Boston Marathon logo
BOSTON MARATHON 2025

Spencer Lindsay

Bib: 27852•M

DC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
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
24:16
Rank: #14891
Start → 5K
7:49/mi
24:16 split
10K· 6.21 mi
48:01
Rank: #14124 (+767)
5K → 10K
7:39/mi
23:45 split
15K· 9.32 mi
1:12:11
Rank: #14146 (-22)
10K → 15K
7:47/mi
24:10 split
20K· 12.43 mi
1:36:36
Rank: #14024 (+122)
15K → 20K
7:52/mi
24:25 split
Half· 13.11 mi
1:41:58
Rank: #14058 (-34)
20K → Half
7:52/mi
5:22 split
25K· 15.53 mi
2:01:30
Rank: #14059 (-1)
Half → 25K
8:03/mi
19:32 split
30K· 18.64 mi
2:27:27
Rank: #13960 (+99)
25K → 30K
8:21/mi
25:57 split
20M
2:39:26
Rank: #14084 (-124)
30K → 20M
8:49/mi
11:59 split
21M
2:49:11
Rank: #14322 (-238)
20M → 21M
9:45/mi
9:45 split
35K· 21.75 mi
2:55:34
Rank: #14384 (-62)
21M → 35K
8:32/mi
6:23 split
23M
3:06:36
Rank: #14417 (-33)
35K → 23M
8:49/mi
11:02 split
24M
3:16:27
Rank: #14783 (-366)
23M → 24M
9:51/mi
9:51 split
40K· 24.85 mi
3:23:49
Rank: #14746 (+37)
24M → 40K
8:37/mi
7:22 split
25.2M
3:27:11
Rank: #14757 (-11)
40K → 25.2M
9:46/mi
3:22 split
Finish· 26.22 mi
3:35:06
Rank: #14592 (+165)
25.2M → Finish
7:46/mi
7:55 split

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
Time1:41:58
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:53:08
Pace8:38 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:3724:167:4924:16
7:49
-
10K
6.21 mi12:05:2248:017:4423:45
7:39
-0:10
15K
9.32 mi12:29:321:12:117:4524:10
7:47
+0:08
20K
12.43 mi12:53:571:36:367:4624:25
7:52
+0:05
Half
13.11 mi12:59:191:41:587:475:22
7:52
0:00
25K
15.53 mi13:18:512:01:307:4919:32
8:03
+0:11
30K
18.64 mi13:44:482:27:277:5525:57
8:21
+0:18
20M
20.00 mi13:56:472:39:267:5811:59
8:49
+0:28
21M
21.00 mi14:06:322:49:118:039:45
9:45
+0:56
35K
21.75 mi14:12:552:55:348:046:23
8:32
-1:13
23M
23.00 mi14:23:573:06:368:0711:02
8:49
+0:17
24M
24.00 mi14:33:483:16:278:119:51
9:51
+1:02
40K
24.85 mi14:41:103:23:498:127:22
8:37
-1:14
25.2M
25.20 mi14:44:323:27:118:133:22
9:46
+1:09
Finish
26.22 mi14:52:273:35:068:137:55
7:46
-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

