M → 35K366+30#25350#25320
35K → 23M1460-46#25320#25366
23M → 24M2919+10#25366#25356
24M → 40K747-40#25356#25396
40K → 25.2M75+2#25396#25394
25.2M → Finish1326-13#25394#25407
TOTALS733955-222
📊

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