Boston Marathon logo
BOSTON MARATHON 2023

Sage Costen

Bib: 2493•M

NC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 20%
Gender (Male)
#0 / 15176
Top 31%
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
6:39/mi
20:40
↑ 97↓ 3451.5%
10K· 6.21 mi
6:21/mi
40:23
↑ 79↓ 1380.4%
15K· 9.32 mi
6:25/mi
1:00:18
↑ 67↓ 78
20K· 12.43 mi
6:30/mi
1:20:29
↑ 106↓ 860.1%
Half· 13.11 mi
6:28/mi
1:24:54
↑ 19↓ 370.5%
25K· 15.53 mi
6:29/mi
1:40:38
↑ 66↓ 880.2%
30K· 18.64 mi
6:40/mi
2:01:22
↑ 181↓ 1480.2%
20M
7:07/mi
2:11:02
↑ 64↓ 500.2%
21M
8:00/mi
2:19:02
↑ 106↓ 241.6%
35K· 21.75 mi
7:41/mi
2:24:47
↑ 17↓ 861.7%
23M
9:15/mi
2:36:22
↑ 23↓ 630.6%
24M
8:16/mi
2:44:38
↓ 821.3%
40K· 24.85 mi
9:27/mi
2:52:43
↓ 200.3%
25.2M
9:49/mi
2:56:06
↑ 13↓ 160.2%
Finish· 26.22 mi
8:29/mi
3:04:45
↑ 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
Time1:24:54
Pace6:29 /mi
2nd Half
Distance13.11 mi
Time1:39:51
Pace7:37 /mi
📊Positive Split: 17.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2720:406:3920:40
6:39
-
10K
6.21 mi10:42:1040:236:3019:43
6:21
-0:18
15K
9.32 mi11:02:051:00:186:2819:55
6:25
+0:04
20K
12.43 mi11:22:161:20:296:2920:11
6:30
+0:05
Half
13.11 mi11:26:411:24:546:294:25
6:28
-0:02
25K
15.53 mi11:42:251:40:386:2915:44
6:29
+0:01
30K
18.64 mi12:03:092:01:226:3120:44
6:40
+0:11
20M
20.00 mi12:12:492:11:026:339:40
7:07
+0:27
21M
21.00 mi12:20:492:19:026:378:00
8:00
+0:53
35K
21.75 mi12:26:342:24:476:395:45
7:41
-0:19
23M
23.00 mi12:38:092:36:226:4811:35
9:15
+1:34
24M
24.00 mi12:46:252:44:386:528:16
8:16
-0:59
40K
24.85 mi12:54:302:52:436:578:05
9:27
+1:11
25.2M
25.20 mi12:57:532:56:066:593:23
9:49
+0:22
Finish
26.22 mi13:06:323:04:457:038:39
8:29
-1:20