7:39 /mi

Average Pace

8:13 /mi

Slowest Pace

9:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:53

51% of race

Time at Steady Pace

59:14

28% of race

Time at Slower Pace

45:59

21% of race

Average Pace: 8:12 /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 mi11:41:3724:167:4924:16
7:49
#14891
10K
6.21 mi12:05:2248:017:4423:45
7:39
#14124
15K
9.32 mi12:29:321:12:117:4524:10
7:47
#14146
20K
12.43 mi12:53:571:36:367:4624:25
7:52
#14024
Half
13.11 mi12:59:191:41:587:475:22
7:52
#14058
25K
15.53 mi13:18:512:01:307:4919:32
8:03
#14059
30K
18.64 mi13:44:482:27:277:5525:57
8:21
#13960
20M
20.00 mi13:56:472:39:267:5811:59
8:49
#14084
21M
21.00 mi14:06:322:49:118:039:45
9:45
#14322
35K
21.75 mi14:12:552:55:348:046:23
8:32
#14384
23M
23.00 mi14:23:573:06:368:0711:02
8:49
#14417
24M
24.00 mi14:33:483:16:278:119:51
9:51
#14783
40K
24.85 mi14:41:103:23:498:127:22
8:37
#14746
25.2M
25.20 mi14:44:323:27:118:133:22
9:46
#14757
Finish
26.22 mi14:52:273:35:068:137:55
7:46
#14592
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14891103891038914172(Top 50%)10010(Top 62%)10010(Top 177%)
10K6.21 mi3.10 mi14124+76710073+31610073+31613401(Top 47%)9756(Top 61%)9756(Top 173%)
15K9.32 mi3.11 mi14146-2210047+2610047+2614172(Top 50%)10010(Top 62%)10010(Top 177%)
20K12.43 mi3.11 mi14024+1229969+789969+7813752(Top 48%)9760(Top 61%)9760(Top 173%)
Half13.11 mi0.68 mi14058-349977-89977-814760(Top 52%)10235(Top 64%)10235(Top 181%)
25K15.53 mi2.42 mi14059-19937+409937+4014311(Top 50%)9897(Top 61%)9897(Top 175%)
30K18.64 mi3.11 mi13960+999839+989839+9813834(Top 49%)9525(Top 59%)9525(Top 169%)
20M20.00 mi1.36 mi14084-1249856-179856-1715748(Top 55%)10254(Top 64%)10254(Top 182%)
21M21.00 mi1.00 mi14322-2389946-909946-9017231(Top 61%)10790(Top 67%)10790(Top 191%)
35K21.75 mi0.75 mi14384-629956-109956-1015634(Top 55%)10002(Top 62%)10002(Top 177%)
23M23.00 mi1.25 mi14417-339929+279929+2715167(Top 53%)9702(Top 60%)9702(Top 172%)
24M24.00 mi1.00 mi14783-36610060-13110060-13120878(Top 74%)12280(Top 76%)12280(Top 218%)
40K24.85 mi0.85 mi14746+3710012+4810012+4814133(Top 50%)9060(Top 56%)9060(Top 161%)
25.2M25.20 mi0.35 mi14757-1110014-210014-215859(Top 56%)9796(Top 61%)9796(Top 174%)
Finish26.22 mi1.02 mi14592+1659905+1099905+10911211(Top 39%)7629(Top 47%)7629(Top 135%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14172

Males

10010

M18-39

10010

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13401

Males

9756

M18-39

9756

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14172

Males

10010

M18-39

10010

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13752

Males

9760

M18-39

9760

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14760

Males

10235

M18-39

10235

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14311

Males

9897

M18-39

9897

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13834

Males

9525

M18-39

9525

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15748

Males

10254

M18-39

10254

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17231

Males

10790

M18-39

10790

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15634

Males

10002

M18-39

10002

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

15167

Males

9702

M18-39

9702

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

20878

Males

12280

M18-39

12280

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14133

Males

9060

M18-39

9060

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15859

Males

9796

M18-39

9796

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

11211

Males

7629

M18-39

7629

Passing Analysis

Category:
Athletes Passed
2378
Passed By
2079
Net Change
+299
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14891
5K → 10K82558+767#14891#14124
10K → 15K193215-22#14124#14146
15K → 20K272150+122#14146#14024
20K → Half2256-34#14024#14058
Half → 25K172173-1#14058#14059
25K → 30K295196+99#14059#13960
30K → 20M89213-124#13960#14084
20M → 21M59297-238#14084#14322
21M → 35K46108-62#14322#14384
35K → 23M100133-33#14384#14417
23M → 24M13379-366#14417#14783
24M → 40K8043+37#14783#14746
40K → 25.2M3445-11#14746#14757
25.2M → Finish17813+165#14757#14592
TOTALS23782079+299
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing