Boston Marathon logo
BOSTON MARATHON 2025

Christopher Massero

Bib: 27390•M

MA

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

⏱️ 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
7:10/mi
22:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:08/mi
44:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:18/mi
1:07:07
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:30:30
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:35:42
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
1:54:39
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:20:41
↑ 181↓ 1480.2%
20M
9:53/mi
2:34:07
↑ 64↓ 500.2%
21M
10:44/mi
2:44:51
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
2:51:22
↑ 17↓ 861.7%
23M
10:25/mi
3:04:24
↑ 23↓ 630.6%
24M
8:31/mi
3:12:55
↓ 821.3%
40K· 24.85 mi
9:26/mi
3:20:59
↓ 200.3%
25.2M
9:52/mi
3:24:23
↑ 13↓ 160.2%
Finish· 26.22 mi
8:54/mi
3:33:27
↑ 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
Time1:35:42
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:57:45
Pace8:59 /mi
📊Positive Split: 23.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:37:5522:157:1022:15
7:10
-
10K
6.21 mi12:00:0644:267:0922:11
7:08
-0:02
15K
9.32 mi12:22:471:07:077:1222:41
7:18
+0:10
20K
12.43 mi12:46:101:30:307:1723:23
7:32
+0:14
Half
13.11 mi12:51:221:35:427:185:12
7:37
+0:05
25K
15.53 mi13:10:191:54:397:2318:57
7:49
+0:12
30K
18.64 mi13:36:212:20:417:3326:02
8:23
+0:34
20M
20.00 mi13:49:472:34:077:4213:26
9:53
+1:30
21M
21.00 mi14:00:312:44:517:5110:44
10:44
+0:51
35K
21.75 mi14:07:022:51:227:536:31
8:43
-2:01
23M
23.00 mi14:20:043:04:248:0113:02
10:25
+1:42
24M
24.00 mi14:28:353:12:558:028:31
8:31
-1:54
40K
24.85 mi14:36:393:20:598:058:04
9:26
+0:55
25.2M
25.20 mi14:40:033:24:238:073:24
9:52
+0:26
Finish
26.22 mi14:49:073:33:278:099:04
8:54
-0:58

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

7:08 /mi

Average Pace

8:09 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:39

54% of race

Time at Steady Pace

50:08

23% of race

Time at Slower Pace

48:40

23% of race

Average Pace: 8:08 /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 mi11:37:5522:157:1022:15
7:10
#9147
10K
6.21 mi12:00:0644:267:0922:11
7:08
#9039
15K
9.32 mi12:22:471:07:077:1222:41
7:18
#9350
20K
12.43 mi12:46:101:30:307:1723:23
7:32
#9711
Half
13.11 mi12:51:221:35:427:185:12
7:37
#9876
25K
15.53 mi13:10:191:54:397:2318:57
7:49
#10279
30K
18.64 mi13:36:212:20:417:3326:02
8:23
#11001
20M
20.00 mi13:49:472:34:077:4213:26
9:53
#11963
21M
21.00 mi14:00:312:44:517:5110:44
10:44
#12692
35K
21.75 mi14:07:022:51:227:536:31
8:43
#12869
23M
23.00 mi14:20:043:04:248:0113:02
10:25
#13645
24M
24.00 mi14:28:353:12:558:028:31
8:31
#13707
40K
24.85 mi14:36:393:20:598:058:04
9:26
#13935
25.2M
25.20 mi14:40:033:24:238:073:24
9:52
#13977
Finish
26.22 mi14:49:073:33:278:099:04
8:54
#14155
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi91477699769910001(Top 35%)8086(Top 50%)8086(Top 143%)
10K6.21 mi3.10 mi9039+1087628+717628+719002(Top 32%)7608(Top 47%)7608(Top 135%)
15K9.32 mi3.11 mi9350-3117788-1607788-16010001(Top 35%)8086(Top 50%)8086(Top 143%)
20K12.43 mi3.11 mi9711-3617947-1597947-15910990(Top 39%)8494(Top 53%)8494(Top 151%)
Half13.11 mi0.68 mi9876-1658041-948041-9412734(Top 45%)9357(Top 58%)9357(Top 166%)
25K15.53 mi2.42 mi10279-4038214-1738214-17312479(Top 44%)9068(Top 56%)9068(Top 161%)
30K18.64 mi3.11 mi11001-7228502-2888502-28814009(Top 49%)9599(Top 60%)9599(Top 170%)
20M20.00 mi1.36 mi11963-9628921-4198921-41920552(Top 72%)12382(Top 77%)12382(Top 219%)
21M21.00 mi1.00 mi12692-7299216-2959216-29520670(Top 73%)12332(Top 77%)12332(Top 219%)
35K21.75 mi0.75 mi12869-1779281-659281-6516702(Top 59%)10476(Top 65%)10476(Top 186%)
23M23.00 mi1.25 mi13645-7769572-2919572-29121750(Top 77%)12746(Top 79%)12746(Top 226%)
24M24.00 mi1.00 mi13707-629576-49576-414587(Top 51%)9400(Top 58%)9400(Top 167%)
40K24.85 mi0.85 mi13935-2289636-609636-6018408(Top 65%)11015(Top 68%)11015(Top 195%)
25.2M25.20 mi0.35 mi13977-429658-229658-2216317(Top 57%)10027(Top 62%)10027(Top 178%)
Finish26.22 mi1.02 mi14155-1789714-569714-5618494(Top 65%)11112(Top 69%)11112(Top 197%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

10001

Males

8086

M18-39

8086

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

9002

Males

7608

M18-39

7608

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

10001

Males

8086

M18-39

8086

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10990

Males

8494

M18-39

8494

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12734

Males

9357

M18-39

9357

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12479

Males

9068

M18-39

9068

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

14009

Males

9599

M18-39

9599

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

20552

Males

12382

M18-39

12382

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20670

Males

12332

M18-39

12332

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16702

Males

10476

M18-39

10476

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21750

Males

12746

M18-39

12746

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

14587

Males

9400

M18-39

9400

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18408

Males

11015

M18-39

11015

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16317

Males

10027

M18-39

10027

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18494

Males

11112

M18-39

11112

Passing Analysis

Category:
Athletes Passed
834
Passed By
5839
Net Change
-5008
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9147
5K → 10K271163+108#9147#9039
10K → 15K73384-311#9039#9350
15K → 20K100461-361#9350#9711
20K → Half2167-165#9711#9876
Half → 25K74475-403#9876#10279
25K → 30K83804-722#10279#11001
30K → 20M18980-962#11001#11963
20M → 21M11740-729#11963#12692
21M → 35K23200-177#12692#12869
35K → 23M18794-776#12869#13645
23M → 24M65127-62#13645#13707
24M → 40K37265-228#13707#13935
40K → 25.2M2769-42#13935#13977
25.2M → Finish32210-178#13977#14155
TOTALS8345839-5008
📊

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