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BOSTON MARATHON 2025

Chase Smith

Bib: 3347•M

CT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 26%
Gender (Male)
#0 / 16105
Top 39%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:56
Rank: #11127
Start → 5K
22:56 | 7:23/mi
10K· 6.21 mi
46:02
Rank: #11299 (-172)
5K → 10K
23:06 | 7:26/mi
15K· 9.32 mi
1:09:12
Rank: #11284 (+15)
10K → 15K
23:10 | 7:27/mi
20K· 12.43 mi
1:31:52
Rank: #10683 (+601)
15K → 20K
22:40 | 7:18/mi
Half· 13.11 mi
1:36:45
Rank: #10574 (+109)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:54:26
Rank: #10145 (+429)
Half → 25K
17:41 | 7:18/mi
30K· 18.64 mi
2:17:27
Rank: #9469 (+676)
25K → 30K
23:01 | 7:25/mi
20M
2:27:21
Rank: #9126 (+343)
30K → 20M
9:54 | 7:17/mi
21M
2:34:58
Rank: #8794 (+332)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:40:10
Rank: #8601 (+193)
21M → 35K
5:12 | 6:57/mi
23M
2:49:09
Rank: #8255 (+346)
35K → 23M
8:59 | 7:10/mi
24M
2:56:11
Rank: #8027 (+228)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
3:02:09
Rank: #7799 (+228)
24M → 40K
5:58 | 6:59/mi
25.2M
3:04:42
Rank: #7679 (+120)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
3:11:04
Rank: #7348 (+331)
25.2M → Finish
6:22 | 6:15/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:36:45
Pace7:23 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:34:19
Pace7:12 /mi
📊Negative Split: 2.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5922:567:2322:56
7:23
-
10K
6.21 mi10:47:0546:027:2523:06
7:26
+0:03
15K
9.32 mi11:10:151:09:127:2523:10
7:27
+0:01
20K
12.43 mi11:32:551:31:527:2422:40
7:18
-0:09
Half
13.11 mi11:37:481:36:457:234:53
7:09
-0:09
25K
15.53 mi11:55:291:54:267:2217:41
7:18
+0:09
30K
18.64 mi12:18:302:17:277:2223:01
7:25
+0:07
20M
20.00 mi12:28:242:27:217:229:54
7:17
-0:08
21M
21.00 mi12:36:012:34:587:237:37
7:37
+0:20
35K
21.75 mi12:41:132:40:107:225:12
6:57
-0:40
23M
23.00 mi12:50:122:49:097:218:59
7:10
+0:13
24M
24.00 mi12:57:142:56:117:207:02
7:02
-0:08
40K
24.85 mi13:03:123:02:097:205:58
6:59
-0:03
25.2M
25.20 mi13:05:453:04:427:202:33
7:24
+0:25
Finish
26.22 mi13:12:073:11:047:186:22
6:15
-1:09

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

6:15 /mi

Average Pace

7:18 /mi

Slowest Pace

7:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:34

13% of race

Time at Steady Pace

2:38:53

83% of race

Time at Slower Pace

7:37

4% of race

Average Pace: 7:17 /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 mi10:23:5922:567:2322:56
7:23
#11127
10K
6.21 mi10:47:0546:027:2523:06
7:26
#11299
15K
9.32 mi11:10:151:09:127:2523:10
7:27
#11284
20K
12.43 mi11:32:551:31:527:2422:40
7:18
#10683
Half
13.11 mi11:37:481:36:457:234:53
7:09
#10574
25K
15.53 mi11:55:291:54:267:2217:41
7:18
#10145
30K
18.64 mi12:18:302:17:277:2223:01
7:25
#9469
20M
20.00 mi12:28:242:27:217:229:54
7:17
#9126
21M
21.00 mi12:36:012:34:587:237:37
7:37
#8794
35K
21.75 mi12:41:132:40:107:225:12
6:57
#8601
23M
23.00 mi12:50:122:49:097:218:59
7:10
#8255
24M
24.00 mi12:57:142:56:117:207:02
7:02
#8027
40K
24.85 mi13:03:123:02:097:205:58
6:59
#7799
25.2M
25.20 mi13:05:453:04:427:202:33
7:24
#7679
Finish
26.22 mi13:12:073:11:047:186:22
6:15
#7348
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi111278755875511367(Top 40%)8766(Top 54%)8766(Top 155%)
10K6.21 mi3.10 mi11299-1728819-648819-6411485(Top 40%)8889(Top 55%)8889(Top 158%)
15K9.32 mi3.11 mi11284+158783+368783+3611367(Top 40%)8766(Top 54%)8766(Top 155%)
20K12.43 mi3.11 mi10683+6018465+3188465+3189006(Top 32%)7449(Top 46%)7449(Top 132%)
Half13.11 mi0.68 mi10574+1098409+568409+568653(Top 30%)7265(Top 45%)7265(Top 129%)
25K15.53 mi2.42 mi10145+4298138+2718138+2718295(Top 29%)6930(Top 43%)6930(Top 123%)
30K18.64 mi3.11 mi9469+6767732+4067732+4067091(Top 25%)6027(Top 37%)6027(Top 107%)
20M20.00 mi1.36 mi9126+3437510+2227510+2225679(Top 20%)4959(Top 31%)4959(Top 88%)
21M21.00 mi1.00 mi8794+3327285+2257285+2255210(Top 18%)4531(Top 28%)4531(Top 80%)
35K21.75 mi0.75 mi8601+1937154+1317154+1315047(Top 18%)4414(Top 27%)4414(Top 78%)
23M23.00 mi1.25 mi8255+3466904+2506904+2504718(Top 17%)4115(Top 26%)4115(Top 73%)
24M24.00 mi1.00 mi8027+2286715+1896715+1894816(Top 17%)4130(Top 26%)4130(Top 73%)
40K24.85 mi0.85 mi7799+2286546+1696546+1693761(Top 13%)3306(Top 21%)3306(Top 59%)
25.2M25.20 mi0.35 mi7679+1206450+966450+962930(Top 10%)2609(Top 16%)2609(Top 46%)
Finish26.22 mi1.02 mi7348+3316220+2306220+2301696(Top 6%)1572(Top 10%)1572(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11367

Males

8766

M18-39

8766

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

11485

Males

8889

M18-39

8889

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11367

Males

8766

M18-39

8766

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

9006

Males

7449

M18-39

7449

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8653

Males

7265

M18-39

7265

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8295

Males

6930

M18-39

6930

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

7091

Males

6027

M18-39

6027

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5679

Males

4959

M18-39

4959

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5210

Males

4531

M18-39

4531

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5047

Males

4414

M18-39

4414

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4718

Males

4115

M18-39

4115

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4816

Males

4130

M18-39

4130

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3761

Males

3306

M18-39

3306

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2930

Males

2609

M18-39

2609

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1696

Males

1572

M18-39

1572

Passing Analysis

Category:
Athletes Passed
4332*
Passed By
553
Net Change
+3779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11127
5K → 10K172344-172#11127#11299
10K → 15K192177+15#11299#11284
15K → 20K6076+601#11284#10683
20K → Half1101+109#10683#10574
Half → 25K43910+429#10574#10145
25K → 30K680*4+676#10145#9469
30K → 20M3474+343#9469#9126
20M → 21M3320+332#9126#8794
21M → 35K1930+193#8794#8601
35K → 23M3482+346#8601#8255
23M → 24M2302+228#8255#8027
24M → 40K2291+228#8027#7799
40K → 25.2M1222+120#7799#7679
25.2M → Finish3310+331#7679#7348
TOTALS4332*553+3779

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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