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BOSTON MARATHON 2023

Devon Choi

MA

Bib: 25956 M

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:56/mi
21:34
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:54/mi
43:01
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:09/mi
1:05:13
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:35/mi
1:28:48
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:43/mi
1:34:04
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:24/mi
1:54:27
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
11:18/mi
2:29:32
↑ 181↓ 1480.2%
138 ft elev
20M
10:03/mi
2:43:12
↑ 64↓ 500.2%
148 ft elev
21M
11:02/mi
2:54:14
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:34/mi
3:02:53
↑ 17↓ 861.7%
156 ft elev
23M
12:13/mi
3:18:11
↑ 23↓ 630.6%
116 ft elev
24M
10:21/mi
3:28:32
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:54/mi
3:36:09
↓ 200.3%
20 ft elev
25.2M
8:54/mi
3:39:13
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:17/mi
3:47:39
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:34:047:11 /mi⚡ faster
2nd Half
2:13:3510:11 /mi+42.0%
Positive split — 42.0% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:36:4821:346:5621:34
6:56
-
10K
6.21 mi11:58:1543:016:5521:27
6:54
-0:02
15K
9.32 mi12:20:271:05:137:0022:12
7:09
+0:15
20K
12.43 mi12:44:021:28:487:0923:35
7:35
+0:26
Half
13.11 mi12:49:181:34:047:115:16
7:43
+0:08
25K
15.53 mi13:09:411:54:277:2220:23
8:24
+0:41
30K
18.64 mi13:44:462:29:328:0135:05
11:18
+2:54
20M
20.00 mi13:58:262:43:128:1013:40
10:03
-1:15
21M
21.00 mi14:09:282:54:148:1811:02
11:02
+0:59
35K
21.75 mi14:18:073:02:538:258:39
11:34
+0:32
23M
23.00 mi14:33:253:18:118:3715:18
12:13
+0:39
24M
24.00 mi14:43:463:28:328:4110:21
10:21
-1:52
40K
24.85 mi14:51:233:36:098:427:37
8:54
-1:27
25.2M
25.20 mi14:54:273:39:138:423:04
8:54
0:00
Finish
26.22 mi15:02:533:47:398:418:26
8:17
-0:37

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

6:54 /mi

Average Pace

8:41 /mi

Slowest Pace

12:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:34:04

41% of race

Time at Steady Pace

39:30

17% of race

Time at Slower Pace

1:34:05

41% of race

Average Pace: 8:41 /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 mi11:36:4821:346:5621:34
6:56
#5888
10K
6.21 mi11:58:1543:016:5521:27
6:54
#6008
15K
9.32 mi12:20:271:05:137:0022:12
7:09
#6501
20K
12.43 mi12:44:021:28:487:0923:35
7:35
#7197
Half
13.11 mi12:49:181:34:047:115:16
7:43
#7380
25K
15.53 mi13:09:411:54:277:2220:23
8:24
#8577
30K
18.64 mi13:44:462:29:328:0135:05
11:18
#13454
20M
20.00 mi13:58:262:43:128:1013:40
10:03
#14284
21M
21.00 mi14:09:282:54:148:1811:02
11:02
#14871
35K
21.75 mi14:18:073:02:538:258:39
11:34
#15562
23M
23.00 mi14:33:253:18:118:3715:18
12:13
#16674
24M
24.00 mi14:43:463:28:328:4110:21
10:21
#17028
40K
24.85 mi14:51:233:36:098:427:37
8:54
#16967
25.2M
25.20 mi14:54:273:39:138:423:04
8:54
#16898
Finish
26.22 mi15:02:533:47:398:418:26
8:17
#16786
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi588854005400744965666566
10K6.21 mi3.10 mi6008-1205495-955495-95617055965596
15K9.32 mi3.11 mi6501-4935871-3765871-376744965666566
20K12.43 mi3.11 mi7197-6966390-5196390-5191002180898089
Half13.11 mi0.68 mi7380-1836523-1336523-1331202691039103
25K15.53 mi2.42 mi8577-11977278-7557278-755156191038810388
30K18.64 mi3.11 mi13454-48779624-23469624-2346235651377613776
20M20.00 mi1.36 mi14284-8309917-2939917-293206291240012400
21M21.00 mi1.00 mi14871-58710138-22110138-221208851246412464
35K21.75 mi0.75 mi15562-69110368-23010368-230241741393313933
23M23.00 mi1.25 mi16674-111210818-45010818-450242631396913969
24M24.00 mi1.00 mi17028-35410945-12710945-127216511270712707
40K24.85 mi0.85 mi16967+6110902+4310902+431565399799979
25.2M25.20 mi0.35 mi16898+6910863+3910863+391189282358235
Finish26.22 mi1.02 mi16786+11210813+5010813+501394092279227

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7449

Males

6566

M18-39

6566

5K→10K

3.1 - 6.2 mi

Top 23%
×5story building
+79ft-138ft

Overall

6170

Males

5596

M18-39

5596

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7449

Males

6566

M18-39

6566

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10021

Males

8089

M18-39

8089

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12026

Males

9103

M18-39

9103

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15619

Males

10388

M18-39

10388

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

23565

Males

13776

M18-39

13776

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20629

Males

12400

M18-39

12400

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20885

Males

12464

M18-39

12464

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

24174

Males

13933

M18-39

13933

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24263

Males

13969

M18-39

13969

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21651

Males

12707

M18-39

12707

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15653

Males

9979

M18-39

9979

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11892

Males

8235

M18-39

8235

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13940

Males

9227

M18-39

9227

Passing Analysis

Category:
Athletes Passed
492
Passed By
11388
Net Change
-10898
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5888
5K → 10K139259-120#5888#6008
10K → 15K17510-493#6008#6501
15K → 20K14710-696#6501#7197
20K → Half1184-183#7197#7380
Half → 25K51202-1197#7380#8577
25K → 30K14876-4877#8577#13454
30K → 20M7837-830#13454#14284
20M → 21M7594-587#14284#14871
21M → 35K1692-691#14871#15562
35K → 23M31115-1112#15562#16674
23M → 24M9363-354#16674#17028
24M → 40K8524+61#17028#16967
40K → 25.2M723+69#16967#16898
25.2M → Finish13119+112#16898#16786
TOTALS49211388-10898

Passing Charts

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