Boston Marathon logo
BOSTON MARATHON 2023

Peter Littlefield

Bib: 1511•M

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 6%
Division (M18-39)
#0 / 5285
Top 15%
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
6:00/mi
18:37
↑ 97↓ 3451.5%
10K· 6.21 mi
6:05/mi
37:30
↑ 79↓ 1380.4%
15K· 9.32 mi
6:11/mi
56:43
↑ 67↓ 78
20K· 12.43 mi
6:10/mi
1:15:52
↑ 106↓ 860.1%
Half· 13.11 mi
6:03/mi
1:20:00
↑ 19↓ 370.5%
25K· 15.53 mi
6:10/mi
1:34:57
↑ 66↓ 880.2%
30K· 18.64 mi
6:20/mi
1:54:39
↑ 181↓ 1480.2%
20M
6:21/mi
2:03:17
↑ 64↓ 500.2%
21M
6:50/mi
2:10:07
↑ 106↓ 241.6%
35K· 21.75 mi
6:12/mi
2:14:45
↑ 17↓ 861.7%
23M
6:38/mi
2:23:03
↑ 23↓ 630.6%
24M
6:27/mi
2:29:30
↓ 821.3%
40K· 24.85 mi
6:40/mi
2:35:12
↓ 200.3%
25.2M
7:06/mi
2:37:39
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
2:44:20
↑ 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
Time1:20:00
Pace6:06 /mi
2nd Half
Distance13.11 mi
Time1:24:20
Pace6:26 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5818:376:0018:37
6:00
-
10K
6.21 mi10:37:5137:306:0218:53
6:05
+0:05
15K
9.32 mi10:57:0456:436:0519:13
6:11
+0:06
20K
12.43 mi11:16:131:15:526:0619:09
6:10
-0:01
Half
13.11 mi11:20:211:20:006:064:08
6:03
-0:07
25K
15.53 mi11:35:181:34:576:0714:57
6:10
+0:07
30K
18.64 mi11:55:001:54:396:0919:42
6:20
+0:10
20M
20.00 mi12:03:382:03:176:108:38
6:21
+0:01
21M
21.00 mi12:10:282:10:076:126:50
6:50
+0:29
35K
21.75 mi12:15:062:14:456:124:38
6:12
-0:38
23M
23.00 mi12:23:242:23:036:138:18
6:38
+0:26
24M
24.00 mi12:29:512:29:306:146:27
6:27
-0:11
40K
24.85 mi12:35:332:35:126:155:42
6:40
+0:13
25.2M
25.20 mi12:38:002:37:396:152:27
7:06
+0:26
Finish
26.22 mi12:44:412:44:206:166:41
6:34
-0:32