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

6:21 /mi

Average Pace

7:03 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:58

43% of race

Time at Steady Pace

56:49

31% of race

Time at Slower Pace

47:58

26% of race

Average Pace: 7:03 /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 mi10:22:2720:406:3920:40
6:39
#3261
10K
6.21 mi10:42:1040:236:3019:43
6:21
#2494
15K
9.32 mi11:02:051:00:186:2819:55
6:25
#2384
20K
12.43 mi11:22:161:20:296:2920:11
6:30
#2333
Half
13.11 mi11:26:411:24:546:294:25
6:28
#2339
25K
15.53 mi11:42:251:40:386:2915:44
6:29
#2300
30K
18.64 mi12:03:092:01:226:3120:44
6:40
#2286
20M
20.00 mi12:12:492:11:026:339:40
7:07
#2392
21M
21.00 mi12:20:492:19:026:378:00
8:00
#2578
35K
21.75 mi12:26:342:24:476:395:45
7:41
#2791
23M
23.00 mi12:38:092:36:226:4811:35
9:15
#3743
24M
24.00 mi12:46:252:44:386:528:16
8:16
#4277
40K
24.85 mi12:54:302:52:436:578:05
9:27
#4764
25.2M
25.20 mi12:57:532:56:066:593:23
9:49
#4933
Finish
26.22 mi13:06:323:04:457:038:39
8:29
#5202
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3261308030802170(Top 8%)2083(Top 14%)2083(Top 39%)
10K6.21 mi3.10 mi2494+7672379+7012379+7011974(Top 7%)1891(Top 12%)1891(Top 36%)
15K9.32 mi3.11 mi2384+1102282+972282+972170(Top 8%)2083(Top 14%)2083(Top 39%)
20K12.43 mi3.11 mi2333+512237+452237+452275(Top 9%)2180(Top 14%)2180(Top 41%)
Half13.11 mi0.68 mi2339-62243-62243-62693(Top 10%)2587(Top 17%)2587(Top 49%)
25K15.53 mi2.42 mi2300+392205+382205+382134(Top 8%)2047(Top 13%)2047(Top 39%)
30K18.64 mi3.11 mi2286+142194+112194+112290(Top 9%)2184(Top 14%)2184(Top 41%)
20M20.00 mi1.36 mi2392-1062291-972291-974685(Top 18%)4290(Top 28%)4290(Top 81%)
21M21.00 mi1.00 mi2578-1862466-1752466-1757307(Top 27%)6052(Top 40%)6052(Top 115%)
35K21.75 mi0.75 mi2791-2132668-2022668-2029778(Top 37%)7491(Top 49%)7491(Top 142%)
23M23.00 mi1.25 mi3743-9523527-8593527-85917275(Top 65%)10804(Top 71%)10804(Top 204%)
24M24.00 mi1.00 mi4277-5344002-4754002-47513001(Top 49%)8836(Top 58%)8836(Top 167%)
40K24.85 mi0.85 mi4764-4874414-4124414-41218148(Top 68%)11094(Top 73%)11094(Top 210%)
25.2M25.20 mi0.35 mi4933-1694542-1284542-12816476(Top 62%)10288(Top 68%)10288(Top 195%)
Finish26.22 mi1.02 mi5202-2694760-2184760-21815305(Top 57%)9846(Top 65%)9846(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21story building
+97ft-345ft

Overall

2170

Males

2083

M18-39

2083

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

1974

Males

1891

M18-39

1891

10K→15K

6.2 - 9.3 mi

Top 8%
×3story building
+67ft-78ft

Overall

2170

Males

2083

M18-39

2083

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2275

Males

2180

M18-39

2180

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2693

Males

2587

M18-39

2587

Half→25K

13.1 - 15.5 mi

Top 8%
×4story building
+66ft-88ft

Overall

2134

Males

2047

M18-39

2047

25K→30K

15.5 - 18.6 mi

Top 9%
×9story building
+181ft-148ft

Overall

2290

Males

2184

M18-39

2184

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

4685

Males

4290

M18-39

4290

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7307

Males

6052

M18-39

6052

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9778

Males

7491

M18-39

7491

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

17275

Males

10804

M18-39

10804

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13001

Males

8836

M18-39

8836

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18148

Males

11094

M18-39

11094

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16476

Males

10288

M18-39

10288

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15305

Males

9846

M18-39

9846

Passing Analysis

Category:
Athletes Passed
1200
Passed By
3141
Net Change
-1941
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3261
5K → 10K7714+767#3261#2494
10K → 15K14030+110#2494#2384
15K → 20K8837+51#2384#2333
20K → Half713-6#2333#2339
Half → 25K7536+39#2339#2300
25K → 30K7056+14#2300#2286
30K → 20M16122-106#2286#2392
20M → 21M7193-186#2392#2578
21M → 35K3216-213#2578#2791
35K → 23M2954-952#2791#3743
23M → 24M7541-534#3743#4277
24M → 40K6493-487#4277#4764
40K → 25.2M0169-169#4764#4933
25.2M → Finish8277-269#4933#5202
TOTALS12003141-1941
📊

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