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

6:00 /mi

Average Pace

6:16 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:03

86% of race

Time at Steady Pace

20:50

13% of race

Time at Slower Pace

2:27

1% of race

Average Pace: 6:16 /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 mi10:18:5818:376:0018:37
6:00
#676
10K
6.21 mi10:37:5137:306:0218:53
6:05
#804
15K
9.32 mi10:57:0456:436:0519:13
6:11
#916
20K
12.43 mi11:16:131:15:526:0619:09
6:10
#928
Half
13.11 mi11:20:211:20:006:064:08
6:03
#923
25K
15.53 mi11:35:181:34:576:0714:57
6:10
#904
30K
18.64 mi11:55:001:54:396:0919:42
6:20
#896
20M
20.00 mi12:03:382:03:176:108:38
6:21
#893
21M
21.00 mi12:10:282:10:076:126:50
6:50
#904
35K
21.75 mi12:15:062:14:456:124:38
6:12
#902
23M
23.00 mi12:23:242:23:036:138:18
6:38
#927
24M
24.00 mi12:29:512:29:306:146:27
6:27
#938
40K
24.85 mi12:35:332:35:126:155:42
6:40
#958
25.2M
25.20 mi12:38:002:37:396:152:27
7:06
#965
Finish
26.22 mi12:44:412:44:206:166:41
6:34
#1002
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6766326321193(Top 4%)1137(Top 7%)1137(Top 22%)
10K6.21 mi3.10 mi804-128759-127759-1271000(Top 4%)950(Top 6%)950(Top 18%)
15K9.32 mi3.11 mi916-112866-107866-1071193(Top 4%)1137(Top 7%)1137(Top 22%)
20K12.43 mi3.11 mi928-12879-13879-13953(Top 4%)905(Top 6%)905(Top 17%)
Half13.11 mi0.68 mi923+5874+5874+5920(Top 3%)877(Top 6%)877(Top 17%)
25K15.53 mi2.42 mi904+19856+18856+18910(Top 3%)863(Top 6%)863(Top 16%)
30K18.64 mi3.11 mi896+8848+8848+81036(Top 4%)985(Top 6%)985(Top 19%)
20M20.00 mi1.36 mi893+3846+2846+21002(Top 4%)958(Top 6%)958(Top 18%)
21M21.00 mi1.00 mi904-11857-11857-111491(Top 6%)1420(Top 9%)1420(Top 27%)
35K21.75 mi0.75 mi902+2855+2855+21206(Top 5%)1149(Top 8%)1149(Top 22%)
23M23.00 mi1.25 mi927-25880-25880-251867(Top 7%)1769(Top 12%)1769(Top 33%)
24M24.00 mi1.00 mi938-11891-11891-111863(Top 7%)1749(Top 12%)1749(Top 33%)
40K24.85 mi0.85 mi958-20910-19910-192159(Top 8%)2010(Top 13%)2010(Top 38%)
25.2M25.20 mi0.35 mi965-7916-6916-62058(Top 8%)1914(Top 13%)1914(Top 36%)
Finish26.22 mi1.02 mi1002-37953-37953-372728(Top 10%)2486(Top 16%)2486(Top 47%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21story building
+97ft-345ft

Overall

1193

Males

1137

M18-39

1137

5K→10K

3.1 - 6.2 mi

Top 4%
×5story building
+79ft-138ft

Overall

1000

Males

950

M18-39

950

10K→15K

6.2 - 9.3 mi

Top 4%
×3story building
+67ft-78ft

Overall

1193

Males

1137

M18-39

1137

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

953

Males

905

M18-39

905

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

920

Males

877

M18-39

877

Half→25K

13.1 - 15.5 mi

Top 3%
×4story building
+66ft-88ft

Overall

910

Males

863

M18-39

863

25K→30K

15.5 - 18.6 mi

Top 4%
×9story building
+181ft-148ft

Overall

1036

Males

985

M18-39

985

30K→20M

18.6 - 20.0 mi

Top 4%
×5story building
+64ft-50ft

Overall

1002

Males

958

M18-39

958

20M→21M

20.0 - 21.0 mi

Top 6%
×8story building
+106ft-24ft

Overall

1491

Males

1420

M18-39

1420

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1206

Males

1149

M18-39

1149

35K→23M

21.8 - 23.0 mi

Top 7%
×5story building
+23ft-63ft

Overall

1867

Males

1769

M18-39

1769

23M→24M

23.0 - 24.0 mi

Top 7%
×6story building
+12ft-82ft

Overall

1863

Males

1749

M18-39

1749

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2159

Males

2010

M18-39

2010

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2058

Males

1914

M18-39

1914

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2728

Males

2486

M18-39

2486

Passing Analysis

Category:
Athletes Passed
180
Passed By
506
Net Change
-326
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#676
5K → 10K4132-128#676#804
10K → 15K3115-112#804#916
15K → 20K2941-12#916#928
20K → Half61+5#928#923
Half → 25K3617+19#923#904
25K → 30K3224+8#904#896
30K → 20M1512+3#896#893
20M → 21M1021-11#893#904
21M → 35K1210+2#904#902
35K → 23M732-25#902#927
23M → 24M819-11#927#938
24M → 40K828-20#938#958
40K → 25.2M411-7#958#965
25.2M → Finish643-37#965#1002
TOTALS180506-326
📊

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